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LOGO!Soft Comfort User Documentation
Siemens AG 1999
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*HWWLQJ6WDUWHG %ULHI*XLGHWR&UHDWLQJ&RQWURO3URJUDPV 2.1.1 Description of User Interface............................................................................................. 5 2.1.2 Creating Programs ............................................................................................................ 6 2.1.3 Editing the Diagram......................................................................................................... 10 2.1.4 Documenting the Program .............................................................................................. 13 *HWWLQJ6WDUWHG 6LPXODWLQJD&RQWURO3URJUDP 2.2.1 Starting the Simulation .................................................................................................... 14 2.2.2 Simulating the Control Program ...................................................................................... 16 2.2.3 Archiving Programs......................................................................................................... 19
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'HVFULSWLRQRI$YDLODEOH%XWWRQV 3.2.1 Standard Toolbar ............................................................................................................ 21 3.2.2 Tools Toolbar .................................................................................................................. 23 'HVFULSWLRQRI0HQX%DU 3.3.1 File Menu ........................................................................................................................ 26 3.3.2 Edit Menu........................................................................................................................ 31 3.3.3 Format Menu................................................................................................................... 33 3.3.4 View Menu ...................................................................................................................... 34 3.3.5 Tools Menu ..................................................................................................................... 37 3.3.6 Help Menu....................................................................................................................... 44
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&RQVWDQWVDQG7HUPLQDOV &R 4.4.1 Inputs .............................................................................................................................. 50 4.4.2 Inputs for ASi .................................................................................................................. 50 4.4.3 Outputs ........................................................................................................................... 51 4.4.4 Outputs for ASi................................................................................................................ 51 4.4.5 Flags ............................................................................................................................... 52 4.4.6 Fixed Signal Levels ......................................................................................................... 52
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&RQWHQWV %DVLF)XQFWLRQV %) 4.5.1 AND ................................................................................................................................ 53 4.5.2 OR................................................................................................................................... 53 4.5.3 NOT ................................................................................................................................ 54 4.5.4 XOR ................................................................................................................................ 54 4.5.5 NAND.............................................................................................................................. 54 4.5.6 NOR ................................................................................................................................ 55 6SHFLDO)XQFWLRQV 6) 4.6.1 ON Delay ........................................................................................................................ 56 4.6.2 OFF Delay....................................................................................................................... 58 4.6.3 Pulse Relay..................................................................................................................... 60 4.6.4 Time Switch .................................................................................................................... 62 4.6.5 Latching Relay ................................................................................................................ 66 4.6.6 Symmetrical Pulse Generator ......................................................................................... 68 4.6.7 Retentive ON Delay ........................................................................................................ 69 4.6.8 Up/Down Counter............................................................................................................ 71 4.6.9 Hours Counter................................................................................................................. 73 4.6.10 Wiping Relay/Pulse Output ............................................................................................. 76 4.6.11 Frequency Trigger........................................................................................................... 78 4.6.12 Year Clock ...................................................................................................................... 80 4.6.13 Asynchronous Pulse Generator ...................................................................................... 83
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3UDFWLFDO([DPSOH +RXVHKROG:DWHU3XPS 5.1.1 Description of Task ......................................................................................................... 85 5.1.2 Conventional Solution ..................................................................................................... 87 5.1.3 Implementation with LOGO!............................................................................................ 87 5.1.4 Programming .................................................................................................................. 88 5.1.5 Simulation ....................................................................................................................... 93 5.1.6 Documentation ................................................................................................................ 95 5.1.7 Program Transfer ............................................................................................................ 96 ([DPSOH3URJUDPV 5.2.1 Convenience Switch........................................................................................................ 97 5.2.2 Ventilation System .......................................................................................................... 99 5.2.3 Factory Gate ................................................................................................................. 101 5.2.4 Uncoiler......................................................................................................................... 103
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:KDWLV/2*26RIW&RPIRUW" /2*2DQG/2*26RIW 7KHORJLFPRGXOH The Siemens universal logic module LOGO! has been on the market since 1996 and is enjoying growing popularity all over the world. Thanks to the integration of a large number of functions at an exceptionally economical price compared with conventional programmers, the LOGO! is able to provide solutions for a wide variety of household, industrial and engineering tasks. :LGHUDQJHRIDSSOLFDWLRQV The choice of models in the LOGO! range makes it extremely versatile at adapting to a vast range of tasks. Its ASi bus compatibility means that the LOGO! can also provide solutions for small-scale automation tasks. /2*26RIWSURJUDPPLQJVRIWZDUH LOGO!Soft is a program which simulates a configured LOGO! unit on a PC. The programming software enables control programs to be created, tested, edited, archived and printed out on a PC. This offline programming facility considerably improves the user-friendliness of the LOGO!. The user interface provides a graphical representation of the unit being programmed. Once created, programs can be transferred between the PC and the LOGO!.
/2*26RIW&RPIRUW /2*26RIW&RPIRUWSURJUDPPLQJVRIWZDUH LOGO!Soft Comfort makes creating control programs easier, more efficient and more manageable than in the past. The process of creating a program involves positioning and linking up program elements on a "drawing board". One particularly user-friendly feature is the offline program simulation facility which enables simultaneous display of multiple special function statuses and professional documentation of the programs created. :K\GRZHQHHG/2*26RIW&RPIRUW" Certain user groups, among them planning and technical consultants and users with PC/CAD experience, expect the LOGO! to offer a programming interface for their equipment which does not necessarily simulate operation of the unit but chiefly increases the ease of programming and offers good facilities for testing and documentation. LOGO!Soft Comfort provides Windows users with a tool which provides an even more straightforward and convenient facility for producing control programs on a PC and printing out detailed and clearly laid out circuit documentation. 6SHFLDOIHDWXUHVRI/2*26RIW&RPIRUW •
Easy and convenient production of control programs
•
Comprehensive documentation of control programs
•
Comprehensive print functions
•
Simulation
LOGO!Soft Comfort Manual
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7XWRULDO %DVLFUHTXLUHPHQWVIRUZRUNLQJZLWK/2*26RIW&RPIRUW It is assumed that you are familiar with the basics of the Windows operating system and creating function diagrams. In order to be able to transfer programs you will also require the connecting lead for connecting the PC with the LOGO! module via the PC’s serial interface.
*HWWLQJ6WDUWHG %ULHI*XLGHWR&UHDWLQJ&RQWURO3URJUDPV ,QWURGXFWLRQ In order to illustrate the basic functions of LOGO!Soft Comfort, we will demonstrate the creation of a simple control program and then simulate it on the PC. The individual functions are fully and comprehensively explained in the succeeding chapters of this manual. Finally, the last chapter of the manual presents a complete, working example application in LOGO!Soft Comfort. That chapter also deals with the subjects of preparation, transfer and archiving.
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Menu bar Standard toolbar
Tools toolbar
Drawing Board
Scroll bars Status bar
'UDZLQJ%RDUG When you first start the program, the LOGO!Soft Comfort user interface is displayed. The largest area of the screen is occupied by the space for creating circuit diagrams. That is the Drawing Board where the symbols and links for the control program are arranged.
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7XWRULDO (OHPHQWVRIXVHULQWHUIDFH In order to keep even large circuits manageable, there are scroll bars at the bottom and on the right of the screen which can be used to scroll the diagram horizontally and vertically. 7RROVWRROEDU On the left is the Tools toolbar. The buttons on this toolbar are used to switch to different programming modes in order to be able to create or edit a program quickly and easily. 6WDQGDUGWRROEDU Above the Drawing Board is the Standard toolbar. This contains buttons for creating a new program, opening an existing program and saving the current program as well as for cutting, copying and pasting circuit objects and uploading or downloading programs to or from the LOGO! module. 0HQXEDU Above the Standard toolbar is the Menu bar. The Menu bar menus contain various commands for editing and managing your control programs. There are also functions for entering default settings and transferring programs. 6WDWXVEDU At the bottom of the application window is a Status bar. This displays information about the active tool, the program status and the current zoom factor.
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(QWHULQJDQHZSURJUDP When you start LOGO!Soft Comfort for the first time, you can start creating a new program right away. If you have used LOGO!Soft Comfort before and there are still circuit components from a pervious session on your Drawing Board, you click the "New" button on the Standard toolbar to start a new control program. È 1HZ The previously active program disappears and you can start creating a new control program on a blank Drawing Board. &DXWLRQ don’t forget to save your old control program first if you want to return to it again later on. &UHDWLQJDSURJUDPXVLQJWKHWRROEDUV In our introduction to creating circuit diagrams in LOGO!Soft Comfort, we will only need to use the buttons on the two toolbars. For more detailed information please refer to the succeeding chapters in this manual. To choose a button, you point to it with the mouse pointer and then click the left mouse button. The selected button then appears depressed. È
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7XWRULDO 6HOHFWLQJIXQFWLRQEORFNV The first step in creating a circuit diagram is selecting the function blocks that are required for the intended circuit. Whether you start with inputs and outputs, the basic functions or the special functions is entirely up to you. The &RQVWDQWV button on the Tools toolbar provides access to the constants and terminals, i.e. a selection of inputs and outputs and fixed signal levels. The %DVLF)XQFWLRQV button provides a choice of Boolean algebra functions, i.e. the simplest digital logical operation objects. To obtain the choice of special functions available, you click the 6SHFLDO)XQFWLRQV button. È &RQVWDQWV7HUPLQDOV È %DVLF)XQFWLRQV È 6SHFLDO)XQFWLRQV 3RVLWLRQLQJIXQFWLRQEORFNV Click the button for the group of functions that contains the block you require. All the function blocks of the selected function group are then displayed in a row to the right of the Standard toolbar.
You can then place any of those functions on the Drawing Board simply by clicking on the Drawing Board in the desired position. The function on the extreme left is selected by default but you can select any of the others by clicking them with the mouse.
It is not necessary to position the objects precisely at this point. When the blocks are linked to one another and when adding labels to the circuit, you will want to move the blocks again to achieve the best layout for your control program. Therefore, very precise positioning and alignment of the blocks immediately they are placed in position is somewhat unnecessary.
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7XWRULDO %ORFNQXPEHULQJ The block numbers can not be altered. For basic functions and special functions, block numbering is performed automatically in the order that the blocks are positioned on the diagram. In the case of constants and terminal blocks, instead of a block number, the relevant LOGO! terminal description or a simple description of the block is shown. In addition, inputs, outputs and flags can be assigned other block descriptions using labels. The signal blocks for signal levels high and low do not have block numbers. $VVLJQLQJSDUDPHWHUVWRIXQFWLRQEORFNV When you double-click function blocks, a dialog box for entering the block properties appears. In the case of all special function blocks and some basic function blocks, in addition to the Comments tab there is also one or more tabs for parameters. This is where you specify values or settings to be adopted by the function block in your circuit.
Parameter
You can tell special function blocks simply by the fact that the current parameter values are shown in green on the left of the block. $YDLODELOLW\RIIXQFWLRQEORFNV If you insert more functions in your circuit diagram than the function quantity structure permits, the functions that can no longer be used are shown in gray. If the currently selected function can no longer be used, the first function still usable immediately becomes the selected function.
In LOGO!Soft Comfort, more functions can be used than can be implemented on earlier LOGO! modules. As a result, creation of programs is given absolute priority. If, when simulating a control program, you receive a message to the effect that a circuit can not be implemented with the quantity structure of a LOGO! module, you should first try to make full use of the options offered by the LOGO! in terms of its wide variety of functions. For example, you could try replacing memory-intensive function blocks with a combination of multiple function blocks that in total requires less memory. 6HH&KDSWHU0HPRU\DQG3URJUDP/LPLWV If, despite all attempts at optimization, the desired aim is not achieved, you can use additional LOGO! units as required or limit the functionality of your application.
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7XWRULDO 1HVWLQJGHSWK In LOGO!Soft Comfort you can only implement a certain maximum nesting depth in your control programs. In a program path, the maximum nesting depth is 9 (7 function blocks plus one input and one output in the path). 6HH&KDSWHU0HPRU\DQG3URJUDP/LPLWV /LQNLQJIXQFWLRQEORFNV SURFHGXUH To complete the circuit, the individual blocks have to be linked with one another. To do so, you choose the Link button on the Tools toolbar. È /LQN Now you move the mouse pointer to the terminal pin of a block and press and hold the left mouse button. Keeping the mouse button pressed, you move the mouse pointer to the pin that you want to connect the first pin to and then release the mouse button. LOGO!Soft Comfort then connects the two pins together.
You have created a link between the two block pins. Proceed in the same way for the remaining links. +HOSZLWKOLQNLQJIXQFWLRQEORFNV If a link line is drawn from an output to an input, a window opens showing the designation of the pin. When the mouse button is released, the line snaps to the input indicated.
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7XWRULDO 5XOHVIRUOLQNLQJIXQFWLRQEORFNV The following rules apply to the linking of function blocks:
•
Links can only be made between block inputs and block outputs.
•
An output can be linked to more than one input but an input can not be linked to more than one output.
•
An input and an output on the same program path can not be linked with one another (no recursion). If such a link is required, a flag or an output has to be connected in between.
•
On special functions there are also green "terminal pins". These are not connecting pins but rather for assignment of the parameter settings shown next to the function.
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2SWLPL]LQJWKHYLHZ Once the function blocks have been inserted and connected up, the control program is complete. But there is still a little work to be done in order to obtain a sensible, in other words clearly laid out and space-saving, view of the circuit created. Objects placed on the circuit diagram such as function blocks and lines can be moved accordingly. 6HOHFWLQJREMHFWV Before objects can be moved, aligned or deleted they must first be selected. To select an object you first click the Selection tool on the Tools toolbar. È 6HOHFWLRQWRRO Individual blocks or connecting lines are selected simply by clicking the object concerned; groups of blocks or connecting lines are selected by enclosing them with a rectangle. This is done by pressing and holding the left mouse button and dragging a rectangle to enclose objects you wish to select. When you release the mouse button, the objects enclosed by the rectangle are selected. Selected objects are indicated by small red squares at the corners of the selected areas.
Apart from the methods described above for selecting single and multiple objects, there is another way you can select objects. You can select multiple objects one after the other by holding down the [Ctrl] key as you click subsequent objects. Clicking a selected object while holding the [Ctrl] key deselects the object concerned without deselecting the remaining selected objects.
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7XWRULDO (GLWLQJVHOHFWHGREMHFWV Individual or grouped objects can be deleted by pressing the [Del] key or moved by dragging them with the mouse or the keyboard. When using the cursor keys to move objects, they can be moved in very small steps (referred to as nudging). Selected objects can also be cut, copied or pasted using the relevant buttons on the Standard toolbar. È &XWVHOHFWHGREMHFW È &RS\VHOHFWHGREMHFW È ,QVHUWREMHFW (GLWLQJVHOHFWHGFRQQHFWLQJOLQHV There is a special editing facility for connecting lines. Selected connecting lines have round and square blue handles. The round handles can be used to move the lines at right angles to the direction in which they extend. The square handles can be used to connect the beginning or end of a line to a different terminal pin. The lines are moved by dragging the handles.
If you attempt to connect the end of a line to an unsuitable pin, it automatically jumps back to its original connection point when you release the mouse button. 6SOLWWLQJOLQNV SURFHGXUH Large circuits can easily become difficult to follow as in LOGO!Soft Comfort line junctions and intersections appear the same.In order to make the connections between blocks clearer, you can use the "Split/Reconnect" button on the Tools toolbar. È 6SOLW5HFRQQHFW Click the button and then click on a link. The selected connecting line is graphically split but the link between the blocks remains active. The unconnected ends of the split link are now shown with arrowhead symbols which indicate the direction of signal transmission. The name and pin number of the block to which the unconnected line is linked is shown above the arrowhead symbol.
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7XWRULDO
If you click on a split-link arrowhead while the Split/Reconnect button is active, the link is reconnected.
It is not advisable to use this tool with small circuits as you can optimise the circuit layout simply by rearranging the positions of objects. 6SOLWWLQJOLQNV DGYDQWDJHV With larger and more complex circuits, on the other hand, there may be a large number of connecting line intersections which can make interpretation of the circuit very difficult. In such cases, the Split/Reconnect button is an extremely effective means of making the layout of the circuit significantly clearer. Another advantage of the Split/Reconnect tool becomes obvious with circuits that are too large to fit on a single printed page, in other words which include page breaks. If the Split/Reconnect tool is not used, connecting lines that join blocks on different pages are cut off at the end of the page without any reference to their origin/destination.
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/DEHOV The Label tool on the Tools toolbar allows you to create labels either as bound or unbound text boxes. To do so, click the Label button. È /DEHO If you then click on a block or anywhere else on the Drawing Board, a window opens for you to enter the label text. When you have entered the label text, simply click anywhere outside the label window or press the [ESC] key. The window is closed and the label text is displayed on the diagram. That label can now be selected and moved or aligned.
%RXQGDQGXQERXQGODEHOV Depending on whether you click on a block or a blank space on the Drawing Board, the label you create will be bound or unbound. If you click on a blank space on the Drawing Board, the label you create is unbound. If you click on a block, the label you create is bound to that block. If you select a block to which a label is bound, the label is not simultaneously selected but if you move the block, the label moves with it. If the block is copied or cut, only the block is placed on the Clipboard. If the block is cut from the diagram, the bound label is deleted. However, the bound label can be individually selected and moved, copied, cut or pasted. If a bound label is pasted from the Clipboard, it is no longer bound to the original block. A label can be edited by activating the Label tool and then clicking on the label to be edited.
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7XWRULDO %ORFNFRPPHQWV In the block properties dialog box you will see a Comments tab on which you can enter a name for the function block or remarks as to the purpose of the of the block in your circuit.
Comments
The comments entered are then displayed on the diagram as a bound label and can be positioned as required. If the block is moved, however, the label moves with it. Deleting the block also deletes the label.
*HWWLQJ6WDUWHG 6LPXODWLQJD&RQWURO3URJUDP ,QWURGXFWLRQ The program simulation function allows you to test out a program and alter its parameters. In that way you can be sure that you will be downloading a functioning and optimized program to your LOGO! module.
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6LPXODWLRQPRGH To start the simulation, click the end button on the Tools toolbar. This switches the program to simulation mode. È 6LPXODWLRQ While simulation mode is active, the button appears depressed. Clicking any other button on the Tools toolbar cancels simulation mode and switches back to the programming mode for whichever tool is selected (e.g. for selecting or positioning function blocks).
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7XWRULDO 0HVVDJH:LQGRZ When you start the simulation, the control program is analysed with regard to its resources and the LOGO! module to be used. That information along with any error messages is entered in the Message Window. The Message Window can be activated by choosing View ÈMessage Window from the menu bar.
All accumulated messages from LOGO!Soft Comfort are entered in this window and can be referred back to by scrolling the display.The messages are not permanently saved. When you start LOGO!Soft Comfort, the message window is blank. The messages in the Message Window can be selected so that they can be deleted or copied to other applications.
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7XWRULDO 6WDWXVGLVSOD\ In simulation mode, buttons/message windows are displayed above the Drawing Board next to the Standard toolbar for displaying the status of inputs, outputs and power supply. The status bar displays details of which LOGO! model is the minimum requirement for implementing your control program.
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5HSUHVHQWDWLRQRILQSXWV The inputs are represented as buttons with a key or switch symbol. Below the symbol is the designation for the input shown. An open input corresponds to a switch that has not been operated. If you click a button it appears depressed and the switch is shown as closed.
È Button for key I1, not operated È input open
È Button for key I1, operated È input closed
È Button for switch I2, not operated È input open
È Button for switch I2, operated È input closed
È Status box for input module I3 È frequency input
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7XWRULDO )XQFWLRQRILQSXWV Inputs can be configured in a variety of ways. In order to change the behavior of an input, you choose "Tools È Simulation Parameters" from the menu bar. In the dialog box that opens you can then define the function of the input switch. A choice of three options is offered: •
Switch
•
Key
•
Frequency
A key is only active while it is held down. As soon as it is released and is no longer depressed, the contact is open again. A switch remains active after being pressed and released and is not deactivated until it is pressed again. The frequency of a frequency input can be preset or changed while the simulation is running. The frequency should be entered in Hz. A frequency input is a special case in this context as it should only be used with the trigger special function block. 6HH&KDSWHU)UHTXHQF\7ULJJHU Inputs are identified by the letter I. For the relevant LOGO! models there are also inputs identified by the letters Ia which are for the ASi bus inputs.
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7XWRULDO 'LVFRQQHFWLQJWKHSRZHU Clicking the Power button disconnects the power supply for all inputs thereby simulating a power failure.
È Power button, not pressed
È Power button, pressed È simulates power failure The behavior of the circuit in terms of power failure response, restart and remanence can be tested with this function. 2XWSXWV The status of an output or flag is indicated by a light or dark bulb symbol. Below the bulb symbol is the designation of the output in your control program.
È Status icon for output Q1 È output not conducting
È Status icon for output Q1 È output conducting The output status icons are purely status indicators. They are not buttons for operating the output. When your control program activates an output, the bulb is shown switched on; an inactive output is indicated by a switched off bulb. Outputs are identified by the letter Q for outputs and M for flags. Some outputs may have the identification letters Qa, in which case they are outputs for the ASi bus (only available on the applicable LOGO! models).
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7XWRULDO $VVLJQLQJSDUDPHWHUVGXULQJWKHVLPXODWLRQ If you double-click a block while the simulation is running, the Properties dialog box for the block appears. Here you can enter comments or set parameters just as in programming mode.
While the simulation is running, the current parameter values are displayed. This analysis facility allows you to follow the behavior of your control program. Multiple parameter assignment windows can be open while the simulation is running. You can also reduce them to such a size that only the actual values remain visible.
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6DYLQJDSURJUDP To save your program, click the Save button on the Standard toolbar. È 6DYH The program is saved with the name it was opened as and any older versions are overwritten. If it is a new program that you are saving for the first time, you are asked to specify a path to save it to and a name for the program. 2SHQLQJDSURJUDP If you wish to export your control program, revise it, or download it to a LOGO! module, you can open it again at any time. È 2SHQ
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Menu bar Standard toolbar
Tools toolbar
Drawing Board
Scroll bars Status bar
0HQXEDU The Menu bar menus contain various commands for editing and managing your control programs. There are also functions for entering default settings and transferring programs. 7RROEDUV A Standard toolbar and a Tools toolbar provide the facility for quick and easy access to the most important and most frequently used functions in LOGO!Soft Comfort. 6WDWXVEDU The status bar displays details of the currently selected tool, the program status and the current zoom factor. 'UDZLQJ%RDUG The Drawing Board is where the symbols and links for the control program are arranged. It is the actual working space of the program. 6FUROOEDUV In order to keep even large circuits manageable, there are scroll bars at the bottom and on the right of the screen which can be used to scroll the diagram horizontally and vertically.
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*HQHUDOGHVFULSWLRQ The buttons on the Standard toolbar represent commands that are also available from the menu bar. Placing buttons for the most important commands on the Standard toolbar provides a means of quick access to the most important functions. ÈStandard toolbar There are buttons for the commands 1HZ, 2SHQ and 6DYH from the File menu and the commands &XW, &RS\ and 3DVWH from the Edit menu. Buttons are also provided for the file transfer commands /2*2È3& (Upload) and 3&È/2*2 (Download) from the Tools menu. 1HZ
The Drawing Board is cleared as it is when the program is first started ready for the creation of a new control program. Depending on the default settings, a Properties dialog box for the program to be created may appear. On the other hand, the Properties dialog box may not appear if the default setting has been specified accordingly at File È Properties. It can nevertheless be opened whenever required and entries made or altered. It is essential that any previously created control program on the Drawing Board is saved before clicking the New button as this action clears the Drawing Board ready for creation of a new program. If you do not save an existing program before pressing the New button, LOGO!Soft Comfort asks you to confirm that you definitely do not wish to save the existing program. Alternatively, you have the option of performing a Quick Save. Program sections that have previously been placed on the Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function. 2SHQ
A dialog box opens from which you can select and open a previously created control program in order to edit it on the Drawing Board. Control programs created in LOGO!Soft Comfort must have the file extension *.lsc. It is essential that any previously created control program on the Drawing Board is saved before clicking the Open button as this action clears the Drawing Board ready to load the program being opened. If you do not save an existing program before pressing the Open button, LOGO!Soft Comfort asks you to confirm that you definitely do not wish to save the existing program. Alternatively, you have the option of performing a Quick Save. Program sections that have previously been placed on the Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function.
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If you are saving a new program for the first time, a dialog box opens for you to specify the path and file name to which the program is to be saved. If you are saving a modified version of an existing program, a Quick Save is performed. The old version of the program is overwritten by the revised version - in other words the new program is saved to the same path and name as the source file. &XWVHOHFWHGREMHFW
One or more selected objects, i.e. function blocks and/or connecting lines, are deleted from the Drawing Board and placed on the Clipboard. &RS\VHOHFWHGREMHFW
One or more selected objects, i.e. function blocks and/or connecting lines, are copied from the Drawing Board and placed on the Clipboard. 3DVWHREMHFW
Objects previously placed on the Clipboard are pasted onto the Drawing Board. The position at which they are inserted is either below the previously selected object or a position specified previously by clicking with the mouse. /2*2È3& 8SORDG
The control program on the LOGO! module is uploaded to LOGO!Soft Comfort. As the program on the LOGO! module lacks the graphical information used in LOGO!Soft Comfort, the arrangement of the blocks is performed automatically according to the LOGO!Soft programming software conventions. 6HH&KDSWHU7RROV0HQX 3&È/2*2 'RZQORDG
The control program created on the PC in LOGO!Soft Comfort is downloaded to the LOGO! module. As the LOGO! module can not use the graphical information used in LOGO!Soft Comfort, the program labels and terminal designations are not downloaded. For that reason, it is advisable to save the program on the PC beforehand. 6HH&KDSWHU7RROV0HQX
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7RROV7RROEDU
*HQHUDOGHVFULSWLRQ The Tools toolbar incorporates buttons for program design and editing functions. Each of the tools represents a programming mode in which mouse operations have different effects. ÈTools toolbar The choice of modes on this toolbar is not available from the menu bar. 6HOHFWLRQWRRO
This mode is used for selecting and moving function blocks. Objects can be selected individually by left clicking with the mouse; multiple selections can be made using [Ctrl]+Left click or by dragging a rectangle to enclose the objects to be selected. /DEHOWRRO
This tool is used to place or edit user-definable text objects on the Drawing Board. As well as unbound labels, you can also create labels that are bound to specific blocks and are moved or deleted along with the block to which they are bound. To create a bound label, you click on the required block when the Label tool is active. There can only be one bound label for each function block. You can specify the font, font size and color individually for each label. 6SOLW5HFRQQHFWWRRO
This tool is used to split or reconnect links between function blocks. To split a link you select the line concerned by left clicking with the mouse while the Split/Reconnect tool is active. When a connecting line is split, the unconnected ends are shown with an arrowhead indicating the function block to which they are linked. That reference specifies the block name and input/output number of the block to which the connecting line is linked. /LQNWRRO
This tool is used to link up inputs and outputs on the function blocks placed on the Drawing Board. To do so you move the mouse pointer to an input or output pin of a block and press and hold the left mouse button. Keeping the mouse button pressed, you drag the mouse pointer to the pin that you want to connect the first pin to. Now release the mouse button to fix the connecting line between the two pins. While the connecting line is being drawn it is shown as a straight line between the first pin and the mouse pointer. Once it has been fixed, it appears as a combination of horizontal and vertical lines which can be manipulated using the selection tool.
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*XLGHWR/2*26RIW&RPIRUW &RQVWDQWVDQG7HUPLQDOVWRRO
This tool has to be selected if you want to place input blocks, output blocks, flags or constants (high, low) on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Constants and Terminals tool.
%DVLF)XQFWLRQVWRRO
This tool has to be selected if you want to place simple Boolean logical operation blocks on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Basic Functions tool.
6SHFLDO)XQFWLRQVWRRO
This tool has to be selected if you want to place special remanence or time-related function blocks on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Special Functions tool.
6LPXODWLRQWRRO
When you select the Simulation tool, a toolbar for monitoring and controlling inputs and outputs appears. A software switch acts as a means of simulating a power failure so that the circuit can be tested out for remanence characteristics. The control program created and all its function blocks remain visible during the simulation.
When the simulation is started, a program check is carried out and the results written to the Message Window which can be viewed by choosing View È Message Window from the menu bar.
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*XLGHWR/2*26RIW&RPIRUW
'HVFULSWLRQRI0HQX%DU ,QWURGXFWLRQ The menus on the Menu bar provide access to a variety of functions for managing and editing control programs for LOGO! modules.
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*XLGHWR/2*26RIW&RPIRUW
)LOH0HQX
*HQHUDOGHVFULSWLRQ The File menu contains commands for file management. There are commands for opening, saving and creating control programs as well as for printing and for setting general file properties.
1HZ The Drawing Board is cleared as it is when the program is first started ready for the creation of a new control program. Depending on the default settings, a dialog box with three tabs for entering the properties of the program to be created may appear. It can in any case be recalled at any time to either enter or alter property settings by choosing File È Properties from the menu bar. It is essential that any previously created control program on the Drawing Board is saved before clicking the New button as this action clears the Drawing Board ready for creation of a new program. In order to prevent an existing program being accidentally deleted, a dialog box opens asking the user if the current program should be saved first. This dialog box only opens if the program has been altered since the last time it was opened.
Program sections that have previously been placed on the program’s Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function. There is also a button for this menu command on the Standard toolbar. È Button for menu command 1HZ
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*XLGHWR/2*26RIW&RPIRUW 2SHQ A dialog box opens from which you can select and open a previously created control program in order to edit it on the Drawing Board. Control programs created in LOGO!Soft Comfort have the file extension *.lsc.
It is essential that any previously created control program on the Drawing Board is saved before clicking the Open button as this action clears the Drawing Board ready for creation of a new program. In order to prevent an existing program being accidentally deleted, a dialog box opens asking the user if the current program should be saved first.
If a file being opened has the extension .lgo, this indicates that it is in LOGO!Soft format. Missing information about the graphical representation of the program is then added by LOGO!Soft Comfort. For details of how to save a LOGO!Soft Comfort program in LOGO!Soft format, refer to the command Export. There is also a button for this menu command on the Standard toolbar. È Button for menu command 2SHQ 6DYH If you are saving a new program for the first time, a dialog box opens for you to specify the path and file name to which the program is to be saved. If you are saving a modified version of an existing program, a Quick Save is performed. The old version of the program is overwritten by the revised version - in other words the new program is saved to the same path and name as the source file.
There is also a button for this menu command on the Standard toolbar. È Button for menu command 6DYH
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*XLGHWR/2*26RIW&RPIRUW 6DYH$V A dialog box opens for you to specify the path and file name to which the current program is to be saved. In this way, programs that have been changed can be saved with a different name or to a different directory so that previous versions of the program can be retained and retrieved if necessary. ([SRUW LOGO!Soft Comfort provides an interface for exchanging control programs with the program LOGO!Soft in LOGO!Soft version 3.x format to the path specified. When the file is converted, additional information such as the graphical data relating to the position of the function blocks is omitted. For details of how to open a LOGO!Soft program in LOGO!Soft Comfort, refer to the description of the command File Open. 3DJH6HWXS This command opens a dialog box in which you can specify the page settings for creating control programs. Arrangement of the function blocks can then take account of the print layout requirements. LOGO!Soft Comfort provides the facility for multi-page printout with the position of page breaks indicated on the screen. The print area is user-definable up to a maximum of 297 mm x 420 mm (A3) and can therefore be adjusted to fit all commonly used paper formats. The area that can not be printed by the printer can be entered in the relevant boxes. For details of these measurements, refer to your printer’s manual. The side margins are made up as follows from the measurements entered: Margins (mm) + Unprintable area (mm) = Margin left/top
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*XLGHWR/2*26RIW&RPIRUW The settings made at this point have no effect on the printer settings. To alter those settings you have to choose File È Print or Tools È Options È Print from the menu bar. 3ULQW The standard Windows Printers dialog box provides access to options for choice of printer and printer properties. Other printer settings can be made on the Windows Control Panel. Other printer output settings can be specified by choosing Tools È Options È Print from the menu bar. 3URSHUWLHV The Properties dialog box contains tabs for General Properties , Comments and Statistics. The General tab provides the facility for entering details of the current control program. There are input boxes for project-related and internal company data.
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*XLGHWR/2*26RIW&RPIRUW On the Comments tab you can enter a brief description of the control program or notes relating to it.
The Statistics tab shows details of when the control program was created and when it was last altered.
([LW This command closes down the LOGO!Soft Comfort application.
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*XLGHWR/2*26RIW&RPIRUW
(GLW0HQX
*HQHUDOGHVFULSWLRQ The Edit menu provides functions for editing your control program. However, the basic commands for creating and editing a control program are accessed via the various programming modes offered by the Tools toolbar.
8QGR This command allows you to reverse actions carried out on the Drawing Board. LOGO!Soft Comfort allows you to undo up to the last ten operations. Functions that are undone can not automatically be reinstated. If you hover the mouse over the Undo command, a tooltip appears indicating the what type of action will be undone. &XW One or more selected objects, i.e. function blocks and/or connecting lines, are deleted from the Drawing Board and placed on the program’s Clipboard. There is also a button for this menu command on the Standard toolbar. È Button for menu command &XW &RS\ One or more selected objects, i.e. function blocks, labels or connecting lines, are copied from the Drawing Board and placed on the program’s Clipboard. There is also a button for this menu command on the Standard toolbar. È Button for menu command &RS\ 3DVWH Objects previously placed on the program’s Clipboard are pasted onto the Drawing Board. The position at which they are inserted is either below the previously selected object or a position specified previously by clicking with the mouse. There is also a button for this menu command on the Standard toolbar. È Button for menu command 3DVWH
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*XLGHWR/2*26RIW&RPIRUW The contents of the Clipboard can only be pasted if there are sufficient resources available. Function blocks take up a certain amount of resources according to the type of function block. If there are not sufficient resources available, a message to that effect is displayed.
Connecting lines with unconnected ends can not be pasted. Connecting lines can only be pasted if they connect two function blocks and have been placed on the Clipboard together with those function blocks. 6HOHFW$OO All objects on the Drawing Board are selected, i.e. function blocks, connecting lines and labels. %ULQJ7R)URQW If a number of objects are overlapping one another, a specifically selected object can be brought to the front. 6HQG7R%DFN If a number of objects are overlapping one another, a specifically selected object can be sent to the back. 7HUPLQDO'HVFULSWLRQ A dialog box for entering terminal descriptions opens. Here you can enter designations for inputs and outputs. The terminal designations are shown in brackets next to the block designation. You can specify whether or not the terminal designations are to be shown on the screen and on printouts by choosing Tools È Options È Screen from the menu bar.
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*XLGHWR/2*26RIW&RPIRUW %ORFN3URSHUWLHV To open the Block Properties window, you first have to select a block for which the properties are to be displayed. If multiple blocks are selected, the dialog box only shows the properties of the first of them.
The block properties dialog box consists of a number of tabs. Every block has a Comments tab on which the user can enter remarks relating to the selected block, for example. With some function blocks there is also a Parameters tab.
)RUPDW0HQX
*HQHUDOGHVFULSWLRQ This menu provides formatting options for labels and function groups. You can define the font, the font size and style as well as the alignment of selected objects.
)RQW font, the font style, font size and font color of text. To define the format of existing text objects, you have to select them first. You can then specify the font attributes you require and click OK to apply the new formatting. 7KHIROORZLQJIRQWIRUPDWRSWLRQVDUHDYDLODEOH Font
Font size
Color
Dialog SansSerif Serif Monospaced DialogInput
8 9 10 12 14 18 24 36 48 72
Black Blue Green Red Pink Magenta Orange
Font style Bold Italic
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Yellow Aquamarine Sea green Dark gray Light gray White Transparent
33
*XLGHWR/2*26RIW&RPIRUW If you wish particular settings to be used as the standard format, you can specify them as the default format settings. New text objects are then displayed with the default format attributes. To return to the default settings, click the Default button.
$OLJQPHQW The Alignment command is used to align labels and function blocks in a choice of two ways.
•
Vertical: selected objects are aligned flush right.
•
Horizontal: selected objects are aligned horizontally.
Objects are aligned with the first block selected if blocks are selected individually or with the last block included if blocks are selected collectively.
9LHZ0HQX
*HQHUDOGHVFULSWLRQ The View menu allows you to set the zoom factor at which your circuit is displayed and specify whether to show or hide various display windows.
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*XLGHWR/2*26RIW&RPIRUW =RRP LOGO!Soft Comfort offers a variety of options for enlarging or reducing the size at which the control program is displayed. When you choose Zoom, a dialog box opens in which you can select the zoom factor from a list of set choices or enter a custom zoom factor in the relevant box.
If you choose an unsuitable zoom factor, the objects might appear out of focus on your screen. For that reason you should use the set zoom factors wherever possible. This "out of focus" appearance has no effect on the appearance of the control program when printed out. =RRP,Q The zoom factor is increased in the following fixed increments: 100 È 150 È 200 È 250 È 300 È 400 (maximum) =RRP2XW The zoom factor is decreased in the following fixed increments: 100 È 75 È 50 È 25 (minimum)
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*XLGHWR/2*26RIW&RPIRUW 7RROEDUV This command allows you to specify individually for each of the toolbars whether they should be shown or hidden.
•
Standard: showing and hiding the Standard toolbar
•
Tools: showing and hiding the Tools toolbar
0HVVDJH:LQGRZ The Message Window displays program messages. Following simulation of a control program, the Message Window shows details of the resources used together with the current date and time. Details of the LOGO! modules on which the simulated control program can be used are also given.
Other messages that appear in the Message Window are as follows: Outputs without function: lists output blocks which have been placed on the Drawing Board but to which no link to a terminal block is assigned (inputs, Hi, Lo). In other words, the value of the connected output will never be able to change. ([DPSOH
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*XLGHWR/2*26RIW&RPIRUW Blocks without links to an output: lists blocks that have been placed on the Drawing Board but to which no link with an output is assigned. ([DPSOH
6WDWXV%DU This command allows you to have the Status Bar showing or hidden. The Status Bar is made up of three sections. The first section, on the far left, shows details of the active tool and any program messages. The second section indicates whether the open control program has been modified, and the third section shows the current zoom factor.
7RROWLSV When you hover the mouse over a button, a Tooltip appears showing the name of the button. Tooltips can be switched on or off.
7RROV0HQX
*HQHUDOGHVFULSWLRQ The Tools menu provides commands for entering the settings for program transfer as well as for the LOGO! module, the program simulation and other options.
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*XLGHWR/2*26RIW&RPIRUW 7UDQVIHU The program is transferred via the serial interface specified at Tools È Options È Interface. The LOGO! module must be connected to the PC using the connecting lead and must have been set to PC/Card È PCÛLOGO ready for transfer of the program.
Otherwise LOGO!Soft Comfort will return an appropriate error message.
7UDQVIHU 3&È/2*2 Transfers a control program created in LOGO!Soft Comfort to a LOGO! module.
Before transfer is started, the minimum LOGO! model required to run the program created is established. If the control program created can not be run on the LOGO! module being used, an error message is displayed and transfer of the program is terminated. If the LOGO! model can not be established, a message is displayed informing the user. The user then has the choice of continuing with the transfer or cancelling it. There is also a button for this menu command on the Tools toolbar. È Button for menu command 3&È/2*2 (Download) Transfer messages are displayed on the Status Bar and in the Message Window. If errors occur during transfer the user can restart the transfer after a query. If no errors occur during transfer, a message to that effect appears on the Status Bar. Error messages are shown in detail in the Message Window.
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*XLGHWR/2*26RIW&RPIRUW 7UDQVIHU /2*2È3& The control program on the LOGO! module is uploaded to LOGO!Soft Comfort.
When a program is uploaded from the LOGO! module it lacks the graphical information used in LOGO!Soft Comfort for arrangement of the blocks on the Drawing Board. In such cases, a suitable layout for the control program is automatically generated. The circuit diagram generated corresponds to the layout in the LOGO!Soft block diagram except that function blocks used more than once are not displayed more than once but are identified by block links. On completion of the transfer operation, the control program uploaded from the LOGO! module is displayed on the Drawing Board. It is always positioned in the top left corner of the Drawing Board. If necessary, you should use the scroll bars to bring the circuit into view. There is also a button for this menu command on the Tools toolbar. È Button for menu command /2*2È3& (Upload) Transfer messages are displayed on the Status Bar and in the Message Window.
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*XLGHWR/2*26RIW&RPIRUW 6HW&ORFN This command allows you to set the date and time. In order to be able to communicate with a LOGO! module, the LOGO! module must first be set to PC/Card È PCÛLOGO and connected to the PC using the connecting lead.
Clicking Read or Write reads the current date from the LOGO! module or writes the date set in LOGO!Soft Comfort to the LOGO! module. The Current Time button adopts the PC system time as the current date. 6HW&ORFN HQWHULQJGDWHWLPHPDQXDOO\ If you place the insertion point in the date/time boxes rather than clicking the up and down arrows, you can type the figures directly on the keyboard. If the date details are transferred to the LOGO! module but the date is implausible, the LOGO! module automatically counts the "surplus" days as part of the next month. ([DPSOH Input:
Day 41; Month 5; Year 1999
Interpreted by LOGO! as:
Day 10, Month 6, Year 1999
May has 31 days, so there are 10 surplus days which are carried over to the next month. The Set Clock dialog box then shows the date as it has been interpreted by the LOGO! module. The identical procedure is also applied to implausible figures in any of the other boxes. 'HWHUPLQH/2*2 When you choose this command, LOGO!Soft Comfort works out the minimum LOGO! model needed to run the control program created. The result is shown on the Status Bar. The Message Window details all models that can run the control program created. 6LPXODWLRQ When you choose Simulation, a toolbar for monitoring and controlling inputs and outputs appears. A software switch acts as a means of simulating a power failure so that the circuit can be tested out for remanence characteristics. The control program created and all its function blocks remain visible during the simulation. There is also a button for this menu command on the Tools toolbar. È Button for menu command 6LPXODWLRQ.
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*XLGHWR/2*26RIW&RPIRUW 6LPXODWLRQ3DUDPHWHUV A dialog box listing all available inputs opens. Here you can assign an appropriate function to every input used. The choice of functions offered extends to key, switch or frequency input. In the case of frequency inputs, the simulated frequency in Hz can be entered.
2SWLRQV *HQHUDO Here you can specify the settings for language and the number of pages to be used for creating the program. You can define how the pages are to be arranged to suit your circuit layout requirements. The language setting determines the language used for the menus and online Help.
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*XLGHWR/2*26RIW&RPIRUW 2SWLRQV 6FUHHQ Here you can specify what types of text objects you wish to have displayed on the screen.
2SWLRQV 3ULQW Here you can specify which types of text object you wish to be visible on the printout.
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*XLGHWR/2*26RIW&RPIRUW 2SWLRQV ,QWHUIDFH Here you can manually enter the interface to be used or you can choose to have it detected automatically. With the latter option, all interfaces are checked for the presence of a LOGO! module.
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*XLGHWR/2*26RIW&RPIRUW
+HOS0HQX
*HQHUDOGHVFULSWLRQ This menu provides access to Help and other information about LOGO!Soft Comfort.
&RQWHQWV This command opens the LOGO!Soft Comfort manual. The PDF file format makes for straightforward printing out of the Help manual. If the program fails to find a PDF file reader, the user must specify the path for the reader.
$ERXW This displays the version number and the release date of your LOGO!Soft Comfort program.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
3URJUDPPLQJLQ/2*26RIW&RPIRUW 6SHFLILFDWLRQRI/2*20RGHO ,QWURGXFWLRQ Specific program settings are not required. With LOGO!Soft Comfort you can start designing your own control programs right away. In LOGO!Soft Comfort you write your programs first and then have LOGO!Soft Comfort work out for you which LOGO! model you need as a minimum to implement your ideas! The minimum LOGO! model you require to implement your ideas depends on a number of factors as follows: •
The number of inputs and outputs to be used
•
The amount of memory used by the control program
•
Special functions used
•
Use of an ASi bus connection
/2*20RGHOV LOGO!Soft Comfort distinguishes between the LOGO! Innovation models and the 1stgeneration models, identifiable by the last digits of the order number (0BA0). Among other things, the latter have less memory and no bit memory blocks. The current LOGO! models are 2nd-generation models. They are part of the LOGO! Innovations range. They are recognizable by the last digits of their order number as follows: 0BA1. Currently the range of models is as follows: 'HVLJQDWLRQ
2UGHU1XPEHU
'HVLJQDWLRQ
2UGHU1XPEHU
12 RC 12 RCL 24 24 L 24 RC
6ED1052-1BB00-0BA1 6ED1053-1BB00-0BA1 6ED1052-1CA00-0BA1 6ED1053-1CA00-0BA1 6ED1052-1HB00-0BA1
24 RCL 230 RC 230 RCL 24 RCL B11 230 RCL B11
6ED1053-1HB00-0BA1 6ED1052-1FB00-0BA1 6ED1053-1FB00-0BA1 6ED1053-1HH00-0BA1 6ED1053-1FH00-0BA1
For the purposes of the control program, the LOGO! Innovation models are distinguished by the number of inputs and outputs and whether or not they have an ASi connection. All of these models have the same amount of memory.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 6SHFLDOIXQFWLRQVGHSHQGHQWRQ/2*2PRGHOV 6SHFLDO)XQFWLRQ%ORFN
/2*20RGHO8VDEOH:LWK 0BA0 Standard
0BA0 ...L
0BA0 ...LB11
0BA1 All
ON delay
Yes
Yes
Yes
Yes
OFF delay
Yes
Yes
Yes
Yes
Pulse relay
(Yes)
Yes
Yes
Yes
Time switch
Yes
Yes
Yes
Yes
(Yes)
Yes
Yes
Yes
Pulse generator
Yes
Yes
Yes
Yes
Retentive ON delay
Yes
Yes
Yes
Yes
(Yes)
Yes
Yes
Yes
Wiping relay
No
Yes
Yes
Yes
Hours counter
No
Yes
Yes
Yes
Trigger
No
Yes
Yes
Yes
Year clock
No
No
No
Yes
Asynchronous pulse generator
No
No
No
Yes
Latching relay
Counter
Limitations of 0BA0 Standard: pulse relay, counter and latching relay have no remanence, the counter is 4-digit.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
0HPRU\DQG3URJUDP/LPLWV ,QWURGXFWLRQ There are a number of limits for a control program on a LOGO! module as follows: •
Memory (use of memory by function blocks)
•
Number of blocks connected in sequence (nesting depth)
8VHRIPHPRU\ The function blocks in a control program require a certain amount of memory. The table below summarizes how much memory each function block occupies in each memory area. )XQFWLRQ%ORFN
3DU
5$0
7LPHU
5(0
Basic functions
0
0
0
0
ON delay
1
1
1
0
OFF delay
2
1
1
0
Pulse relay*
0
(1)
0
(1)
Time switch
6
2
0
0
Latching relay*
0
(1)
0
(1)
Pulse generator
1
1
1
0
Retentive ON delay
2
1
1
0
Counter*
2
(2)
0
(2)
Wiping relay
1
1
1
0
Hours counter
2
0
0
4
Trigger
3
3
1
0
Year clock
2
0
0
0
Asynchronous pulse generator
3
1
1
0
* Depending on configuration of remanence for function, each function occupies the following amount of memory: •
Remanence switched off: function occupies RAM area
•
Remanence switched on: function occupies REM area
0HPRU\ The maximum amount of memory a program can occupy on a LOGO! module is as follows: 0HPRU\
%ORFNV
3DU
5$0
7LPHU
5(0
%LW
LOGO! 0BA1 Innovation
56
48
27
16
15
4
LOGO! 0BA0
30
27
24
10
0/7
0
3URJUDPSDWK A program path consists of a series of function blocks starting with a terminal block and ending with an output block. The number of function blocks in a program path indicates the nesting depth.
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47
3URJUDPPLQJLQ/2*26RIW&RPIRUW Terminal blocks for the purposes of determining nesting depth are: •
Inputs (I, Ia)
•
High, Low (Hi, Lo)
•
Flags (M)
•
Outputs (Q, Qa)
Outputs for the purposes of determining nesting depth are: •
Outputs (Q, Qa)
•
Flags (M)
1HVWLQJGHSWK There is a maximum nesting depth that you can implement in your control program for a LOGO! module. The maximum nesting depth in a program path is 9 blocks. The following equation therefore results: 1 Terminal block + 7 Function blocks + 1 Output block Max. program path nesting level:
9 Blocks
If a program path that exceeds the maximum nesting depth is entered in LOGO!Soft Comfort, an error message is displayed if you attempt to perform a download or simulation.
Max. nesting depth exceeded
Error message
,PSOHPHQWLQJORQJSURJUDPSDWKV Longer program paths can be implemented by means of signal feedback. This is done by placing a flag block at the end of a path. The remaining function blocks are connected to the output of the flag. The LOGO! interprets the flag as the output of the first program path and as the terminal block of the succeeding function blocks. On the LOGO! the long path with the flag is treated as two separate paths. If no more flags are available, you can use an output block instead.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
%ORFNVDQG%ORFN1XPEHUV %ORFNV Blocks symbolize terminals or functions. In LOGO!Soft Comfort various types of block are distinguished and identified by abbreviations. %ORFN7\SH
,GHQWLILHU
%ORFN7\SH
,GHQWLILHU
Input
I
Flag
M
ASi input
Ia
High level
Hi
Output
Q
Low level
Lo
ASi output
Qa
Function
B
%ORFNQXPEHUV Whenever you insert a function block in your control program, LOGO!Soft Comfort assigns that block a number, the block number. On the LOGO! and in LOGO!Soft, the number of the current block is shown at the top right of the display. In LOGO!Soft Comfort, the block number is shown directly above the block. Block numbers assist navigation around the LOGO! display and the assignment of links. In LOGO!Soft Comfort you can also trace back split links by the block number indicated. The block designations of the inputs and outputs can be changed by means of the parameter assignment facility. In this case the designations are a representation of the real inputs and outputs on the LOGO! module. A specific input or output can be selected by means of the parameter assignment facility. The blocks High and Low are not assigned numbers as they do not change their switching condition and therefore do not have to be distinguished.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
&RQVWDQWVDQG7HUPLQDOV &R
,QSXWV Input blocks represent the input terminals on a LOGO! module. Up to 12 inputs can be used. Using the block parameter assignment facility, an individual input block can also be assigned a different input terminal. However, the choice of inputs only includes those that have not already been assigned in the control program.
,QSXWVIRU$6L
Some LOGO! models (...B11) have the facility for connection to an ASi bus. Up to 4 ASi inputs can be used. Using the block parameter assignment facility, an individual input block can also be assigned a different ASi input. However, the choice of inputs only includes those that have not already been assigned in the control program.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
2XWSXWV
Output blocks represent the output terminals on a LOGO! module. Up to 8 inputs can be used. Using the block parameter assignment facility, an individual output block can also be assigned a different output terminal. However, the choice of outputs only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
2XWSXWVIRU$6L
Some LOGO! models (...B11) have the facility for connection to an ASi bus. Up to 4 ASi outputs can be used. Using the block parameter assignment facility, an individual output block can also be assigned a different ASi output. However, the choice of outputs only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
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Flag blocks apply the same signal to their outputs that is applied to their inputs. Flags can be used to increase the nesting level of a path by connecting a flag block to the output of the path. Up to 4 flags can be used. Using the block parameter assignment facility, an individual flag can also be assigned a different flag number. However, the choice of flag numbers only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
)L[HG6LJQDO/HYHOV
If the signal level ’1’ or ’H’ is to be applied constantly to the input of a block then it should be assigned the fixed signal KL (stands for high). Blocks for representing fixed voltage levels can not be configured.
If the signal level ’0’ or ’L’ is to be applied constantly to the input of a block then it should be assigned the fixed signal OR (stands for low). Blocks for representing fixed voltage levels can not be configured.
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The output of the AND function only adopts the condition 1 if DOO inputs have the condition 1, i.e. are closed. If an input pin of this block is not connected it automatically has the condition ’1’. Logic table for AND block:
,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
0 0 0 0 0 0 0 1
25
The output of the OR function adopts the condition 1 if DW OHDVW one input has the condition 1, i.e. is closed. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for OR block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
0 1 1 1 1 1 1 1
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The output adopts the condition 1 if the input has the condition 0, i.e. the NOT function inverts the condition at the input. If an input pin of this block is not connected it automatically has the condition ’1’. The advantage of the NOT function can be illustrated by the following example: you no longer require break switches for LOGO! You use a make switch and convert it into a break switch by using the NOT function. Logic table for NOT block:
,QSXW
2XWSXW
0 1
1 0
;25
The output of the XOR (exclusive OR) block adopts the condition 1 if the inputs have differing conditions. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for XOR block:
,QSXW
,QSXW
2XWSXW
0 0 1 1
0 1 0 1
0 1 1 0
1$1'
The output of the NAND (not AND) function only adopts the condition 0 if DOO inputs have the condition 1, i.e. are closed. If an input pin of this block is not connected it automatically has the condition ’1’. Logic table for NAND block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0
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The output of the NOR (not OR) function only adopts the condition 1 if all inputs have the condition 0, i.e. are switched off. Immediately any of the inputs is switched on (condition 1) the output switches off. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for NOR block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
1 0 0 0 0 0 0 0
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In the case of the ON delay, the output is not switched over until a definable time period has elapsed. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the condition at the input Trg changes from 0 to 1, a timed period Ta commences. Ta is the elapsed time on the LOGO! module. If the condition at input Trg remains 1 for long enough for the time T to elapse, the output is set to 1. There is a delay between the time when the input is switched on and the output switches on. If the condition at the input Trgswitches back to 0 before the time T has elapsed, the timer is reset. The output is reset to 0 if the condition at the input Trg is 0. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the delay period
Parameter 7
T is the delay period after which the output is switched on (output signal is switched from 0 to 1).
Output 4
Q switches on after expiry of the defined time T if Trg is still set.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time delay parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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In the case of the OFF delay, the output is not switched off until a definable time period has elapsed. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ If the input Trg switches to the condition 1, the output switches to 1 immediately. If the condition at Trg switches to 0, a timer starts timing the elapsed time Ta on the LOGO! module, the output remains set. If Ta reaches the time specified for T (Ta=T), the output Q is reset to 0. If the input Trg switches on and off again the timer starts timing the elapsed time Ta again. The input R (Reset) resets the elapsed time Ta and the output before the set time delay T has elapsed. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
A negative signal edge (change from 1 to 0) at the input Trg (Trg stands for trigger) starts the OFF delay timer
Input 5
The input R (Reset) resets the elapsed time for the OFF delay and sets the output to 0. (Reset has priority over Trg)
Parameter7
T is the delay period after which the output is switched off (output signal is switched from 1 to 0).
Output 4
Q switches on when Trg does but when Trg switches off remains on until the delay period T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time delay parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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The output is set and reset by a short pulse at the input. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Every time the condition at the input Trg changes from 0 to 1, the output Q changes its condition, i.e. the output is switched on or off. The input R resets the pulse relay to its original condition. After a power on or reset, the pulse relay is reset and the output set to 0. 3LQDVVLJQPHQW &RQQHFWLRQ
'HVFULSWLRQ
Input 7UJ
The input Trg (Trg stands for trigger) switches the output Q on and off.
Input 5
The input R (Reset) resets the pulse relay and sets the output to 0. (Reset has priority over Trg)
Parameter3DU
This parameter is used to switch remanence on or off. Rem: Off = no remanence On = condition can be remanently stored
Output 4
LOGO!Soft Comfort Manual
Q switches on when Trg switches on and off again the next time Trg switches on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The block’s remanence can be activated in the block properties. If remanence is active, the condition of the block output is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the block output is set to 0 when power is restored after a failure.
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Up to three time windows in which the output is active can be defined. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Each time switch has three setting cams each of which can be used to configure a time window. You use the cams to set the on and off times for the time windows. At the on times, the time switch switches the output on if it is not already on. At the off times, the time switch switches the output off if it is not already off. If you set an on time on one cam that is the same as the off time on another cam on the time switch then the on and off times conflict. In such cases, Cam 3 has priority over Cam 2 and Cam 2 has priority over Cam 1. The LOGO! module is not susceptible to year-2000 problems. 3LQDVVLJQPHQW &RQQHFWLRQ
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Parameter &DP, &DP, &DP
The Cam parameter is used to set the on and off times for each of the ”&DPV” of the time switch. You specify the the times in terms of day and time.
Output 4
Q switches on when a configurable cam is switched on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The cam parameters can be set in the block properties. In the Mode box you specify the day or days on which the on and off times are to be active. The choice of modes is as follows: •
Monday
•
Tuesday
•
Wednesday
•
Thursday
•
Friday
•
Saturday
•
Sunday
•
Monday to Friday
•
Monday to Saturday
•
Monday to Sunday (i.e. every day)
•
Saturday and Sunday
In the On Time and Off Time boxes, you enter the relevant times in the following range: any time between 00:00 and 23:59 You activate or deactivate the on and off times by means of the check boxes. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 0DQXDOHQWU\ Left clicking on the time boxes places the insertion point in the box so that you can type the figures for the hours and minutes directly on the keyboard. Figures entered manually in this way must not exceed the logical maximum figures for the boxes concerned. Otherwise LOGO!Soft Comfort returns an error message.
È Incorrect number for hours
È Incorrect number for minutes
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3URJUDPPLQJLQ/2*26RIW&RPIRUW ([DPSOHRISDUDPHWHUDVVLJQPHQW The output of the time switch is to be switched on between from 08:00 to 13:00 and from 15:00 to 18:30 on the days Monday to Saturday. It is also to be switched on between the hours of 11:00 and 15:00 on Sundays. This requires you to set 3 cams as follows:
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An input S sets the output Q and another input R resets the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ A latching relay is a simple binary memory cell. The signal at the output depends on the condition of the inputs and the previous condition of the output. Logic table for latching relay: 6
5
4
0 0 1 1
0 1 0 1
x 0 1 0
5HPDUNV Condition remains unchanged Reset Set Reset
3LQDVVLJQPHQW &RQQHFWLRQ
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Input 6
The input S (Set) sets the output Q to 1.
Input 5
The input R (Reset) resets the output Q to 0. If S and R simultaneously have the condition 1 then the output is reset (Reset takes precedence over Set).
Parameter3DU
This parameter is used to switch remanence on or off. Rem: Off = no remanence On = condition can be remanently stored
Output 4
LOGO!Soft Comfort Manual
Q switches on when S does and remains on until input R is set.
66
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The block’s remanence can be activated in the block properties. If remanence is active, the condition of the block output is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the block output is set to 0 when power is restored after a failure.
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A clock pulse with a definable period length is output at the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ The parameter T specifies the length of the on and off periods. The input (Q (Enable) switches the pulse generator on. The pulse generator sets the output to 1 for the period T and then sets it to 0 for the period T and continues repeating that cycle until the condition of input En changes to 0. The time specified for T must be ≥ 0.1 s. For T = 0.05 s and T = 0.00 s the time T is not defined. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input (Q
The input En (Enable) switches the pulse generator on (En=1) and off (En=0).
Parameter 7
T is the period for which the output is switched on/off.
Output 4
Q switches on and off cyclically in time with the pulse period T.
3DUDPHWHUDVVLJQPHQW The signal period parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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Following an input pulse, a definable timed period starts on expiry of which the output is set. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the condition at the input Trg changes from 0 to 1, a timed period Ta commences. If the elapsed time Ta reaches the time T, the output Q is set to 1. If the input Trg is switched again, it has no effect on Ta. The output and Ta are not reset to 0 until the condition at input R changes to 1. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the delay period
Input 5
The input R (Reset) resets the elapsed time for the ON delay and sets the output to 0. (Reset has priority over Trg)
Parameter7
T is the delay period after which the output is switched on (output signal is switched from 0 to 1).
Output 4
Q is switched on when the delay period T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The delay period parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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On receipt of an input pulse, an internal counter starts counting either up or down, depending on configuration. When the definable count value is reached, the output is set. The direction of the count is set by a separate input. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Every positive signal edge at the input Cnt either increases the internal counter value by one (Dir = 0) or decreases it by one (Dir = 1). If the internal counter value is greater than or equal to the value specified for Par, the output Q is set to 1. The Reset input R can be used to reset the internal counter value and the output to ’000000’. As long as R=1, the output remains set to 0 and the pulses at the input Cnt are not counted. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 5
The input R (Reset) resets the internal counter value and the output to zero (Reset has priority over Cnt).
Input &QW
The counter counts the number of changes of condition from 0 to 1 at the input Cnt (Count). A change of condition from 1 to 0 is not counted. Maximum count frequency at the input terminals: 5 Hz
Input 'LU
The input Dir (Direction) determines the counting direction as follows: Dir = 0: counter counts upwards Dir = 1: counter counts downwards
Parameter 3DU
Par is the count threshold value; when the internal counter reaches that value, the output is set.
Output 4
Q switches on when the count threshold value is reached.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The counter parameter Par can be set in the block properties to a value in the range 0 to 999999. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module. The block’s remanence can be activated in the block properties. If remanence is active, the internal counter value is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the counter value is set to 0 when power is restored after a failure.
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When the input is set, a definable timed period starts running. The output is set when the defined period has elapsed. 'LDJUDP
MI = Defined time period MN = Remaining period OT = Total elapsed time since last 1 signal at input Ral
'HVFULSWLRQRIIXQFWLRQ The hours counter monitors the input En. As long as the signal 1 is present at that input, the LOGO! monitors the elapsed time and the remaining period MN. The LOGO! displays those times in parameter assignment mode. When the remaining period MN reaches 0, the output Q is set to 1. The reset input R resets the output Q and the timer for the remaining period to the specified period MI. The internal counter OT continues to run. The reset input Ral resets the output Q and the timer for the remaining period to the specified period MI. The internal counter OT is reset to 0. /LPLWIRU27 When you reset the hours counter with the signal R, the accumulated time remains stored in OT. The maximum limit for the counter OT is 99999 h. If the hours counter reaches that figure, no more hours are recorded.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3LQDVVLJQPHQW &RQQHFWLRQ Input 5
'HVFULSWLRQ 5 Hours can be counted if Ral is not 1 5 Hours counter is stopped The input R (Reset) resets the output. The remaining period of the service interval MN is set to MN = MI. The previously elapsed time (OT operating time) remains stored.
Input (Q
En is the the monitored input. The LOGO! measures the length of time that that input is set ("1").
Input 5DO
5DO Hours can be counted if R is not 1 5DO Hours counter is stopped The input Ral (Reset all) resets the counter and the output to, i.e. Output Q = 0, Recorded operating time OT = 0 and Remaining period of service interval MN = MI.
Parameter 3DU: (MI)
0, specified service interval in hours.
Output 4
If the remaining period MN = 0 (see timing diagram), the output is set.
LOGO!Soft Comfort Manual
MI can be any number of hours in the range 0 to 9999.
74
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The service interval parameter Par can be set in the block properties to a value in the range 0 to 9999. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module. Remanence is permanently active on the hours counter. Following a power failure, the program continues from the values reached before the power failure.
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An input signal produces a signal of definable duration at the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the input Trg switches to the condition 1, the output Q immediately switches to the condition 1. At the same time, the elapsed time Ta starts running; the output remains set. If Ta reaches the time specified for T (Ta=T), the output Q is reset to 0 (pulse output). If the condition at the input Trg switches back from 1 to 0 before the specified time has elapsed, the output also immediately switches back from 1 to 0. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the wiping relay
Parameter 7
T is the period after which the output is switched off (output signal is switched from 1 to 0).
Output 4
Q switches on when Trg does and remains on until the time T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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The output is switched on or off depending on whether the frequency at the input is between two definable limits. 'LDJUDP
6:↑ is the on threshold. It can be any frequency in the range 0000 to 9999. 6:↓ is the off threshold. It can be any frequency in the range 0000 to 9999. *B7 is the time period in which the pulses at Fre are counted. G_T can be a period between 00.05s and 99.95s. 'HVFULSWLRQRIIXQFWLRQ The trigger measures the signals at the input Fre. The pulses received are recorded over a definable period G_T. If the frequency of the pulses received in the period G_T is greater than the on and the off thresholds, the output Q switches on. Q switches off again if the measured pulse frequency reaches or falls below the off threshold. 3LQDVVLJQPHQW &RQQHFWLRQ Input )UH
'HVFULSWLRQ The input whose frequency is to be measured is applied to the input Fre. Use
Parameter 3DU: (SW↑, SW↓, G_T)
•
Inputs I5/I6 (basic models 0BA1) or I11/I12 (LOGO!...L 0BA1) for higher frequencies (24 V inputs): max. 1 kHz
•
Any other input or circuit component for lower frequencies.
SW↑: ON threshold SW↓: OFF threshold G_T: time period over which the signal pulses applied are counted.
Output 4
LOGO!Soft Comfort Manual
Q switches on or off depending on whether the frequency is outside the limits SW↑ and SW↓ (see description below).
78
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The ON and OFF thresholds and the timer period can be set in the block properties. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
1RWH When using frequency inputs it should be noted that the inputs of the LOGO! should only be operated at frequencies of up to 5 Hz. The exception to that rule are the inputs I5/I6 on the basic models or the inputs I11/I12 on the L models which can take frequencies of up to 1 kHz if the inputs are applied directly to the trigger function.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
The output is controlled by a definable ON/OFF date. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Each year clock has an ON and an OFF time. At the ON time, the year clock switches the output on and at the OFF time, it switches the output off. The OFF date indicates the date on which the output is reset to 0. The LOGO! module is not susceptible year-2000 problems. &ORFNEXIIHU The internal clock of a LOGO! module continues to run if there is a power failure, i.e. it has a power buffer. How long the power buffer lasts depends on the ambient temperature. At an ambient temperature of 25°C the typical power buffer is 80 hours. 3LQDVVLJQPHQW &RQQHFWLRQ
'HVFULSWLRQ
Parameter &DP
The parameter Cam defines the ON and OFF times for the year clock.
Output 4
Q switches on when the configurable cam is switched on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The ON and OFF dates can be set in the block properties. A more convenient way of setting the date is provided by the Calendar button. This opens a dialog box with buttons for selecting the day and month. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
0DQXDOHQWU\ Left clicking on the month and day boxes places the insertion point in the box so that you can type the figures for the month and day directly on the keyboard. Figures entered manually in this way must not exceed the logical maximum figures for the boxes concerned. Otherwise LOGO!Soft Comfort returns an error message.
È Incorrect figure for month
È Incorrect figure for day
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3URJUDPPLQJLQ/2*26RIW&RPIRUW ([DPSOHRISDUDPHWHUDVVLJQPHQW The output of a LOGO! module is to be switched on every year between 1 March and 4 April and from 7 July to 19 November. For this you require 2 blocks each of which is configured for one of the ON periods. The outputs are then linked by an OR block.
Place two year-clock special function blocks on your Drawing Board and configure them as shown.
Link the blocks with an OR basic function block. The output of the OR block switches on if either of the two year clocks is switched on.
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The output pulse wave form can be modified by means of the definable pulse duration/interval ratio. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ The pulse duration and pulse interval can be set by means of the parameters TH and TL. The cursor keys can be used to set the time scale divisions to seconds, minutes or hours. Both parameters have the same time basis, they can not be set individually to different bases. The input INV allows the output to be inverted. The input INV only negates the output if the block is activated by EN. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input (Q
The input En (Enable) switches the asynchronous pulse generator on and off.
Input ,QY $
The input Inv is used to invert the output signal of the asynchronous pulse generator when active.
Parameter 3DU
The pulse duration TH and pulse interval TL can be set.
Output 4
Q switches on and off cyclically on the basis of the pulse timing parameters TH and TL.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The pulse timing parameters TH and TL can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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([DPSOH$SSOLFDWLRQV
([DPSOH$SSOLFDWLRQV 3UDFWLFDO([DPSOH +RXVHKROG:DWHU3XPS ,QWURGXFWLRQ The household water pump example application is intended to provide new LOGO! users with a practical programming example that can be followed through step by step. In contrast with the tutorial, the use of the functions learned about is illustrated step by step using an example of a practical application.
'HVFULSWLRQRI7DVN
$SSOLFDWLRQ Nowadays, private households are more and more frequently making use of rainwater alongside the mains domestic water supply. This saves money and helps protect the environment. Rainwater can be used for the following, for example: •
washing clothes,
•
watering the garden,
•
watering indoor plants,
•
washing the car or
•
flushing the toilet.
With a suitable system, rainwater can be collected and used for those types of purposes instead of the mains water.
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([DPSOH$SSOLFDWLRQV 'HVFULSWLRQRIV\VWHP The rainwater is collected in a large water butt. From the water butt it is pumped by a pumping station into a piping system provided for it. From there it can be drawn off in the same way as the normal household water supply. If the water butt should run dry, it can be topped up with mains water. A program is to be created which meets the requirements of a control system for such an installation. The sketch below illustrates how such a rainwater supply system works: Rainwater inlet K4
Mains water inlet
Pressure switch S1
PLC in the distributor box Large water butt for rainwater
Pump M1 S2 Mains water inlet off
S3
Mains water inlet on Trockenlaufschutz Aus
S4
Run-dry prevention on
Connection for household water
5HTXLUHPHQWVRIWKHFRQWUROV\VWHP •
The system must be capable of supplying water at all times. If necessary, the control system must switch over to mains water if the rainwater runs out.
•
The system must not allow rainwater to enter the mains supply when switching over to mains water.
•
It must not be possible to switch on the pump when there is not enough water in the rainwater butt (run-dry prevention system).
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([DPSOH$SSOLFDWLRQV
&RQYHQWLRQDO6ROXWLRQ A pump and a solenoid valve are controlled by means of a pressure switch and 3 float switches that are fitted in the rainwater butt. The pump must be switched on when the pressure in the cylinder falls below the minimum level. Once the operating pressure has been reached, the pump is switched off again following a short overrun period. The overrun period prevents the pump continuously cutting in and out if water is drawn off for a prolonged period. L1
S3
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Overrun period
Run-dry prevention
Mains water inlet
,PSOHPHQWDWLRQZLWK/2*2
$GGLWLRQDOHTXLSPHQW In addition to a LOGO! module, you require only the pressure switch and the float switches for controlling the pump. If you are using a 3-phase AC motor, you must use a master contactor for switching the pump. On systems using single-phase AC pumps, you must fit a contactor if the AC pump requires a higher current than can be switched by the output relay Q1. The power of a solenoid valve is so low that it can normally be controlled directly. 7HUPLQDOFRQQHFWLRQGLDJUDP L1 S1 p<
S2
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([DPSOH$SSOLFDWLRQV )XQFWLRQGLDJUDP The function diagram shows how you can connect up the control system for the pump and the solenoid valve. Its layout corresponds to that of the current flow diagram. Pressure switch
Float switch Run-dry prevention off
I3
Float switch Run-dry prevention on
I4
I1 T = 20 s
Pump
Q1 56
Float switch Mains water inlet off Float switch Mains water inlet off
I3
56
Mains water inlet
Q2
I2
$GGLWLRQDOSRVVLELOLWLHV You also have the possibility of incorporating additional functions for specific applications that would only be possible with the inclusion of extra equipment if you were using conventional technology, e.g.:
•
Pump to be enabled only at specific times, e.g. only in the summer or between particular hours of the day
•
Indication of imminent or existing shortage of water
•
Reporting of system faults
3URJUDPPLQJ
(QWHULQJWKHSURMHFWGDWD Once you have planned your project, you can start to create it in LOGO!Soft Comfort. The first step is to enter the project data in the Properties dialog box, assuming you don’t prefer to start programming right away.
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([DPSOH$SSOLFDWLRQV When working through the succeeding steps, you should remember to save your control program at regular intervals. You may want to open a revised version at some time to test out different possibilities. ,QVHUWLQJWKHIXQFWLRQEORFNV The next step is to place the required function blocks on the Drawing Board. When doing so, remember that apart from the basic and special functions, you also require blocks for the inputs and outputs. At this stage of the process it is sufficient to place the blocks roughly in the position they will need to be in when you connect them up. Precise positioning will be done at a later stage.
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([DPSOH$SSOLFDWLRQV 6HOHFWLQJWKHIXQFWLRQEORFNV Now connect up the blocks according to the plan you made earlier. When connecting up the blocks you should join the connecting line to the output of a block first and then to the input of the destination block. The advantage of this is that when you are connecting to the input pin of a function block the name of the selected pin is displayed. This is particularly helpful with the various pins on the special function blocks.
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([DPSOH$SSOLFDWLRQV 7LG\LQJXSWKH'UDZLQJ%RDUG Some of the connecting lines run over the top of the blocks. As it is at present, the control program layout is not particularly clear. In order to "tidy up" the Drawing Board, you now select connecting lines and, if necessary, blocks and move them around or align them to obtain the best layout for the control program.
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([DPSOH$SSOLFDWLRQV 2SWLPL]LQJWKHOD\RXW If you are left with undesirable but unavoidable intersections between connecting lines, the offending lines can be split using the Split/Reconnect tool. This further improves the clarity of the diagram as it prevents difficulties interpreting the circuit. Otherwise it is difficult in LOGO!Soft Comfort to distinguish between connecting line intersections and junctions.
The program is now finished. Check once again that all connections have been made and set your parameters as you require.
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([DPSOH$SSOLFDWLRQV
6LPXODWLRQ
6WDUWLQJDQGDVVHVVLQJWKHVLPXODWLRQ To test out the control program, you switch to simulation mode. When you start the simulation, LOGO!Soft Comfort checks the program and returns a message that you can view by opening the Message Window. The statistics and any error messages are shown. It also lists the LOGO! models that you can use to implement your project. However, it is not absolutely essential to open the Message Window. The minimum LOGO! model required to run your program is also displayed at the bottom left of the screen on the Status Bar.
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([DPSOH$SSOLFDWLRQV 3URJUDPWHVW Although you already know that your program will run on a LOGO! module, you still have to check that it will actually work as you intend it to. You may also want to adjust certain parameters. You can try out different input values, check the behavior of the system in the event of a power failure and compare your calculations or expectations with the actual behavior of the outputs. The characteristics of the float switches and the pressure switch are the same as for keys. If, however, you wish to simulate the behavior of your circuit, for testing purposes simply change the function of the inputs from keys to switches.
If everything runs as expected, or when you have made any final corrections necessary, you can set about documenting your program.
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([DPSOH$SSOLFDWLRQV
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3URJUDPFRPPHQWV Now add comments to your program using the Label tool. Give the inputs and outputs descriptions and make your circuit easy to follow. You do not have to have the terminal descriptions displayed on the screen. Nevertheless, you should make use of the facility so that you can print out a terminal list at some point if you wish.
Pressure switch
Pump
Float switch Run-dry prevention off Mains water inlet off
Float switch Mains water inlet off Mains water inlet Float switch Run-dry prevention on
$UFKLYLQJ Before you download your program, you should save it again. Choose the relevant command from the menu and enter a name for the program and the path to which you want to save it. 3ULQWLQJRXWWKHSURJUDP A printout of the program can be very helpful for planning modifications on paper or if you wish to show the program to friends or colleagues when there is no PC available. The print options allow you to specify the print format and which details are to be omitted from the printed version.
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([DPSOH$SSOLFDWLRQV
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([SRUWLQJDQGLPSRUWLQJ You may also need a version of your program in LOGO!Soft format or perhaps you want to combine a program created in LOGO!Soft with your LOGO!Soft Comfort program. If so, you can use the import and export functions to carry out the necessary program conversions. You import a program by opening the file. 8SORDGLQJDQGGRZQORDGLQJ Last of all, you download your program to a suitable LOGO! module and then connect the module up. Connect the LOGO! module to the consumer units in your project. Within a very short space of time, you have now created a control program in LOGO!Soft Comfort which would have required much more time and effort using the conventional method.
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([DPSOH$SSOLFDWLRQV
([DPSOH3URJUDPV ,QWURGXFWLRQ To give you an idea of how versatile LOGO! modules are, we have put together a collection of other applications in addition to the domestic water pump application described in detail above. The examples referred to here are taken from the LOGO! manual. In the LOGO! manual they are described in more detail, in other words showing the conventional solution and comparing it with the simpler solution using a LOGO! module. Here in the LOGO!Soft Comfort manual, we have given a description of the task followed by the finished solution created in LOGO!Soft Comfort. The control programs illustrated are also included on the LOGO!Soft Comfort CD-ROM. 1RWH The LOGO! applications are provided free of charge to our customers. The examples described within them are provided without guarantee and for the purposes of general information as to the possible applications of LOGO! modules and the LOGO!Soft Comfort software. Customer-specific solutions may differ from them. The user is responsible for ensuring that the system operates properly. We would also draw your attention to to the need to comply with any applicable local standards and system-related installation regulations.
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5HTXLUHPHQWVIRUVWDLUZHOOOLJKWLQJ The basic requirements for a stairwell lighting system in an apartment block are as follows: •
When someone is using the stairs, the stairwell lights should be on.
•
If no-one is in the stairwell, the lights should go out in order to save energy.
&RQYHQWLRQDOVROXWLRQ Conventionally, there have been two ways to control such a lighting system as follows: •
Pulse relay: when the lights are off, pressing any of the push buttons switches the lights on. When the lights are on, pressing any of the push buttons switches the lights off again. Disadvantage: people frequently forget to switch the lights off.
•
Automatic stairwell lighting timer: when any one of the push buttons is pressed, the lights are switched on. When a preset time has elapsed, the lights switch off again automatically. Disadvantage: you can’t keep the lights switched on for an extended period. The permanent on switch is usually on the stairwell lighting timer unit which may be difficult or impossible to gain access to.
The wiring for the two lighting systems is identical.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWVROXWLRQ You can use a LOGO! module to replace the stairwell lighting timer or the pulse relay. And you can implement both functions (timed OFF delay and pulse relay) in a single unit. What is more, you can incorporate extra functions without making any alterations to the wiring. In our example program we have combined the advantages of both the pulse relay and the automatic stairwell lighting timer as follows: •
Press push button È lights come on then go off again after the preset delay of 6 minutes (OFF delay)
•
Press push button twice È lights come on and stay on indefinitely (the latching relay is set by the pulse relay)
•
Press and hold push button for 2 seconds È lights go off (ON delay switches lights off - whether on indefinitely or for timed period - in the circuit this branch is used twice)
The external wiring for the lighting system using a LOGO! module is no different from the conventional method of wiring a stairwell lighting system. Only the automatic lighting timer/pulse relay is replaced. /2*26RIW&RPIRUWSURJUDP The control program shows the circuit for an input and corresponding output. You use the OFF delay B02 to set the length of the timed "lights on" period and blocks B03 and B08 to set the time the push button has to be held to switch the lights off. Lights on/off
&RQYHQLHQFHVZLWFK "Lights on" period
Light
You can duplicate the circuit for the remaining inputs and outputs. For example, you could replace 4 automatic lighting timers or 4 pulse relays with just one LOGO! module.
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([DPSOH$SSOLFDWLRQV
9HQWLODWLRQ6\VWHP
5HTXLUHPHQWVIRUYHQWLODWLRQV\VWHP The purpose of a ventilation system is either to bring fresh air into a room or to extract stale air from a room. Let us consider the following example arrangement: •
A room contains an extractor fan and a fresh-air fan.
•
Both fans are monitored by a flow sensor.
•
The pressure in the room must not be allowed to rise above atmospheric pressure.
•
The fresh-air fan must only be switched on provided reliable functioning of the extractor fan is signalled by the flow sensor.
•
A warning lamp indicates if one of the fans fails.
&RQYHQWLRQDOVROXWLRQ The fans are monitored by flow sensors. If, after a short delay, no air flow is registered, the system is switched off and a fault reported which can be reset by pressing the OFF button. Monitoring of the fans requires an analyzer circuit with several switching devices in addition to the flow sensors. The analyzer circuit can be replace by a single LOGO! module. /2*26RIW&RPIRUWVROXWLRQ If you use a LOGO! module you require less switchgear. That saves you installation time and space in the control cabinet. Under certain circumstances it may even allow you to use as a smaller control cabinet. With a LOGO! module you can also stagger shut off of the fans after the system is switched off.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWSURJUDP The system is switched on and off at the inputs I1 and I2. The fans are connected to outputs Q1 and Q2 and the inputs I3 and I4 are connected to the flow sensors. Blocks B07 and B10 are used to set the times after which the flow sensors must send a signal to the fault output Q3. 9HQWLODWLRQ&RQWURO6\VWHP ON switch
Extractor fan
OFF switch Fresh-air fan Flow sensor for stale air
Fault
Flow sensor for fresh air
By negating output Q3 you can also use an output Q4 as a message output. Relay Q4 only drops out if the mains power fails or if there is a fault in the system. The output can then be used for a remote fault indicator.
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5HTXLUHPHQWVIRUJDWHFRQWUROV\VWHP The entrances to factory grounds are frequently secured by sliding gates. Those gates are only opened when vehicles need to enter or leave the factory grounds. The gate controls are operated by the porter. •
The sliding gate is opened and closed by the operation of a push button in the gatehouse. The porter is able to monitor the operation of the gate at the same time.
•
The sliding gate is normally fully opened or closed. However, movement of the gate can be halted at any time.
•
A flashing light is activated 5 seconds before the gate is operated and while the gate is in motion.
•
A safety pressure strip ensures that persons are not injured or objects trapped and damaged when the gate shuts.
&RQYHQWLRQDOVROXWLRQ There is a wide variety of control systems that are used for operating automatic gates. The OPEN and CLOSE buttons move the gate in the appropriate direction provided it is not already moving in the other direction. Movement of the gate is halted by the STOP button or the relevant limit switch. /2*26RIW&RPIRUWVROXWLRQ In addition to the facilities of the conventional control system, the LOGO! module solution usas a safety strip which stops the gate closing. 5 seconds before the gate is opened or closed, a flashing light is activated which signals that the gate is about to start moving and continues to flash until the gate has stopped moving. In contrast with the conventional solution, the LOGO! module solution of course allows modifications to be made to the control system easily and economically.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWSURJUDP The gate is opened and closed by means of push buttons I1 and I2 and a push button connected to I3 can be used to stop the gate. The limit switches for the gate are connected to the inputs I4 and I5 and the safety strip to I6. The motor for moving the gate is controlled via outputs Q1 and Q2 and the flashing light is connected to Q3. Blocks B05 and B07 are used to set the delay period between when the push button is pressed and when the gate starts moving. Block B16 is used to set the flashing frequency of the warning light.
)DFWRU\*DWH&RQWURO6\VWHP Safety strip
Flashing light
Push button for OPEN
Open
Push button for STOP
Close Gate is open
Push button for CLOSE
Gate is closed
Our additional feature opens the gate again automatically if the safety strip is actuated.
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([DPSOH$SSOLFDWLRQV
8QFRLOHU
5HTXLUHPHQWVIRUXQFRLOHU An uncoiler feeds a coiled strip of sheet metal into a punch. The basic requirements for an uncoiler are as follows: •
The metal strip fed in must not be allowed to curl
•
The tension on the metal strip must not exceed a specified maximum level
•
If the tension on the metal strip is too great, the punch must be switched off
&RQYHQWLRQDOVROXWLRQ A key-operated switch is used to change between automatic and manual operation. In manual mode, the uncoiler can be switched on and off with a push button. Three more switches monitor the tension on the metal strip and switch the punch off if it is too taut. /2*26RIW&RPIRUWVROXWLRQ With a LOGO! module, the necessary circuit can be considerably simplified by virtue of the fact that connection of the required switches, warning lamps and master contactor to the LOGO! is all that is required. Using a LOGO! module, you need less switchgear and less wiring. That saves you installation time and space in the control cabinet. Under certain circumstances it may even allow you to use as a smaller control cabinet. /2*26RIW&RPIRUWSURJUDP Inputs I1 to I3 are used to connect the controls for the system. The system’s internal switches for checking the metal strip are connected to inputs I4 to I6. Outputs Q1 to Q3 are used to control the master contactor for the uncoiler motor and the enabling signal for the punch and the warning lamp.
8QFRLOHU Manual mode ON
Manual uncoiler operation
Uncoiler motor on
Strip is slack
Strip is taut
Automatic mode on Punch off switch
Indicator lamp for automatic mode
Enable punch
Other additional functions or the use of the free inputs and outputs for another system can be easily be implemented.
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,QGH[
,QGH[ $ Actual values ......................................................... 19 Alignment .............................................................. 34 AND....................................................................... 53 Applications, other................................................. 97 Archiving................................................................ 95 Archiving programs ............................................... 19 ASi input ................................................................ 50 ASi output.............................................................. 51 Assigning parameters to function blocks................. 8 Asynchronous pulse generator ............................. 83
% Basic Functions tool .............................................. 24 Block comments .................................................... 14 Block numbering...................................................... 8 Block numbers....................................................... 49 Block Properties .................................................... 33 Block properties dialog box ................................... 33 Blocks.................................................................... 49 Bring To Front ....................................................... 32
& Choice of modes ................................................... 23 Clipboard, internal ................................................. 26 Clock buffer ........................................................... 80 Comments tab ................................................. 14, 30 Connecting line intersections ................................ 12 Constants and Terminals tool ............................... 24 Contents of the Clipboard ..................................... 32 Convenience switch .............................................. 97 Copy ...................................................................... 31 Copy selected object ............................................. 22 Counter.................................................................. 71 Creating a program using toolbars.......................... 6 Cut......................................................................... 31 Cut selected object................................................ 22
' Data entry, manual .......................................... 64, 81 Date, current.......................................................... 40 Date, set ................................................................ 40 Determine LOGO! ................................................. 40 Disconnecting the power....................................... 18 Drawing Board....................................................... 20 Drawing Board, description ..................................... 5
( Editing connecting lines ........................................ 11 Editing functions .................................................... 31 Editing objects ....................................................... 11 Enclosing objects .................................................. 10 Entering project data ............................................. 88 Entering terminal descriptions............................... 32 Example application .............................................. 85 Exit ........................................................................ 30
LOGO!Soft Comfort Manual
Export.....................................................................28 Exporting and importing .........................................96
) Factory gate ........................................................ 101 File extension.........................................................21 Fixed signal levels..................................................52 Flag, status ............................................................18 Flags ......................................................................52 Font ........................................................................33 Font color ...............................................................33 Font size ................................................................33 Font style ...............................................................33 Formatting options .................................................33 Frequency inputs ...................................................79 Frequency trigger...................................................78 Function blocks, availability .....................................8 Function blocks, memory requirements.................47 Function diagram ...................................................88
* General properties .................................................29
+ high ........................................................................52 Hours counter ........................................................73 Household water pump ..........................................85
, Input terminals .......................................................50 Input, function ........................................................17 Inputs .............................................................. 16, 50 Inputs for ASi .........................................................50 Inserting function blocks ........................................89
/ Label tool ........................................................ 13, 23 Labels ....................................................................13 Labels, bound and unbound ..................................13 Language setting ...................................................41 Last digits of order number ....................................45 Latching relay.........................................................66 LGO........................................................................28 Limit for OT ............................................................73 Link tool..................................................................23 Linking function blocks, help with ............................9 Linking function blocks, procedure ..........................9 Linking function blocks, rules .................................10 LOGO! applications................................................97 LOGO! Innovation ..................................................45 LOGO! logic module ................................................4 LOGO! model.........................................................16 LOGO! models .......................................................45 LOGO!, 1st generation...........................................45 LOGO!, 2nd generation..........................................45 LOGO!Soft ........................................................ 4, 28 Low ........................................................................52
104
,QGH[ LSC ....................................................................... 21
0 Manual................................................................... 44 Memory area ......................................................... 47 Memory, maximum usable .................................... 47 Memory, required .................................................. 47 Menu bar ..................................................... 6, 20, 25 Message window................................................... 36 Message Window .................................................. 15
1 NAND .................................................................... 54 Nesting depth ........................................................ 48 New ................................................................. 21, 26 NOR ...................................................................... 55 NOT....................................................................... 54 Nudging ................................................................. 11 Number of pages for creating program ................. 41
2 OFF delay.............................................................. 58 ON delay ............................................................... 56 Open................................................................ 21, 27 Opening a program ............................................... 19 Optimizing diagram view ....................................... 10 Optimizing layout................................................... 92 Options: General ................................................... 41 Options: Interface .................................................. 43 Options: Print......................................................... 42 Options: Screen..................................................... 42 OR ......................................................................... 53 or number 0BA1 .................................................... 45 Order number 0BA0 .............................................. 45 Output block .......................................................... 47 Output terminals .................................................... 51 Output, status ........................................................ 18 Outputs.................................................................. 51 Outputs for ASi ...................................................... 51 Overview of user interface .................................... 20
3 Page breaks .......................................................... 12 Page settings......................................................... 28 Page Setup............................................................ 28 Parameter assignment windows ........................... 19 Parameters, displaying current values .................. 19 Paste ..................................................................... 31 Paste object........................................................... 22 Path and file name ................................................ 22 Path, to save program to ....................................... 19 PC connecting lead ............................................... 38 PDF file reader ...................................................... 44 Pin designation........................................................ 9 Positioning............................................................. 11 Positioning function blocks...................................... 7 Power failure ......................................................... 18 Print ....................................................................... 29 Printing .................................................................. 95 Program comments ............................................... 95 Program conversions ............................................ 96 Program path......................................................... 47
LOGO!Soft Comfort Manual
Program paths, overlong........................................48 Program settings....................................................45 Program simulation ................................................14 Program test ..........................................................94 Properties of program to be created ......................21 Pulse relay .............................................................60
5 Recursion...............................................................10 Release date..........................................................44 Remanence characteristics....................................18 Resources..............................................................15 Restart characteristics ...........................................18 Retentive ON Delay ...............................................69
6 Save ................................................................ 22, 27 Save As..................................................................28 Scroll bars ..............................................................20 Select All ................................................................32 Selecting function blocks .................................. 7, 90 Selecting objects....................................................10 Selection tool .................................................. 10, 23 Send To Back ........................................................32 Set Clock................................................................40 Set Clock: entering date/time manually .................40 Signal feedback .....................................................48 Simulation ..............................................................40 Simulation parameters ...........................................41 Simulation tool .......................................................24 Simulation, assigning parameters..........................19 Simulation, starting ................................................14 Solution, conventional............................................87 Solution, implementation with LOGO!....................87 Special functions dependent on LOGO! models....46 Special Functions tool............................................24 Split/Reconnect button...........................................11 Split/Reconnect tool ...............................................23 Splitting links, advantages .....................................12 Splitting links, procedure........................................11 Standard toolbar ............................................... 6, 21 Starting and assessing simulation .........................93 Statistics tab...........................................................30 Status bar.................................................... 6, 20, 37 Status display.........................................................16 Symmetrical pulse generator .................................68
7 Terminal block........................................................47 Terminal Description ..............................................32 Terminals ...............................................................49 Text boxes, bound and unbound ...........................13 Tidying up the Drawing Board ...............................91 Time switch ............................................................62 Time switch, parameter assignment example .......65 Toolbars .......................................................... 20, 36 Tools menu ............................................................37 Tools toolbar ..................................................... 6, 23 Tooltips ..................................................................37 Transfer..................................................................38 Transfer: LOGO! 3&...........................................39 Transfer: PC /2*2...........................................38 Types of text object................................................42
105
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8 Uncoiler ............................................................... 103 Undo...................................................................... 31 Up/down counter ................................................... 71 Uploading and downloading.................................. 96 Use of memory ...................................................... 47 User interface, elements ......................................... 6
9 Ventilation system ................................................. 99 Version number ..................................................... 44 View settings ......................................................... 34 Voltage levels ........................................................ 52
; XOR .......................................................................54
< Year clock ..............................................................80 Year clock, parameter assignment example..........82
= Zoom ......................................................................35 Zoom factor............................................................35 Zoom In ..................................................................35 Zoom Out ...............................................................35
: Wiping relay/pulse output...................................... 76
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*HWWLQJ6WDUWHG %ULHI*XLGHWR&UHDWLQJ&RQWURO3URJUDPV 2.1.1 Description of User Interface............................................................................................. 5 2.1.2 Creating Programs ............................................................................................................ 6 2.1.3 Editing the Diagram......................................................................................................... 10 2.1.4 Documenting the Program .............................................................................................. 13 *HWWLQJ6WDUWHG 6LPXODWLQJD&RQWURO3URJUDP 2.2.1 Starting the Simulation .................................................................................................... 14 2.2.2 Simulating the Control Program ...................................................................................... 16 2.2.3 Archiving Programs......................................................................................................... 19
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'HVFULSWLRQRI$YDLODEOH%XWWRQV 3.2.1 Standard Toolbar ............................................................................................................ 21 3.2.2 Tools Toolbar .................................................................................................................. 23 'HVFULSWLRQRI0HQX%DU 3.3.1 File Menu ........................................................................................................................ 26 3.3.2 Edit Menu........................................................................................................................ 31 3.3.3 Format Menu................................................................................................................... 33 3.3.4 View Menu ...................................................................................................................... 34 3.3.5 Tools Menu ..................................................................................................................... 37 3.3.6 Help Menu....................................................................................................................... 44
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&RQVWDQWVDQG7HUPLQDOV &R 4.4.1 Inputs .............................................................................................................................. 50 4.4.2 Inputs for ASi .................................................................................................................. 50 4.4.3 Outputs ........................................................................................................................... 51 4.4.4 Outputs for ASi................................................................................................................ 51 4.4.5 Flags ............................................................................................................................... 52 4.4.6 Fixed Signal Levels ......................................................................................................... 52
LOGO!Soft Comfort Manual
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&RQWHQWV %DVLF)XQFWLRQV %) 4.5.1 AND ................................................................................................................................ 53 4.5.2 OR................................................................................................................................... 53 4.5.3 NOT ................................................................................................................................ 54 4.5.4 XOR ................................................................................................................................ 54 4.5.5 NAND.............................................................................................................................. 54 4.5.6 NOR ................................................................................................................................ 55 6SHFLDO)XQFWLRQV 6) 4.6.1 ON Delay ........................................................................................................................ 56 4.6.2 OFF Delay....................................................................................................................... 58 4.6.3 Pulse Relay..................................................................................................................... 60 4.6.4 Time Switch .................................................................................................................... 62 4.6.5 Latching Relay ................................................................................................................ 66 4.6.6 Symmetrical Pulse Generator ......................................................................................... 68 4.6.7 Retentive ON Delay ........................................................................................................ 69 4.6.8 Up/Down Counter............................................................................................................ 71 4.6.9 Hours Counter................................................................................................................. 73 4.6.10 Wiping Relay/Pulse Output ............................................................................................. 76 4.6.11 Frequency Trigger........................................................................................................... 78 4.6.12 Year Clock ...................................................................................................................... 80 4.6.13 Asynchronous Pulse Generator ...................................................................................... 83
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3UDFWLFDO([DPSOH +RXVHKROG:DWHU3XPS 5.1.1 Description of Task ......................................................................................................... 85 5.1.2 Conventional Solution ..................................................................................................... 87 5.1.3 Implementation with LOGO!............................................................................................ 87 5.1.4 Programming .................................................................................................................. 88 5.1.5 Simulation ....................................................................................................................... 93 5.1.6 Documentation ................................................................................................................ 95 5.1.7 Program Transfer ............................................................................................................ 96 ([DPSOH3URJUDPV 5.2.1 Convenience Switch........................................................................................................ 97 5.2.2 Ventilation System .......................................................................................................... 99 5.2.3 Factory Gate ................................................................................................................. 101 5.2.4 Uncoiler......................................................................................................................... 103
LOGO!Soft Comfort Manual
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:KDWLV/2*26RIW&RPIRUW" /2*2DQG/2*26RIW 7KHORJLFPRGXOH The Siemens universal logic module LOGO! has been on the market since 1996 and is enjoying growing popularity all over the world. Thanks to the integration of a large number of functions at an exceptionally economical price compared with conventional programmers, the LOGO! is able to provide solutions for a wide variety of household, industrial and engineering tasks. :LGHUDQJHRIDSSOLFDWLRQV The choice of models in the LOGO! range makes it extremely versatile at adapting to a vast range of tasks. Its ASi bus compatibility means that the LOGO! can also provide solutions for small-scale automation tasks. /2*26RIWSURJUDPPLQJVRIWZDUH LOGO!Soft is a program which simulates a configured LOGO! unit on a PC. The programming software enables control programs to be created, tested, edited, archived and printed out on a PC. This offline programming facility considerably improves the user-friendliness of the LOGO!. The user interface provides a graphical representation of the unit being programmed. Once created, programs can be transferred between the PC and the LOGO!.
/2*26RIW&RPIRUW /2*26RIW&RPIRUWSURJUDPPLQJVRIWZDUH LOGO!Soft Comfort makes creating control programs easier, more efficient and more manageable than in the past. The process of creating a program involves positioning and linking up program elements on a "drawing board". One particularly user-friendly feature is the offline program simulation facility which enables simultaneous display of multiple special function statuses and professional documentation of the programs created. :K\GRZHQHHG/2*26RIW&RPIRUW" Certain user groups, among them planning and technical consultants and users with PC/CAD experience, expect the LOGO! to offer a programming interface for their equipment which does not necessarily simulate operation of the unit but chiefly increases the ease of programming and offers good facilities for testing and documentation. LOGO!Soft Comfort provides Windows users with a tool which provides an even more straightforward and convenient facility for producing control programs on a PC and printing out detailed and clearly laid out circuit documentation. 6SHFLDOIHDWXUHVRI/2*26RIW&RPIRUW •
Easy and convenient production of control programs
•
Comprehensive documentation of control programs
•
Comprehensive print functions
•
Simulation
LOGO!Soft Comfort Manual
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minimizes
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7XWRULDO
7XWRULDO %DVLFUHTXLUHPHQWVIRUZRUNLQJZLWK/2*26RIW&RPIRUW It is assumed that you are familiar with the basics of the Windows operating system and creating function diagrams. In order to be able to transfer programs you will also require the connecting lead for connecting the PC with the LOGO! module via the PC’s serial interface.
*HWWLQJ6WDUWHG %ULHI*XLGHWR&UHDWLQJ&RQWURO3URJUDPV ,QWURGXFWLRQ In order to illustrate the basic functions of LOGO!Soft Comfort, we will demonstrate the creation of a simple control program and then simulate it on the PC. The individual functions are fully and comprehensively explained in the succeeding chapters of this manual. Finally, the last chapter of the manual presents a complete, working example application in LOGO!Soft Comfort. That chapter also deals with the subjects of preparation, transfer and archiving.
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Menu bar Standard toolbar
Tools toolbar
Drawing Board
Scroll bars Status bar
'UDZLQJ%RDUG When you first start the program, the LOGO!Soft Comfort user interface is displayed. The largest area of the screen is occupied by the space for creating circuit diagrams. That is the Drawing Board where the symbols and links for the control program are arranged.
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7XWRULDO (OHPHQWVRIXVHULQWHUIDFH In order to keep even large circuits manageable, there are scroll bars at the bottom and on the right of the screen which can be used to scroll the diagram horizontally and vertically. 7RROVWRROEDU On the left is the Tools toolbar. The buttons on this toolbar are used to switch to different programming modes in order to be able to create or edit a program quickly and easily. 6WDQGDUGWRROEDU Above the Drawing Board is the Standard toolbar. This contains buttons for creating a new program, opening an existing program and saving the current program as well as for cutting, copying and pasting circuit objects and uploading or downloading programs to or from the LOGO! module. 0HQXEDU Above the Standard toolbar is the Menu bar. The Menu bar menus contain various commands for editing and managing your control programs. There are also functions for entering default settings and transferring programs. 6WDWXVEDU At the bottom of the application window is a Status bar. This displays information about the active tool, the program status and the current zoom factor.
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(QWHULQJDQHZSURJUDP When you start LOGO!Soft Comfort for the first time, you can start creating a new program right away. If you have used LOGO!Soft Comfort before and there are still circuit components from a pervious session on your Drawing Board, you click the "New" button on the Standard toolbar to start a new control program. È 1HZ The previously active program disappears and you can start creating a new control program on a blank Drawing Board. &DXWLRQ don’t forget to save your old control program first if you want to return to it again later on. &UHDWLQJDSURJUDPXVLQJWKHWRROEDUV In our introduction to creating circuit diagrams in LOGO!Soft Comfort, we will only need to use the buttons on the two toolbars. For more detailed information please refer to the succeeding chapters in this manual. To choose a button, you point to it with the mouse pointer and then click the left mouse button. The selected button then appears depressed. È
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7XWRULDO 6HOHFWLQJIXQFWLRQEORFNV The first step in creating a circuit diagram is selecting the function blocks that are required for the intended circuit. Whether you start with inputs and outputs, the basic functions or the special functions is entirely up to you. The &RQVWDQWV button on the Tools toolbar provides access to the constants and terminals, i.e. a selection of inputs and outputs and fixed signal levels. The %DVLF)XQFWLRQV button provides a choice of Boolean algebra functions, i.e. the simplest digital logical operation objects. To obtain the choice of special functions available, you click the 6SHFLDO)XQFWLRQV button. È &RQVWDQWV7HUPLQDOV È %DVLF)XQFWLRQV È 6SHFLDO)XQFWLRQV 3RVLWLRQLQJIXQFWLRQEORFNV Click the button for the group of functions that contains the block you require. All the function blocks of the selected function group are then displayed in a row to the right of the Standard toolbar.
You can then place any of those functions on the Drawing Board simply by clicking on the Drawing Board in the desired position. The function on the extreme left is selected by default but you can select any of the others by clicking them with the mouse.
It is not necessary to position the objects precisely at this point. When the blocks are linked to one another and when adding labels to the circuit, you will want to move the blocks again to achieve the best layout for your control program. Therefore, very precise positioning and alignment of the blocks immediately they are placed in position is somewhat unnecessary.
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7XWRULDO %ORFNQXPEHULQJ The block numbers can not be altered. For basic functions and special functions, block numbering is performed automatically in the order that the blocks are positioned on the diagram. In the case of constants and terminal blocks, instead of a block number, the relevant LOGO! terminal description or a simple description of the block is shown. In addition, inputs, outputs and flags can be assigned other block descriptions using labels. The signal blocks for signal levels high and low do not have block numbers. $VVLJQLQJSDUDPHWHUVWRIXQFWLRQEORFNV When you double-click function blocks, a dialog box for entering the block properties appears. In the case of all special function blocks and some basic function blocks, in addition to the Comments tab there is also one or more tabs for parameters. This is where you specify values or settings to be adopted by the function block in your circuit.
Parameter
You can tell special function blocks simply by the fact that the current parameter values are shown in green on the left of the block. $YDLODELOLW\RIIXQFWLRQEORFNV If you insert more functions in your circuit diagram than the function quantity structure permits, the functions that can no longer be used are shown in gray. If the currently selected function can no longer be used, the first function still usable immediately becomes the selected function.
In LOGO!Soft Comfort, more functions can be used than can be implemented on earlier LOGO! modules. As a result, creation of programs is given absolute priority. If, when simulating a control program, you receive a message to the effect that a circuit can not be implemented with the quantity structure of a LOGO! module, you should first try to make full use of the options offered by the LOGO! in terms of its wide variety of functions. For example, you could try replacing memory-intensive function blocks with a combination of multiple function blocks that in total requires less memory. 6HH&KDSWHU0HPRU\DQG3URJUDP/LPLWV If, despite all attempts at optimization, the desired aim is not achieved, you can use additional LOGO! units as required or limit the functionality of your application.
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7XWRULDO 1HVWLQJGHSWK In LOGO!Soft Comfort you can only implement a certain maximum nesting depth in your control programs. In a program path, the maximum nesting depth is 9 (7 function blocks plus one input and one output in the path). 6HH&KDSWHU0HPRU\DQG3URJUDP/LPLWV /LQNLQJIXQFWLRQEORFNV SURFHGXUH To complete the circuit, the individual blocks have to be linked with one another. To do so, you choose the Link button on the Tools toolbar. È /LQN Now you move the mouse pointer to the terminal pin of a block and press and hold the left mouse button. Keeping the mouse button pressed, you move the mouse pointer to the pin that you want to connect the first pin to and then release the mouse button. LOGO!Soft Comfort then connects the two pins together.
You have created a link between the two block pins. Proceed in the same way for the remaining links. +HOSZLWKOLQNLQJIXQFWLRQEORFNV If a link line is drawn from an output to an input, a window opens showing the designation of the pin. When the mouse button is released, the line snaps to the input indicated.
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7XWRULDO 5XOHVIRUOLQNLQJIXQFWLRQEORFNV The following rules apply to the linking of function blocks:
•
Links can only be made between block inputs and block outputs.
•
An output can be linked to more than one input but an input can not be linked to more than one output.
•
An input and an output on the same program path can not be linked with one another (no recursion). If such a link is required, a flag or an output has to be connected in between.
•
On special functions there are also green "terminal pins". These are not connecting pins but rather for assignment of the parameter settings shown next to the function.
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2SWLPL]LQJWKHYLHZ Once the function blocks have been inserted and connected up, the control program is complete. But there is still a little work to be done in order to obtain a sensible, in other words clearly laid out and space-saving, view of the circuit created. Objects placed on the circuit diagram such as function blocks and lines can be moved accordingly. 6HOHFWLQJREMHFWV Before objects can be moved, aligned or deleted they must first be selected. To select an object you first click the Selection tool on the Tools toolbar. È 6HOHFWLRQWRRO Individual blocks or connecting lines are selected simply by clicking the object concerned; groups of blocks or connecting lines are selected by enclosing them with a rectangle. This is done by pressing and holding the left mouse button and dragging a rectangle to enclose objects you wish to select. When you release the mouse button, the objects enclosed by the rectangle are selected. Selected objects are indicated by small red squares at the corners of the selected areas.
Apart from the methods described above for selecting single and multiple objects, there is another way you can select objects. You can select multiple objects one after the other by holding down the [Ctrl] key as you click subsequent objects. Clicking a selected object while holding the [Ctrl] key deselects the object concerned without deselecting the remaining selected objects.
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7XWRULDO (GLWLQJVHOHFWHGREMHFWV Individual or grouped objects can be deleted by pressing the [Del] key or moved by dragging them with the mouse or the keyboard. When using the cursor keys to move objects, they can be moved in very small steps (referred to as nudging). Selected objects can also be cut, copied or pasted using the relevant buttons on the Standard toolbar. È &XWVHOHFWHGREMHFW È &RS\VHOHFWHGREMHFW È ,QVHUWREMHFW (GLWLQJVHOHFWHGFRQQHFWLQJOLQHV There is a special editing facility for connecting lines. Selected connecting lines have round and square blue handles. The round handles can be used to move the lines at right angles to the direction in which they extend. The square handles can be used to connect the beginning or end of a line to a different terminal pin. The lines are moved by dragging the handles.
If you attempt to connect the end of a line to an unsuitable pin, it automatically jumps back to its original connection point when you release the mouse button. 6SOLWWLQJOLQNV SURFHGXUH Large circuits can easily become difficult to follow as in LOGO!Soft Comfort line junctions and intersections appear the same.In order to make the connections between blocks clearer, you can use the "Split/Reconnect" button on the Tools toolbar. È 6SOLW5HFRQQHFW Click the button and then click on a link. The selected connecting line is graphically split but the link between the blocks remains active. The unconnected ends of the split link are now shown with arrowhead symbols which indicate the direction of signal transmission. The name and pin number of the block to which the unconnected line is linked is shown above the arrowhead symbol.
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7XWRULDO
If you click on a split-link arrowhead while the Split/Reconnect button is active, the link is reconnected.
It is not advisable to use this tool with small circuits as you can optimise the circuit layout simply by rearranging the positions of objects. 6SOLWWLQJOLQNV DGYDQWDJHV With larger and more complex circuits, on the other hand, there may be a large number of connecting line intersections which can make interpretation of the circuit very difficult. In such cases, the Split/Reconnect button is an extremely effective means of making the layout of the circuit significantly clearer. Another advantage of the Split/Reconnect tool becomes obvious with circuits that are too large to fit on a single printed page, in other words which include page breaks. If the Split/Reconnect tool is not used, connecting lines that join blocks on different pages are cut off at the end of the page without any reference to their origin/destination.
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7XWRULDO
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/DEHOV The Label tool on the Tools toolbar allows you to create labels either as bound or unbound text boxes. To do so, click the Label button. È /DEHO If you then click on a block or anywhere else on the Drawing Board, a window opens for you to enter the label text. When you have entered the label text, simply click anywhere outside the label window or press the [ESC] key. The window is closed and the label text is displayed on the diagram. That label can now be selected and moved or aligned.
%RXQGDQGXQERXQGODEHOV Depending on whether you click on a block or a blank space on the Drawing Board, the label you create will be bound or unbound. If you click on a blank space on the Drawing Board, the label you create is unbound. If you click on a block, the label you create is bound to that block. If you select a block to which a label is bound, the label is not simultaneously selected but if you move the block, the label moves with it. If the block is copied or cut, only the block is placed on the Clipboard. If the block is cut from the diagram, the bound label is deleted. However, the bound label can be individually selected and moved, copied, cut or pasted. If a bound label is pasted from the Clipboard, it is no longer bound to the original block. A label can be edited by activating the Label tool and then clicking on the label to be edited.
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7XWRULDO %ORFNFRPPHQWV In the block properties dialog box you will see a Comments tab on which you can enter a name for the function block or remarks as to the purpose of the of the block in your circuit.
Comments
The comments entered are then displayed on the diagram as a bound label and can be positioned as required. If the block is moved, however, the label moves with it. Deleting the block also deletes the label.
*HWWLQJ6WDUWHG 6LPXODWLQJD&RQWURO3URJUDP ,QWURGXFWLRQ The program simulation function allows you to test out a program and alter its parameters. In that way you can be sure that you will be downloading a functioning and optimized program to your LOGO! module.
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6LPXODWLRQPRGH To start the simulation, click the end button on the Tools toolbar. This switches the program to simulation mode. È 6LPXODWLRQ While simulation mode is active, the button appears depressed. Clicking any other button on the Tools toolbar cancels simulation mode and switches back to the programming mode for whichever tool is selected (e.g. for selecting or positioning function blocks).
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7XWRULDO 0HVVDJH:LQGRZ When you start the simulation, the control program is analysed with regard to its resources and the LOGO! module to be used. That information along with any error messages is entered in the Message Window. The Message Window can be activated by choosing View ÈMessage Window from the menu bar.
All accumulated messages from LOGO!Soft Comfort are entered in this window and can be referred back to by scrolling the display.The messages are not permanently saved. When you start LOGO!Soft Comfort, the message window is blank. The messages in the Message Window can be selected so that they can be deleted or copied to other applications.
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7XWRULDO 6WDWXVGLVSOD\ In simulation mode, buttons/message windows are displayed above the Drawing Board next to the Standard toolbar for displaying the status of inputs, outputs and power supply. The status bar displays details of which LOGO! model is the minimum requirement for implementing your control program.
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5HSUHVHQWDWLRQRILQSXWV The inputs are represented as buttons with a key or switch symbol. Below the symbol is the designation for the input shown. An open input corresponds to a switch that has not been operated. If you click a button it appears depressed and the switch is shown as closed.
È Button for key I1, not operated È input open
È Button for key I1, operated È input closed
È Button for switch I2, not operated È input open
È Button for switch I2, operated È input closed
È Status box for input module I3 È frequency input
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7XWRULDO )XQFWLRQRILQSXWV Inputs can be configured in a variety of ways. In order to change the behavior of an input, you choose "Tools È Simulation Parameters" from the menu bar. In the dialog box that opens you can then define the function of the input switch. A choice of three options is offered: •
Switch
•
Key
•
Frequency
A key is only active while it is held down. As soon as it is released and is no longer depressed, the contact is open again. A switch remains active after being pressed and released and is not deactivated until it is pressed again. The frequency of a frequency input can be preset or changed while the simulation is running. The frequency should be entered in Hz. A frequency input is a special case in this context as it should only be used with the trigger special function block. 6HH&KDSWHU)UHTXHQF\7ULJJHU Inputs are identified by the letter I. For the relevant LOGO! models there are also inputs identified by the letters Ia which are for the ASi bus inputs.
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7XWRULDO 'LVFRQQHFWLQJWKHSRZHU Clicking the Power button disconnects the power supply for all inputs thereby simulating a power failure.
È Power button, not pressed
È Power button, pressed È simulates power failure The behavior of the circuit in terms of power failure response, restart and remanence can be tested with this function. 2XWSXWV The status of an output or flag is indicated by a light or dark bulb symbol. Below the bulb symbol is the designation of the output in your control program.
È Status icon for output Q1 È output not conducting
È Status icon for output Q1 È output conducting The output status icons are purely status indicators. They are not buttons for operating the output. When your control program activates an output, the bulb is shown switched on; an inactive output is indicated by a switched off bulb. Outputs are identified by the letter Q for outputs and M for flags. Some outputs may have the identification letters Qa, in which case they are outputs for the ASi bus (only available on the applicable LOGO! models).
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7XWRULDO $VVLJQLQJSDUDPHWHUVGXULQJWKHVLPXODWLRQ If you double-click a block while the simulation is running, the Properties dialog box for the block appears. Here you can enter comments or set parameters just as in programming mode.
While the simulation is running, the current parameter values are displayed. This analysis facility allows you to follow the behavior of your control program. Multiple parameter assignment windows can be open while the simulation is running. You can also reduce them to such a size that only the actual values remain visible.
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6DYLQJDSURJUDP To save your program, click the Save button on the Standard toolbar. È 6DYH The program is saved with the name it was opened as and any older versions are overwritten. If it is a new program that you are saving for the first time, you are asked to specify a path to save it to and a name for the program. 2SHQLQJDSURJUDP If you wish to export your control program, revise it, or download it to a LOGO! module, you can open it again at any time. È 2SHQ
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*XLGHWR/2*26RIW&RPIRUW
*XLGHWR/2*26RIW&RPIRUW 2YHUYLHZRI8VHU,QWHUIDFH *HQHUDOGHVFULSWLRQ
Menu bar Standard toolbar
Tools toolbar
Drawing Board
Scroll bars Status bar
0HQXEDU The Menu bar menus contain various commands for editing and managing your control programs. There are also functions for entering default settings and transferring programs. 7RROEDUV A Standard toolbar and a Tools toolbar provide the facility for quick and easy access to the most important and most frequently used functions in LOGO!Soft Comfort. 6WDWXVEDU The status bar displays details of the currently selected tool, the program status and the current zoom factor. 'UDZLQJ%RDUG The Drawing Board is where the symbols and links for the control program are arranged. It is the actual working space of the program. 6FUROOEDUV In order to keep even large circuits manageable, there are scroll bars at the bottom and on the right of the screen which can be used to scroll the diagram horizontally and vertically.
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'HVFULSWLRQRI$YDLODEOH%XWWRQV
6WDQGDUG7RROEDU
*HQHUDOGHVFULSWLRQ The buttons on the Standard toolbar represent commands that are also available from the menu bar. Placing buttons for the most important commands on the Standard toolbar provides a means of quick access to the most important functions. ÈStandard toolbar There are buttons for the commands 1HZ, 2SHQ and 6DYH from the File menu and the commands &XW, &RS\ and 3DVWH from the Edit menu. Buttons are also provided for the file transfer commands /2*2È3& (Upload) and 3&È/2*2 (Download) from the Tools menu. 1HZ
The Drawing Board is cleared as it is when the program is first started ready for the creation of a new control program. Depending on the default settings, a Properties dialog box for the program to be created may appear. On the other hand, the Properties dialog box may not appear if the default setting has been specified accordingly at File È Properties. It can nevertheless be opened whenever required and entries made or altered. It is essential that any previously created control program on the Drawing Board is saved before clicking the New button as this action clears the Drawing Board ready for creation of a new program. If you do not save an existing program before pressing the New button, LOGO!Soft Comfort asks you to confirm that you definitely do not wish to save the existing program. Alternatively, you have the option of performing a Quick Save. Program sections that have previously been placed on the Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function. 2SHQ
A dialog box opens from which you can select and open a previously created control program in order to edit it on the Drawing Board. Control programs created in LOGO!Soft Comfort must have the file extension *.lsc. It is essential that any previously created control program on the Drawing Board is saved before clicking the Open button as this action clears the Drawing Board ready to load the program being opened. If you do not save an existing program before pressing the Open button, LOGO!Soft Comfort asks you to confirm that you definitely do not wish to save the existing program. Alternatively, you have the option of performing a Quick Save. Program sections that have previously been placed on the Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function.
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*XLGHWR/2*26RIW&RPIRUW 6DYH
If you are saving a new program for the first time, a dialog box opens for you to specify the path and file name to which the program is to be saved. If you are saving a modified version of an existing program, a Quick Save is performed. The old version of the program is overwritten by the revised version - in other words the new program is saved to the same path and name as the source file. &XWVHOHFWHGREMHFW
One or more selected objects, i.e. function blocks and/or connecting lines, are deleted from the Drawing Board and placed on the Clipboard. &RS\VHOHFWHGREMHFW
One or more selected objects, i.e. function blocks and/or connecting lines, are copied from the Drawing Board and placed on the Clipboard. 3DVWHREMHFW
Objects previously placed on the Clipboard are pasted onto the Drawing Board. The position at which they are inserted is either below the previously selected object or a position specified previously by clicking with the mouse. /2*2È3& 8SORDG
The control program on the LOGO! module is uploaded to LOGO!Soft Comfort. As the program on the LOGO! module lacks the graphical information used in LOGO!Soft Comfort, the arrangement of the blocks is performed automatically according to the LOGO!Soft programming software conventions. 6HH&KDSWHU7RROV0HQX 3&È/2*2 'RZQORDG
The control program created on the PC in LOGO!Soft Comfort is downloaded to the LOGO! module. As the LOGO! module can not use the graphical information used in LOGO!Soft Comfort, the program labels and terminal designations are not downloaded. For that reason, it is advisable to save the program on the PC beforehand. 6HH&KDSWHU7RROV0HQX
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7RROV7RROEDU
*HQHUDOGHVFULSWLRQ The Tools toolbar incorporates buttons for program design and editing functions. Each of the tools represents a programming mode in which mouse operations have different effects. ÈTools toolbar The choice of modes on this toolbar is not available from the menu bar. 6HOHFWLRQWRRO
This mode is used for selecting and moving function blocks. Objects can be selected individually by left clicking with the mouse; multiple selections can be made using [Ctrl]+Left click or by dragging a rectangle to enclose the objects to be selected. /DEHOWRRO
This tool is used to place or edit user-definable text objects on the Drawing Board. As well as unbound labels, you can also create labels that are bound to specific blocks and are moved or deleted along with the block to which they are bound. To create a bound label, you click on the required block when the Label tool is active. There can only be one bound label for each function block. You can specify the font, font size and color individually for each label. 6SOLW5HFRQQHFWWRRO
This tool is used to split or reconnect links between function blocks. To split a link you select the line concerned by left clicking with the mouse while the Split/Reconnect tool is active. When a connecting line is split, the unconnected ends are shown with an arrowhead indicating the function block to which they are linked. That reference specifies the block name and input/output number of the block to which the connecting line is linked. /LQNWRRO
This tool is used to link up inputs and outputs on the function blocks placed on the Drawing Board. To do so you move the mouse pointer to an input or output pin of a block and press and hold the left mouse button. Keeping the mouse button pressed, you drag the mouse pointer to the pin that you want to connect the first pin to. Now release the mouse button to fix the connecting line between the two pins. While the connecting line is being drawn it is shown as a straight line between the first pin and the mouse pointer. Once it has been fixed, it appears as a combination of horizontal and vertical lines which can be manipulated using the selection tool.
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This tool has to be selected if you want to place input blocks, output blocks, flags or constants (high, low) on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Constants and Terminals tool.
%DVLF)XQFWLRQVWRRO
This tool has to be selected if you want to place simple Boolean logical operation blocks on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Basic Functions tool.
6SHFLDO)XQFWLRQVWRRO
This tool has to be selected if you want to place special remanence or time-related function blocks on the Drawing Board. The specific type of function block to be inserted is selected from an additional toolbar which appears when you select the Special Functions tool.
6LPXODWLRQWRRO
When you select the Simulation tool, a toolbar for monitoring and controlling inputs and outputs appears. A software switch acts as a means of simulating a power failure so that the circuit can be tested out for remanence characteristics. The control program created and all its function blocks remain visible during the simulation.
When the simulation is started, a program check is carried out and the results written to the Message Window which can be viewed by choosing View È Message Window from the menu bar.
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'HVFULSWLRQRI0HQX%DU ,QWURGXFWLRQ The menus on the Menu bar provide access to a variety of functions for managing and editing control programs for LOGO! modules.
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*HQHUDOGHVFULSWLRQ The File menu contains commands for file management. There are commands for opening, saving and creating control programs as well as for printing and for setting general file properties.
1HZ The Drawing Board is cleared as it is when the program is first started ready for the creation of a new control program. Depending on the default settings, a dialog box with three tabs for entering the properties of the program to be created may appear. It can in any case be recalled at any time to either enter or alter property settings by choosing File È Properties from the menu bar. It is essential that any previously created control program on the Drawing Board is saved before clicking the New button as this action clears the Drawing Board ready for creation of a new program. In order to prevent an existing program being accidentally deleted, a dialog box opens asking the user if the current program should be saved first. This dialog box only opens if the program has been altered since the last time it was opened.
Program sections that have previously been placed on the program’s Clipboard using the Cut or Copy functions remain on the Clipboard and can be inserted in the new program using the Paste function. There is also a button for this menu command on the Standard toolbar. È Button for menu command 1HZ
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*XLGHWR/2*26RIW&RPIRUW 2SHQ A dialog box opens from which you can select and open a previously created control program in order to edit it on the Drawing Board. Control programs created in LOGO!Soft Comfort have the file extension *.lsc.
It is essential that any previously created control program on the Drawing Board is saved before clicking the Open button as this action clears the Drawing Board ready for creation of a new program. In order to prevent an existing program being accidentally deleted, a dialog box opens asking the user if the current program should be saved first.
If a file being opened has the extension .lgo, this indicates that it is in LOGO!Soft format. Missing information about the graphical representation of the program is then added by LOGO!Soft Comfort. For details of how to save a LOGO!Soft Comfort program in LOGO!Soft format, refer to the command Export. There is also a button for this menu command on the Standard toolbar. È Button for menu command 2SHQ 6DYH If you are saving a new program for the first time, a dialog box opens for you to specify the path and file name to which the program is to be saved. If you are saving a modified version of an existing program, a Quick Save is performed. The old version of the program is overwritten by the revised version - in other words the new program is saved to the same path and name as the source file.
There is also a button for this menu command on the Standard toolbar. È Button for menu command 6DYH
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*XLGHWR/2*26RIW&RPIRUW 6DYH$V A dialog box opens for you to specify the path and file name to which the current program is to be saved. In this way, programs that have been changed can be saved with a different name or to a different directory so that previous versions of the program can be retained and retrieved if necessary. ([SRUW LOGO!Soft Comfort provides an interface for exchanging control programs with the program LOGO!Soft in LOGO!Soft version 3.x format to the path specified. When the file is converted, additional information such as the graphical data relating to the position of the function blocks is omitted. For details of how to open a LOGO!Soft program in LOGO!Soft Comfort, refer to the description of the command File Open. 3DJH6HWXS This command opens a dialog box in which you can specify the page settings for creating control programs. Arrangement of the function blocks can then take account of the print layout requirements. LOGO!Soft Comfort provides the facility for multi-page printout with the position of page breaks indicated on the screen. The print area is user-definable up to a maximum of 297 mm x 420 mm (A3) and can therefore be adjusted to fit all commonly used paper formats. The area that can not be printed by the printer can be entered in the relevant boxes. For details of these measurements, refer to your printer’s manual. The side margins are made up as follows from the measurements entered: Margins (mm) + Unprintable area (mm) = Margin left/top
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*XLGHWR/2*26RIW&RPIRUW The settings made at this point have no effect on the printer settings. To alter those settings you have to choose File È Print or Tools È Options È Print from the menu bar. 3ULQW The standard Windows Printers dialog box provides access to options for choice of printer and printer properties. Other printer settings can be made on the Windows Control Panel. Other printer output settings can be specified by choosing Tools È Options È Print from the menu bar. 3URSHUWLHV The Properties dialog box contains tabs for General Properties , Comments and Statistics. The General tab provides the facility for entering details of the current control program. There are input boxes for project-related and internal company data.
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29
*XLGHWR/2*26RIW&RPIRUW On the Comments tab you can enter a brief description of the control program or notes relating to it.
The Statistics tab shows details of when the control program was created and when it was last altered.
([LW This command closes down the LOGO!Soft Comfort application.
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*XLGHWR/2*26RIW&RPIRUW
(GLW0HQX
*HQHUDOGHVFULSWLRQ The Edit menu provides functions for editing your control program. However, the basic commands for creating and editing a control program are accessed via the various programming modes offered by the Tools toolbar.
8QGR This command allows you to reverse actions carried out on the Drawing Board. LOGO!Soft Comfort allows you to undo up to the last ten operations. Functions that are undone can not automatically be reinstated. If you hover the mouse over the Undo command, a tooltip appears indicating the what type of action will be undone. &XW One or more selected objects, i.e. function blocks and/or connecting lines, are deleted from the Drawing Board and placed on the program’s Clipboard. There is also a button for this menu command on the Standard toolbar. È Button for menu command &XW &RS\ One or more selected objects, i.e. function blocks, labels or connecting lines, are copied from the Drawing Board and placed on the program’s Clipboard. There is also a button for this menu command on the Standard toolbar. È Button for menu command &RS\ 3DVWH Objects previously placed on the program’s Clipboard are pasted onto the Drawing Board. The position at which they are inserted is either below the previously selected object or a position specified previously by clicking with the mouse. There is also a button for this menu command on the Standard toolbar. È Button for menu command 3DVWH
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*XLGHWR/2*26RIW&RPIRUW The contents of the Clipboard can only be pasted if there are sufficient resources available. Function blocks take up a certain amount of resources according to the type of function block. If there are not sufficient resources available, a message to that effect is displayed.
Connecting lines with unconnected ends can not be pasted. Connecting lines can only be pasted if they connect two function blocks and have been placed on the Clipboard together with those function blocks. 6HOHFW$OO All objects on the Drawing Board are selected, i.e. function blocks, connecting lines and labels. %ULQJ7R)URQW If a number of objects are overlapping one another, a specifically selected object can be brought to the front. 6HQG7R%DFN If a number of objects are overlapping one another, a specifically selected object can be sent to the back. 7HUPLQDO'HVFULSWLRQ A dialog box for entering terminal descriptions opens. Here you can enter designations for inputs and outputs. The terminal designations are shown in brackets next to the block designation. You can specify whether or not the terminal designations are to be shown on the screen and on printouts by choosing Tools È Options È Screen from the menu bar.
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*XLGHWR/2*26RIW&RPIRUW %ORFN3URSHUWLHV To open the Block Properties window, you first have to select a block for which the properties are to be displayed. If multiple blocks are selected, the dialog box only shows the properties of the first of them.
The block properties dialog box consists of a number of tabs. Every block has a Comments tab on which the user can enter remarks relating to the selected block, for example. With some function blocks there is also a Parameters tab.
)RUPDW0HQX
*HQHUDOGHVFULSWLRQ This menu provides formatting options for labels and function groups. You can define the font, the font size and style as well as the alignment of selected objects.
)RQW font, the font style, font size and font color of text. To define the format of existing text objects, you have to select them first. You can then specify the font attributes you require and click OK to apply the new formatting. 7KHIROORZLQJIRQWIRUPDWRSWLRQVDUHDYDLODEOH Font
Font size
Color
Dialog SansSerif Serif Monospaced DialogInput
8 9 10 12 14 18 24 36 48 72
Black Blue Green Red Pink Magenta Orange
Font style Bold Italic
LOGO!Soft Comfort Manual
Yellow Aquamarine Sea green Dark gray Light gray White Transparent
33
*XLGHWR/2*26RIW&RPIRUW If you wish particular settings to be used as the standard format, you can specify them as the default format settings. New text objects are then displayed with the default format attributes. To return to the default settings, click the Default button.
$OLJQPHQW The Alignment command is used to align labels and function blocks in a choice of two ways.
•
Vertical: selected objects are aligned flush right.
•
Horizontal: selected objects are aligned horizontally.
Objects are aligned with the first block selected if blocks are selected individually or with the last block included if blocks are selected collectively.
9LHZ0HQX
*HQHUDOGHVFULSWLRQ The View menu allows you to set the zoom factor at which your circuit is displayed and specify whether to show or hide various display windows.
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*XLGHWR/2*26RIW&RPIRUW =RRP LOGO!Soft Comfort offers a variety of options for enlarging or reducing the size at which the control program is displayed. When you choose Zoom, a dialog box opens in which you can select the zoom factor from a list of set choices or enter a custom zoom factor in the relevant box.
If you choose an unsuitable zoom factor, the objects might appear out of focus on your screen. For that reason you should use the set zoom factors wherever possible. This "out of focus" appearance has no effect on the appearance of the control program when printed out. =RRP,Q The zoom factor is increased in the following fixed increments: 100 È 150 È 200 È 250 È 300 È 400 (maximum) =RRP2XW The zoom factor is decreased in the following fixed increments: 100 È 75 È 50 È 25 (minimum)
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*XLGHWR/2*26RIW&RPIRUW 7RROEDUV This command allows you to specify individually for each of the toolbars whether they should be shown or hidden.
•
Standard: showing and hiding the Standard toolbar
•
Tools: showing and hiding the Tools toolbar
0HVVDJH:LQGRZ The Message Window displays program messages. Following simulation of a control program, the Message Window shows details of the resources used together with the current date and time. Details of the LOGO! modules on which the simulated control program can be used are also given.
Other messages that appear in the Message Window are as follows: Outputs without function: lists output blocks which have been placed on the Drawing Board but to which no link to a terminal block is assigned (inputs, Hi, Lo). In other words, the value of the connected output will never be able to change. ([DPSOH
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*XLGHWR/2*26RIW&RPIRUW Blocks without links to an output: lists blocks that have been placed on the Drawing Board but to which no link with an output is assigned. ([DPSOH
6WDWXV%DU This command allows you to have the Status Bar showing or hidden. The Status Bar is made up of three sections. The first section, on the far left, shows details of the active tool and any program messages. The second section indicates whether the open control program has been modified, and the third section shows the current zoom factor.
7RROWLSV When you hover the mouse over a button, a Tooltip appears showing the name of the button. Tooltips can be switched on or off.
7RROV0HQX
*HQHUDOGHVFULSWLRQ The Tools menu provides commands for entering the settings for program transfer as well as for the LOGO! module, the program simulation and other options.
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*XLGHWR/2*26RIW&RPIRUW 7UDQVIHU The program is transferred via the serial interface specified at Tools È Options È Interface. The LOGO! module must be connected to the PC using the connecting lead and must have been set to PC/Card È PCÛLOGO ready for transfer of the program.
Otherwise LOGO!Soft Comfort will return an appropriate error message.
7UDQVIHU 3&È/2*2 Transfers a control program created in LOGO!Soft Comfort to a LOGO! module.
Before transfer is started, the minimum LOGO! model required to run the program created is established. If the control program created can not be run on the LOGO! module being used, an error message is displayed and transfer of the program is terminated. If the LOGO! model can not be established, a message is displayed informing the user. The user then has the choice of continuing with the transfer or cancelling it. There is also a button for this menu command on the Tools toolbar. È Button for menu command 3&È/2*2 (Download) Transfer messages are displayed on the Status Bar and in the Message Window. If errors occur during transfer the user can restart the transfer after a query. If no errors occur during transfer, a message to that effect appears on the Status Bar. Error messages are shown in detail in the Message Window.
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*XLGHWR/2*26RIW&RPIRUW 7UDQVIHU /2*2È3& The control program on the LOGO! module is uploaded to LOGO!Soft Comfort.
When a program is uploaded from the LOGO! module it lacks the graphical information used in LOGO!Soft Comfort for arrangement of the blocks on the Drawing Board. In such cases, a suitable layout for the control program is automatically generated. The circuit diagram generated corresponds to the layout in the LOGO!Soft block diagram except that function blocks used more than once are not displayed more than once but are identified by block links. On completion of the transfer operation, the control program uploaded from the LOGO! module is displayed on the Drawing Board. It is always positioned in the top left corner of the Drawing Board. If necessary, you should use the scroll bars to bring the circuit into view. There is also a button for this menu command on the Tools toolbar. È Button for menu command /2*2È3& (Upload) Transfer messages are displayed on the Status Bar and in the Message Window.
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*XLGHWR/2*26RIW&RPIRUW 6HW&ORFN This command allows you to set the date and time. In order to be able to communicate with a LOGO! module, the LOGO! module must first be set to PC/Card È PCÛLOGO and connected to the PC using the connecting lead.
Clicking Read or Write reads the current date from the LOGO! module or writes the date set in LOGO!Soft Comfort to the LOGO! module. The Current Time button adopts the PC system time as the current date. 6HW&ORFN HQWHULQJGDWHWLPHPDQXDOO\ If you place the insertion point in the date/time boxes rather than clicking the up and down arrows, you can type the figures directly on the keyboard. If the date details are transferred to the LOGO! module but the date is implausible, the LOGO! module automatically counts the "surplus" days as part of the next month. ([DPSOH Input:
Day 41; Month 5; Year 1999
Interpreted by LOGO! as:
Day 10, Month 6, Year 1999
May has 31 days, so there are 10 surplus days which are carried over to the next month. The Set Clock dialog box then shows the date as it has been interpreted by the LOGO! module. The identical procedure is also applied to implausible figures in any of the other boxes. 'HWHUPLQH/2*2 When you choose this command, LOGO!Soft Comfort works out the minimum LOGO! model needed to run the control program created. The result is shown on the Status Bar. The Message Window details all models that can run the control program created. 6LPXODWLRQ When you choose Simulation, a toolbar for monitoring and controlling inputs and outputs appears. A software switch acts as a means of simulating a power failure so that the circuit can be tested out for remanence characteristics. The control program created and all its function blocks remain visible during the simulation. There is also a button for this menu command on the Tools toolbar. È Button for menu command 6LPXODWLRQ.
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*XLGHWR/2*26RIW&RPIRUW 6LPXODWLRQ3DUDPHWHUV A dialog box listing all available inputs opens. Here you can assign an appropriate function to every input used. The choice of functions offered extends to key, switch or frequency input. In the case of frequency inputs, the simulated frequency in Hz can be entered.
2SWLRQV *HQHUDO Here you can specify the settings for language and the number of pages to be used for creating the program. You can define how the pages are to be arranged to suit your circuit layout requirements. The language setting determines the language used for the menus and online Help.
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41
*XLGHWR/2*26RIW&RPIRUW 2SWLRQV 6FUHHQ Here you can specify what types of text objects you wish to have displayed on the screen.
2SWLRQV 3ULQW Here you can specify which types of text object you wish to be visible on the printout.
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42
*XLGHWR/2*26RIW&RPIRUW 2SWLRQV ,QWHUIDFH Here you can manually enter the interface to be used or you can choose to have it detected automatically. With the latter option, all interfaces are checked for the presence of a LOGO! module.
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43
*XLGHWR/2*26RIW&RPIRUW
+HOS0HQX
*HQHUDOGHVFULSWLRQ This menu provides access to Help and other information about LOGO!Soft Comfort.
&RQWHQWV This command opens the LOGO!Soft Comfort manual. The PDF file format makes for straightforward printing out of the Help manual. If the program fails to find a PDF file reader, the user must specify the path for the reader.
$ERXW This displays the version number and the release date of your LOGO!Soft Comfort program.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
3URJUDPPLQJLQ/2*26RIW&RPIRUW 6SHFLILFDWLRQRI/2*20RGHO ,QWURGXFWLRQ Specific program settings are not required. With LOGO!Soft Comfort you can start designing your own control programs right away. In LOGO!Soft Comfort you write your programs first and then have LOGO!Soft Comfort work out for you which LOGO! model you need as a minimum to implement your ideas! The minimum LOGO! model you require to implement your ideas depends on a number of factors as follows: •
The number of inputs and outputs to be used
•
The amount of memory used by the control program
•
Special functions used
•
Use of an ASi bus connection
/2*20RGHOV LOGO!Soft Comfort distinguishes between the LOGO! Innovation models and the 1stgeneration models, identifiable by the last digits of the order number (0BA0). Among other things, the latter have less memory and no bit memory blocks. The current LOGO! models are 2nd-generation models. They are part of the LOGO! Innovations range. They are recognizable by the last digits of their order number as follows: 0BA1. Currently the range of models is as follows: 'HVLJQDWLRQ
2UGHU1XPEHU
'HVLJQDWLRQ
2UGHU1XPEHU
12 RC 12 RCL 24 24 L 24 RC
6ED1052-1BB00-0BA1 6ED1053-1BB00-0BA1 6ED1052-1CA00-0BA1 6ED1053-1CA00-0BA1 6ED1052-1HB00-0BA1
24 RCL 230 RC 230 RCL 24 RCL B11 230 RCL B11
6ED1053-1HB00-0BA1 6ED1052-1FB00-0BA1 6ED1053-1FB00-0BA1 6ED1053-1HH00-0BA1 6ED1053-1FH00-0BA1
For the purposes of the control program, the LOGO! Innovation models are distinguished by the number of inputs and outputs and whether or not they have an ASi connection. All of these models have the same amount of memory.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 6SHFLDOIXQFWLRQVGHSHQGHQWRQ/2*2PRGHOV 6SHFLDO)XQFWLRQ%ORFN
/2*20RGHO8VDEOH:LWK 0BA0 Standard
0BA0 ...L
0BA0 ...LB11
0BA1 All
ON delay
Yes
Yes
Yes
Yes
OFF delay
Yes
Yes
Yes
Yes
Pulse relay
(Yes)
Yes
Yes
Yes
Time switch
Yes
Yes
Yes
Yes
(Yes)
Yes
Yes
Yes
Pulse generator
Yes
Yes
Yes
Yes
Retentive ON delay
Yes
Yes
Yes
Yes
(Yes)
Yes
Yes
Yes
Wiping relay
No
Yes
Yes
Yes
Hours counter
No
Yes
Yes
Yes
Trigger
No
Yes
Yes
Yes
Year clock
No
No
No
Yes
Asynchronous pulse generator
No
No
No
Yes
Latching relay
Counter
Limitations of 0BA0 Standard: pulse relay, counter and latching relay have no remanence, the counter is 4-digit.
LOGO!Soft Comfort Manual
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
0HPRU\DQG3URJUDP/LPLWV ,QWURGXFWLRQ There are a number of limits for a control program on a LOGO! module as follows: •
Memory (use of memory by function blocks)
•
Number of blocks connected in sequence (nesting depth)
8VHRIPHPRU\ The function blocks in a control program require a certain amount of memory. The table below summarizes how much memory each function block occupies in each memory area. )XQFWLRQ%ORFN
3DU
5$0
7LPHU
5(0
Basic functions
0
0
0
0
ON delay
1
1
1
0
OFF delay
2
1
1
0
Pulse relay*
0
(1)
0
(1)
Time switch
6
2
0
0
Latching relay*
0
(1)
0
(1)
Pulse generator
1
1
1
0
Retentive ON delay
2
1
1
0
Counter*
2
(2)
0
(2)
Wiping relay
1
1
1
0
Hours counter
2
0
0
4
Trigger
3
3
1
0
Year clock
2
0
0
0
Asynchronous pulse generator
3
1
1
0
* Depending on configuration of remanence for function, each function occupies the following amount of memory: •
Remanence switched off: function occupies RAM area
•
Remanence switched on: function occupies REM area
0HPRU\ The maximum amount of memory a program can occupy on a LOGO! module is as follows: 0HPRU\
%ORFNV
3DU
5$0
7LPHU
5(0
%LW
LOGO! 0BA1 Innovation
56
48
27
16
15
4
LOGO! 0BA0
30
27
24
10
0/7
0
3URJUDPSDWK A program path consists of a series of function blocks starting with a terminal block and ending with an output block. The number of function blocks in a program path indicates the nesting depth.
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47
3URJUDPPLQJLQ/2*26RIW&RPIRUW Terminal blocks for the purposes of determining nesting depth are: •
Inputs (I, Ia)
•
High, Low (Hi, Lo)
•
Flags (M)
•
Outputs (Q, Qa)
Outputs for the purposes of determining nesting depth are: •
Outputs (Q, Qa)
•
Flags (M)
1HVWLQJGHSWK There is a maximum nesting depth that you can implement in your control program for a LOGO! module. The maximum nesting depth in a program path is 9 blocks. The following equation therefore results: 1 Terminal block + 7 Function blocks + 1 Output block Max. program path nesting level:
9 Blocks
If a program path that exceeds the maximum nesting depth is entered in LOGO!Soft Comfort, an error message is displayed if you attempt to perform a download or simulation.
Max. nesting depth exceeded
Error message
,PSOHPHQWLQJORQJSURJUDPSDWKV Longer program paths can be implemented by means of signal feedback. This is done by placing a flag block at the end of a path. The remaining function blocks are connected to the output of the flag. The LOGO! interprets the flag as the output of the first program path and as the terminal block of the succeeding function blocks. On the LOGO! the long path with the flag is treated as two separate paths. If no more flags are available, you can use an output block instead.
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48
3URJUDPPLQJLQ/2*26RIW&RPIRUW
%ORFNVDQG%ORFN1XPEHUV %ORFNV Blocks symbolize terminals or functions. In LOGO!Soft Comfort various types of block are distinguished and identified by abbreviations. %ORFN7\SH
,GHQWLILHU
%ORFN7\SH
,GHQWLILHU
Input
I
Flag
M
ASi input
Ia
High level
Hi
Output
Q
Low level
Lo
ASi output
Qa
Function
B
%ORFNQXPEHUV Whenever you insert a function block in your control program, LOGO!Soft Comfort assigns that block a number, the block number. On the LOGO! and in LOGO!Soft, the number of the current block is shown at the top right of the display. In LOGO!Soft Comfort, the block number is shown directly above the block. Block numbers assist navigation around the LOGO! display and the assignment of links. In LOGO!Soft Comfort you can also trace back split links by the block number indicated. The block designations of the inputs and outputs can be changed by means of the parameter assignment facility. In this case the designations are a representation of the real inputs and outputs on the LOGO! module. A specific input or output can be selected by means of the parameter assignment facility. The blocks High and Low are not assigned numbers as they do not change their switching condition and therefore do not have to be distinguished.
LOGO!Soft Comfort Manual
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
&RQVWDQWVDQG7HUPLQDOV &R
,QSXWV Input blocks represent the input terminals on a LOGO! module. Up to 12 inputs can be used. Using the block parameter assignment facility, an individual input block can also be assigned a different input terminal. However, the choice of inputs only includes those that have not already been assigned in the control program.
,QSXWVIRU$6L
Some LOGO! models (...B11) have the facility for connection to an ASi bus. Up to 4 ASi inputs can be used. Using the block parameter assignment facility, an individual input block can also be assigned a different ASi input. However, the choice of inputs only includes those that have not already been assigned in the control program.
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50
3URJUDPPLQJLQ/2*26RIW&RPIRUW
2XWSXWV
Output blocks represent the output terminals on a LOGO! module. Up to 8 inputs can be used. Using the block parameter assignment facility, an individual output block can also be assigned a different output terminal. However, the choice of outputs only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
2XWSXWVIRU$6L
Some LOGO! models (...B11) have the facility for connection to an ASi bus. Up to 4 ASi outputs can be used. Using the block parameter assignment facility, an individual output block can also be assigned a different ASi output. However, the choice of outputs only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
)ODJV
Flag blocks apply the same signal to their outputs that is applied to their inputs. Flags can be used to increase the nesting level of a path by connecting a flag block to the output of the path. Up to 4 flags can be used. Using the block parameter assignment facility, an individual flag can also be assigned a different flag number. However, the choice of flag numbers only includes those that have not already been assigned in the control program.
The signal applied at the output is always that of the last program cycle. The signal is not changed within a program cycle.
)L[HG6LJQDO/HYHOV
If the signal level ’1’ or ’H’ is to be applied constantly to the input of a block then it should be assigned the fixed signal KL (stands for high). Blocks for representing fixed voltage levels can not be configured.
If the signal level ’0’ or ’L’ is to be applied constantly to the input of a block then it should be assigned the fixed signal OR (stands for low). Blocks for representing fixed voltage levels can not be configured.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
%DVLF)XQFWLRQV %)
$1'
The output of the AND function only adopts the condition 1 if DOO inputs have the condition 1, i.e. are closed. If an input pin of this block is not connected it automatically has the condition ’1’. Logic table for AND block:
,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
0 0 0 0 0 0 0 1
25
The output of the OR function adopts the condition 1 if DW OHDVW one input has the condition 1, i.e. is closed. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for OR block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
0 1 1 1 1 1 1 1
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
127
The output adopts the condition 1 if the input has the condition 0, i.e. the NOT function inverts the condition at the input. If an input pin of this block is not connected it automatically has the condition ’1’. The advantage of the NOT function can be illustrated by the following example: you no longer require break switches for LOGO! You use a make switch and convert it into a break switch by using the NOT function. Logic table for NOT block:
,QSXW
2XWSXW
0 1
1 0
;25
The output of the XOR (exclusive OR) block adopts the condition 1 if the inputs have differing conditions. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for XOR block:
,QSXW
,QSXW
2XWSXW
0 0 1 1
0 1 0 1
0 1 1 0
1$1'
The output of the NAND (not AND) function only adopts the condition 0 if DOO inputs have the condition 1, i.e. are closed. If an input pin of this block is not connected it automatically has the condition ’1’. Logic table for NAND block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
125
The output of the NOR (not OR) function only adopts the condition 1 if all inputs have the condition 0, i.e. are switched off. Immediately any of the inputs is switched on (condition 1) the output switches off. If an input pin of this block is not connected it automatically has the condition ’0’. Logic table for NOR block: ,QSXW
,QSXW
,QSXW
2XWSXW
0 0 0 0 1 1 1 1
0 0 1 1 0 0 1 1
0 1 0 1 0 1 0 1
1 0 0 0 0 0 0 0
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
6SHFLDO)XQFWLRQV 6)
21'HOD\
%ULHIGHVFULSWLRQ
In the case of the ON delay, the output is not switched over until a definable time period has elapsed. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the condition at the input Trg changes from 0 to 1, a timed period Ta commences. Ta is the elapsed time on the LOGO! module. If the condition at input Trg remains 1 for long enough for the time T to elapse, the output is set to 1. There is a delay between the time when the input is switched on and the output switches on. If the condition at the input Trgswitches back to 0 before the time T has elapsed, the timer is reset. The output is reset to 0 if the condition at the input Trg is 0. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the delay period
Parameter 7
T is the delay period after which the output is switched on (output signal is switched from 0 to 1).
Output 4
Q switches on after expiry of the defined time T if Trg is still set.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time delay parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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In the case of the OFF delay, the output is not switched off until a definable time period has elapsed. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ If the input Trg switches to the condition 1, the output switches to 1 immediately. If the condition at Trg switches to 0, a timer starts timing the elapsed time Ta on the LOGO! module, the output remains set. If Ta reaches the time specified for T (Ta=T), the output Q is reset to 0. If the input Trg switches on and off again the timer starts timing the elapsed time Ta again. The input R (Reset) resets the elapsed time Ta and the output before the set time delay T has elapsed. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
'HVFULSWLRQ
Input 7UJ
A negative signal edge (change from 1 to 0) at the input Trg (Trg stands for trigger) starts the OFF delay timer
Input 5
The input R (Reset) resets the elapsed time for the OFF delay and sets the output to 0. (Reset has priority over Trg)
Parameter7
T is the delay period after which the output is switched off (output signal is switched from 1 to 0).
Output 4
Q switches on when Trg does but when Trg switches off remains on until the delay period T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time delay parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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The output is set and reset by a short pulse at the input. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Every time the condition at the input Trg changes from 0 to 1, the output Q changes its condition, i.e. the output is switched on or off. The input R resets the pulse relay to its original condition. After a power on or reset, the pulse relay is reset and the output set to 0. 3LQDVVLJQPHQW &RQQHFWLRQ
'HVFULSWLRQ
Input 7UJ
The input Trg (Trg stands for trigger) switches the output Q on and off.
Input 5
The input R (Reset) resets the pulse relay and sets the output to 0. (Reset has priority over Trg)
Parameter3DU
This parameter is used to switch remanence on or off. Rem: Off = no remanence On = condition can be remanently stored
Output 4
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Q switches on when Trg switches on and off again the next time Trg switches on.
60
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The block’s remanence can be activated in the block properties. If remanence is active, the condition of the block output is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the block output is set to 0 when power is restored after a failure.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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Up to three time windows in which the output is active can be defined. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Each time switch has three setting cams each of which can be used to configure a time window. You use the cams to set the on and off times for the time windows. At the on times, the time switch switches the output on if it is not already on. At the off times, the time switch switches the output off if it is not already off. If you set an on time on one cam that is the same as the off time on another cam on the time switch then the on and off times conflict. In such cases, Cam 3 has priority over Cam 2 and Cam 2 has priority over Cam 1. The LOGO! module is not susceptible to year-2000 problems. 3LQDVVLJQPHQW &RQQHFWLRQ
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Parameter &DP, &DP, &DP
The Cam parameter is used to set the on and off times for each of the ”&DPV” of the time switch. You specify the the times in terms of day and time.
Output 4
Q switches on when a configurable cam is switched on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The cam parameters can be set in the block properties. In the Mode box you specify the day or days on which the on and off times are to be active. The choice of modes is as follows: •
Monday
•
Tuesday
•
Wednesday
•
Thursday
•
Friday
•
Saturday
•
Sunday
•
Monday to Friday
•
Monday to Saturday
•
Monday to Sunday (i.e. every day)
•
Saturday and Sunday
In the On Time and Off Time boxes, you enter the relevant times in the following range: any time between 00:00 and 23:59 You activate or deactivate the on and off times by means of the check boxes. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 0DQXDOHQWU\ Left clicking on the time boxes places the insertion point in the box so that you can type the figures for the hours and minutes directly on the keyboard. Figures entered manually in this way must not exceed the logical maximum figures for the boxes concerned. Otherwise LOGO!Soft Comfort returns an error message.
È Incorrect number for hours
È Incorrect number for minutes
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3URJUDPPLQJLQ/2*26RIW&RPIRUW ([DPSOHRISDUDPHWHUDVVLJQPHQW The output of the time switch is to be switched on between from 08:00 to 13:00 and from 15:00 to 18:30 on the days Monday to Saturday. It is also to be switched on between the hours of 11:00 and 15:00 on Sundays. This requires you to set 3 cams as follows:
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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An input S sets the output Q and another input R resets the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ A latching relay is a simple binary memory cell. The signal at the output depends on the condition of the inputs and the previous condition of the output. Logic table for latching relay: 6
5
4
0 0 1 1
0 1 0 1
x 0 1 0
5HPDUNV Condition remains unchanged Reset Set Reset
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Input 6
The input S (Set) sets the output Q to 1.
Input 5
The input R (Reset) resets the output Q to 0. If S and R simultaneously have the condition 1 then the output is reset (Reset takes precedence over Set).
Parameter3DU
This parameter is used to switch remanence on or off. Rem: Off = no remanence On = condition can be remanently stored
Output 4
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Q switches on when S does and remains on until input R is set.
66
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The block’s remanence can be activated in the block properties. If remanence is active, the condition of the block output is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the block output is set to 0 when power is restored after a failure.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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A clock pulse with a definable period length is output at the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ The parameter T specifies the length of the on and off periods. The input (Q (Enable) switches the pulse generator on. The pulse generator sets the output to 1 for the period T and then sets it to 0 for the period T and continues repeating that cycle until the condition of input En changes to 0. The time specified for T must be ≥ 0.1 s. For T = 0.05 s and T = 0.00 s the time T is not defined. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input (Q
The input En (Enable) switches the pulse generator on (En=1) and off (En=0).
Parameter 7
T is the period for which the output is switched on/off.
Output 4
Q switches on and off cyclically in time with the pulse period T.
3DUDPHWHUDVVLJQPHQW The signal period parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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Following an input pulse, a definable timed period starts on expiry of which the output is set. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the condition at the input Trg changes from 0 to 1, a timed period Ta commences. If the elapsed time Ta reaches the time T, the output Q is set to 1. If the input Trg is switched again, it has no effect on Ta. The output and Ta are not reset to 0 until the condition at input R changes to 1. In the event of a power failure, the elapsed time is reset. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the delay period
Input 5
The input R (Reset) resets the elapsed time for the ON delay and sets the output to 0. (Reset has priority over Trg)
Parameter7
T is the delay period after which the output is switched on (output signal is switched from 0 to 1).
Output 4
Q is switched on when the delay period T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The delay period parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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On receipt of an input pulse, an internal counter starts counting either up or down, depending on configuration. When the definable count value is reached, the output is set. The direction of the count is set by a separate input. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Every positive signal edge at the input Cnt either increases the internal counter value by one (Dir = 0) or decreases it by one (Dir = 1). If the internal counter value is greater than or equal to the value specified for Par, the output Q is set to 1. The Reset input R can be used to reset the internal counter value and the output to ’000000’. As long as R=1, the output remains set to 0 and the pulses at the input Cnt are not counted. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 5
The input R (Reset) resets the internal counter value and the output to zero (Reset has priority over Cnt).
Input &QW
The counter counts the number of changes of condition from 0 to 1 at the input Cnt (Count). A change of condition from 1 to 0 is not counted. Maximum count frequency at the input terminals: 5 Hz
Input 'LU
The input Dir (Direction) determines the counting direction as follows: Dir = 0: counter counts upwards Dir = 1: counter counts downwards
Parameter 3DU
Par is the count threshold value; when the internal counter reaches that value, the output is set.
Output 4
Q switches on when the count threshold value is reached.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The counter parameter Par can be set in the block properties to a value in the range 0 to 999999. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module. The block’s remanence can be activated in the block properties. If remanence is active, the internal counter value is stored in the event of a power failure and restored when the power is restored. If remanence is not active, the counter value is set to 0 when power is restored after a failure.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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When the input is set, a definable timed period starts running. The output is set when the defined period has elapsed. 'LDJUDP
MI = Defined time period MN = Remaining period OT = Total elapsed time since last 1 signal at input Ral
'HVFULSWLRQRIIXQFWLRQ The hours counter monitors the input En. As long as the signal 1 is present at that input, the LOGO! monitors the elapsed time and the remaining period MN. The LOGO! displays those times in parameter assignment mode. When the remaining period MN reaches 0, the output Q is set to 1. The reset input R resets the output Q and the timer for the remaining period to the specified period MI. The internal counter OT continues to run. The reset input Ral resets the output Q and the timer for the remaining period to the specified period MI. The internal counter OT is reset to 0. /LPLWIRU27 When you reset the hours counter with the signal R, the accumulated time remains stored in OT. The maximum limit for the counter OT is 99999 h. If the hours counter reaches that figure, no more hours are recorded.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3LQDVVLJQPHQW &RQQHFWLRQ Input 5
'HVFULSWLRQ 5 Hours can be counted if Ral is not 1 5 Hours counter is stopped The input R (Reset) resets the output. The remaining period of the service interval MN is set to MN = MI. The previously elapsed time (OT operating time) remains stored.
Input (Q
En is the the monitored input. The LOGO! measures the length of time that that input is set ("1").
Input 5DO
5DO Hours can be counted if R is not 1 5DO Hours counter is stopped The input Ral (Reset all) resets the counter and the output to, i.e. Output Q = 0, Recorded operating time OT = 0 and Remaining period of service interval MN = MI.
Parameter 3DU: (MI)
0, specified service interval in hours.
Output 4
If the remaining period MN = 0 (see timing diagram), the output is set.
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MI can be any number of hours in the range 0 to 9999.
74
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The service interval parameter Par can be set in the block properties to a value in the range 0 to 9999. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module. Remanence is permanently active on the hours counter. Following a power failure, the program continues from the values reached before the power failure.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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An input signal produces a signal of definable duration at the output. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ When the input Trg switches to the condition 1, the output Q immediately switches to the condition 1. At the same time, the elapsed time Ta starts running; the output remains set. If Ta reaches the time specified for T (Ta=T), the output Q is reset to 0 (pulse output). If the condition at the input Trg switches back from 1 to 0 before the specified time has elapsed, the output also immediately switches back from 1 to 0. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input 7UJ
The input Trg (Trg stands for trigger) starts the timer for the wiping relay
Parameter 7
T is the period after which the output is switched off (output signal is switched from 1 to 0).
Output 4
Q switches on when Trg does and remains on until the time T has elapsed.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The time parameter T can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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The output is switched on or off depending on whether the frequency at the input is between two definable limits. 'LDJUDP
6:↑ is the on threshold. It can be any frequency in the range 0000 to 9999. 6:↓ is the off threshold. It can be any frequency in the range 0000 to 9999. *B7 is the time period in which the pulses at Fre are counted. G_T can be a period between 00.05s and 99.95s. 'HVFULSWLRQRIIXQFWLRQ The trigger measures the signals at the input Fre. The pulses received are recorded over a definable period G_T. If the frequency of the pulses received in the period G_T is greater than the on and the off thresholds, the output Q switches on. Q switches off again if the measured pulse frequency reaches or falls below the off threshold. 3LQDVVLJQPHQW &RQQHFWLRQ Input )UH
'HVFULSWLRQ The input whose frequency is to be measured is applied to the input Fre. Use
Parameter 3DU: (SW↑, SW↓, G_T)
•
Inputs I5/I6 (basic models 0BA1) or I11/I12 (LOGO!...L 0BA1) for higher frequencies (24 V inputs): max. 1 kHz
•
Any other input or circuit component for lower frequencies.
SW↑: ON threshold SW↓: OFF threshold G_T: time period over which the signal pulses applied are counted.
Output 4
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Q switches on or off depending on whether the frequency is outside the limits SW↑ and SW↓ (see description below).
78
3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The ON and OFF thresholds and the timer period can be set in the block properties. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
1RWH When using frequency inputs it should be noted that the inputs of the LOGO! should only be operated at frequencies of up to 5 Hz. The exception to that rule are the inputs I5/I6 on the basic models or the inputs I11/I12 on the L models which can take frequencies of up to 1 kHz if the inputs are applied directly to the trigger function.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
The output is controlled by a definable ON/OFF date. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ Each year clock has an ON and an OFF time. At the ON time, the year clock switches the output on and at the OFF time, it switches the output off. The OFF date indicates the date on which the output is reset to 0. The LOGO! module is not susceptible year-2000 problems. &ORFNEXIIHU The internal clock of a LOGO! module continues to run if there is a power failure, i.e. it has a power buffer. How long the power buffer lasts depends on the ambient temperature. At an ambient temperature of 25°C the typical power buffer is 80 hours. 3LQDVVLJQPHQW &RQQHFWLRQ
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Parameter &DP
The parameter Cam defines the ON and OFF times for the year clock.
Output 4
Q switches on when the configurable cam is switched on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The ON and OFF dates can be set in the block properties. A more convenient way of setting the date is provided by the Calendar button. This opens a dialog box with buttons for selecting the day and month. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
0DQXDOHQWU\ Left clicking on the month and day boxes places the insertion point in the box so that you can type the figures for the month and day directly on the keyboard. Figures entered manually in this way must not exceed the logical maximum figures for the boxes concerned. Otherwise LOGO!Soft Comfort returns an error message.
È Incorrect figure for month
È Incorrect figure for day
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3URJUDPPLQJLQ/2*26RIW&RPIRUW ([DPSOHRISDUDPHWHUDVVLJQPHQW The output of a LOGO! module is to be switched on every year between 1 March and 4 April and from 7 July to 19 November. For this you require 2 blocks each of which is configured for one of the ON periods. The outputs are then linked by an OR block.
Place two year-clock special function blocks on your Drawing Board and configure them as shown.
Link the blocks with an OR basic function block. The output of the OR block switches on if either of the two year clocks is switched on.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW
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The output pulse wave form can be modified by means of the definable pulse duration/interval ratio. 'LDJUDP
'HVFULSWLRQRIIXQFWLRQ The pulse duration and pulse interval can be set by means of the parameters TH and TL. The cursor keys can be used to set the time scale divisions to seconds, minutes or hours. Both parameters have the same time basis, they can not be set individually to different bases. The input INV allows the output to be inverted. The input INV only negates the output if the block is activated by EN. 3LQDVVLJQPHQW &RQQHFWLRQ
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Input (Q
The input En (Enable) switches the asynchronous pulse generator on and off.
Input ,QY $
The input Inv is used to invert the output signal of the asynchronous pulse generator when active.
Parameter 3DU
The pulse duration TH and pulse interval TL can be set.
Output 4
Q switches on and off cyclically on the basis of the pulse timing parameters TH and TL.
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3URJUDPPLQJLQ/2*26RIW&RPIRUW 3DUDPHWHUDVVLJQPHQW The pulse timing parameters TH and TL can be set in the block properties in seconds, minutes or hours. The Protection Active check box allows you to specify whether the parameter can be displayed and altered in parameter assignment mode on the LOGO! module.
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([DPSOH$SSOLFDWLRQV
([DPSOH$SSOLFDWLRQV 3UDFWLFDO([DPSOH +RXVHKROG:DWHU3XPS ,QWURGXFWLRQ The household water pump example application is intended to provide new LOGO! users with a practical programming example that can be followed through step by step. In contrast with the tutorial, the use of the functions learned about is illustrated step by step using an example of a practical application.
'HVFULSWLRQRI7DVN
$SSOLFDWLRQ Nowadays, private households are more and more frequently making use of rainwater alongside the mains domestic water supply. This saves money and helps protect the environment. Rainwater can be used for the following, for example: •
washing clothes,
•
watering the garden,
•
watering indoor plants,
•
washing the car or
•
flushing the toilet.
With a suitable system, rainwater can be collected and used for those types of purposes instead of the mains water.
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([DPSOH$SSOLFDWLRQV 'HVFULSWLRQRIV\VWHP The rainwater is collected in a large water butt. From the water butt it is pumped by a pumping station into a piping system provided for it. From there it can be drawn off in the same way as the normal household water supply. If the water butt should run dry, it can be topped up with mains water. A program is to be created which meets the requirements of a control system for such an installation. The sketch below illustrates how such a rainwater supply system works: Rainwater inlet K4
Mains water inlet
Pressure switch S1
PLC in the distributor box Large water butt for rainwater
Pump M1 S2 Mains water inlet off
S3
Mains water inlet on Trockenlaufschutz Aus
S4
Run-dry prevention on
Connection for household water
5HTXLUHPHQWVRIWKHFRQWUROV\VWHP •
The system must be capable of supplying water at all times. If necessary, the control system must switch over to mains water if the rainwater runs out.
•
The system must not allow rainwater to enter the mains supply when switching over to mains water.
•
It must not be possible to switch on the pump when there is not enough water in the rainwater butt (run-dry prevention system).
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([DPSOH$SSOLFDWLRQV
&RQYHQWLRQDO6ROXWLRQ A pump and a solenoid valve are controlled by means of a pressure switch and 3 float switches that are fitted in the rainwater butt. The pump must be switched on when the pressure in the cylinder falls below the minimum level. Once the operating pressure has been reached, the pump is switched off again following a short overrun period. The overrun period prevents the pump continuously cutting in and out if water is drawn off for a prolonged period. L1
S3
K3
K2
S1 p<
K1
S2
S4
K2
S3
K3
K4
K4
K3
Y1
N Pump
Overrun period
Run-dry prevention
Mains water inlet
,PSOHPHQWDWLRQZLWK/2*2
$GGLWLRQDOHTXLSPHQW In addition to a LOGO! module, you require only the pressure switch and the float switches for controlling the pump. If you are using a 3-phase AC motor, you must use a master contactor for switching the pump. On systems using single-phase AC pumps, you must fit a contactor if the AC pump requires a higher current than can be switched by the output relay Q1. The power of a solenoid valve is so low that it can normally be controlled directly. 7HUPLQDOFRQQHFWLRQGLDJUDP L1 S1 p<
S2
L1 N
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K1
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Mains water inlet
87
([DPSOH$SSOLFDWLRQV )XQFWLRQGLDJUDP The function diagram shows how you can connect up the control system for the pump and the solenoid valve. Its layout corresponds to that of the current flow diagram. Pressure switch
Float switch Run-dry prevention off
I3
Float switch Run-dry prevention on
I4
I1 T = 20 s
Pump
Q1 56
Float switch Mains water inlet off Float switch Mains water inlet off
I3
56
Mains water inlet
Q2
I2
$GGLWLRQDOSRVVLELOLWLHV You also have the possibility of incorporating additional functions for specific applications that would only be possible with the inclusion of extra equipment if you were using conventional technology, e.g.:
•
Pump to be enabled only at specific times, e.g. only in the summer or between particular hours of the day
•
Indication of imminent or existing shortage of water
•
Reporting of system faults
3URJUDPPLQJ
(QWHULQJWKHSURMHFWGDWD Once you have planned your project, you can start to create it in LOGO!Soft Comfort. The first step is to enter the project data in the Properties dialog box, assuming you don’t prefer to start programming right away.
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([DPSOH$SSOLFDWLRQV When working through the succeeding steps, you should remember to save your control program at regular intervals. You may want to open a revised version at some time to test out different possibilities. ,QVHUWLQJWKHIXQFWLRQEORFNV The next step is to place the required function blocks on the Drawing Board. When doing so, remember that apart from the basic and special functions, you also require blocks for the inputs and outputs. At this stage of the process it is sufficient to place the blocks roughly in the position they will need to be in when you connect them up. Precise positioning will be done at a later stage.
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([DPSOH$SSOLFDWLRQV 6HOHFWLQJWKHIXQFWLRQEORFNV Now connect up the blocks according to the plan you made earlier. When connecting up the blocks you should join the connecting line to the output of a block first and then to the input of the destination block. The advantage of this is that when you are connecting to the input pin of a function block the name of the selected pin is displayed. This is particularly helpful with the various pins on the special function blocks.
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([DPSOH$SSOLFDWLRQV 7LG\LQJXSWKH'UDZLQJ%RDUG Some of the connecting lines run over the top of the blocks. As it is at present, the control program layout is not particularly clear. In order to "tidy up" the Drawing Board, you now select connecting lines and, if necessary, blocks and move them around or align them to obtain the best layout for the control program.
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([DPSOH$SSOLFDWLRQV 2SWLPL]LQJWKHOD\RXW If you are left with undesirable but unavoidable intersections between connecting lines, the offending lines can be split using the Split/Reconnect tool. This further improves the clarity of the diagram as it prevents difficulties interpreting the circuit. Otherwise it is difficult in LOGO!Soft Comfort to distinguish between connecting line intersections and junctions.
The program is now finished. Check once again that all connections have been made and set your parameters as you require.
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([DPSOH$SSOLFDWLRQV
6LPXODWLRQ
6WDUWLQJDQGDVVHVVLQJWKHVLPXODWLRQ To test out the control program, you switch to simulation mode. When you start the simulation, LOGO!Soft Comfort checks the program and returns a message that you can view by opening the Message Window. The statistics and any error messages are shown. It also lists the LOGO! models that you can use to implement your project. However, it is not absolutely essential to open the Message Window. The minimum LOGO! model required to run your program is also displayed at the bottom left of the screen on the Status Bar.
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([DPSOH$SSOLFDWLRQV 3URJUDPWHVW Although you already know that your program will run on a LOGO! module, you still have to check that it will actually work as you intend it to. You may also want to adjust certain parameters. You can try out different input values, check the behavior of the system in the event of a power failure and compare your calculations or expectations with the actual behavior of the outputs. The characteristics of the float switches and the pressure switch are the same as for keys. If, however, you wish to simulate the behavior of your circuit, for testing purposes simply change the function of the inputs from keys to switches.
If everything runs as expected, or when you have made any final corrections necessary, you can set about documenting your program.
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([DPSOH$SSOLFDWLRQV
'RFXPHQWDWLRQ
3URJUDPFRPPHQWV Now add comments to your program using the Label tool. Give the inputs and outputs descriptions and make your circuit easy to follow. You do not have to have the terminal descriptions displayed on the screen. Nevertheless, you should make use of the facility so that you can print out a terminal list at some point if you wish.
Pressure switch
Pump
Float switch Run-dry prevention off Mains water inlet off
Float switch Mains water inlet off Mains water inlet Float switch Run-dry prevention on
$UFKLYLQJ Before you download your program, you should save it again. Choose the relevant command from the menu and enter a name for the program and the path to which you want to save it. 3ULQWLQJRXWWKHSURJUDP A printout of the program can be very helpful for planning modifications on paper or if you wish to show the program to friends or colleagues when there is no PC available. The print options allow you to specify the print format and which details are to be omitted from the printed version.
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([DPSOH$SSOLFDWLRQV
3URJUDP7UDQVIHU
([SRUWLQJDQGLPSRUWLQJ You may also need a version of your program in LOGO!Soft format or perhaps you want to combine a program created in LOGO!Soft with your LOGO!Soft Comfort program. If so, you can use the import and export functions to carry out the necessary program conversions. You import a program by opening the file. 8SORDGLQJDQGGRZQORDGLQJ Last of all, you download your program to a suitable LOGO! module and then connect the module up. Connect the LOGO! module to the consumer units in your project. Within a very short space of time, you have now created a control program in LOGO!Soft Comfort which would have required much more time and effort using the conventional method.
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([DPSOH$SSOLFDWLRQV
([DPSOH3URJUDPV ,QWURGXFWLRQ To give you an idea of how versatile LOGO! modules are, we have put together a collection of other applications in addition to the domestic water pump application described in detail above. The examples referred to here are taken from the LOGO! manual. In the LOGO! manual they are described in more detail, in other words showing the conventional solution and comparing it with the simpler solution using a LOGO! module. Here in the LOGO!Soft Comfort manual, we have given a description of the task followed by the finished solution created in LOGO!Soft Comfort. The control programs illustrated are also included on the LOGO!Soft Comfort CD-ROM. 1RWH The LOGO! applications are provided free of charge to our customers. The examples described within them are provided without guarantee and for the purposes of general information as to the possible applications of LOGO! modules and the LOGO!Soft Comfort software. Customer-specific solutions may differ from them. The user is responsible for ensuring that the system operates properly. We would also draw your attention to to the need to comply with any applicable local standards and system-related installation regulations.
&RQYHQLHQFH6ZLWFK
5HTXLUHPHQWVIRUVWDLUZHOOOLJKWLQJ The basic requirements for a stairwell lighting system in an apartment block are as follows: •
When someone is using the stairs, the stairwell lights should be on.
•
If no-one is in the stairwell, the lights should go out in order to save energy.
&RQYHQWLRQDOVROXWLRQ Conventionally, there have been two ways to control such a lighting system as follows: •
Pulse relay: when the lights are off, pressing any of the push buttons switches the lights on. When the lights are on, pressing any of the push buttons switches the lights off again. Disadvantage: people frequently forget to switch the lights off.
•
Automatic stairwell lighting timer: when any one of the push buttons is pressed, the lights are switched on. When a preset time has elapsed, the lights switch off again automatically. Disadvantage: you can’t keep the lights switched on for an extended period. The permanent on switch is usually on the stairwell lighting timer unit which may be difficult or impossible to gain access to.
The wiring for the two lighting systems is identical.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWVROXWLRQ You can use a LOGO! module to replace the stairwell lighting timer or the pulse relay. And you can implement both functions (timed OFF delay and pulse relay) in a single unit. What is more, you can incorporate extra functions without making any alterations to the wiring. In our example program we have combined the advantages of both the pulse relay and the automatic stairwell lighting timer as follows: •
Press push button È lights come on then go off again after the preset delay of 6 minutes (OFF delay)
•
Press push button twice È lights come on and stay on indefinitely (the latching relay is set by the pulse relay)
•
Press and hold push button for 2 seconds È lights go off (ON delay switches lights off - whether on indefinitely or for timed period - in the circuit this branch is used twice)
The external wiring for the lighting system using a LOGO! module is no different from the conventional method of wiring a stairwell lighting system. Only the automatic lighting timer/pulse relay is replaced. /2*26RIW&RPIRUWSURJUDP The control program shows the circuit for an input and corresponding output. You use the OFF delay B02 to set the length of the timed "lights on" period and blocks B03 and B08 to set the time the push button has to be held to switch the lights off. Lights on/off
&RQYHQLHQFHVZLWFK "Lights on" period
Light
You can duplicate the circuit for the remaining inputs and outputs. For example, you could replace 4 automatic lighting timers or 4 pulse relays with just one LOGO! module.
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([DPSOH$SSOLFDWLRQV
9HQWLODWLRQ6\VWHP
5HTXLUHPHQWVIRUYHQWLODWLRQV\VWHP The purpose of a ventilation system is either to bring fresh air into a room or to extract stale air from a room. Let us consider the following example arrangement: •
A room contains an extractor fan and a fresh-air fan.
•
Both fans are monitored by a flow sensor.
•
The pressure in the room must not be allowed to rise above atmospheric pressure.
•
The fresh-air fan must only be switched on provided reliable functioning of the extractor fan is signalled by the flow sensor.
•
A warning lamp indicates if one of the fans fails.
&RQYHQWLRQDOVROXWLRQ The fans are monitored by flow sensors. If, after a short delay, no air flow is registered, the system is switched off and a fault reported which can be reset by pressing the OFF button. Monitoring of the fans requires an analyzer circuit with several switching devices in addition to the flow sensors. The analyzer circuit can be replace by a single LOGO! module. /2*26RIW&RPIRUWVROXWLRQ If you use a LOGO! module you require less switchgear. That saves you installation time and space in the control cabinet. Under certain circumstances it may even allow you to use as a smaller control cabinet. With a LOGO! module you can also stagger shut off of the fans after the system is switched off.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWSURJUDP The system is switched on and off at the inputs I1 and I2. The fans are connected to outputs Q1 and Q2 and the inputs I3 and I4 are connected to the flow sensors. Blocks B07 and B10 are used to set the times after which the flow sensors must send a signal to the fault output Q3. 9HQWLODWLRQ&RQWURO6\VWHP ON switch
Extractor fan
OFF switch Fresh-air fan Flow sensor for stale air
Fault
Flow sensor for fresh air
By negating output Q3 you can also use an output Q4 as a message output. Relay Q4 only drops out if the mains power fails or if there is a fault in the system. The output can then be used for a remote fault indicator.
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([DPSOH$SSOLFDWLRQV
)DFWRU\*DWH
5HTXLUHPHQWVIRUJDWHFRQWUROV\VWHP The entrances to factory grounds are frequently secured by sliding gates. Those gates are only opened when vehicles need to enter or leave the factory grounds. The gate controls are operated by the porter. •
The sliding gate is opened and closed by the operation of a push button in the gatehouse. The porter is able to monitor the operation of the gate at the same time.
•
The sliding gate is normally fully opened or closed. However, movement of the gate can be halted at any time.
•
A flashing light is activated 5 seconds before the gate is operated and while the gate is in motion.
•
A safety pressure strip ensures that persons are not injured or objects trapped and damaged when the gate shuts.
&RQYHQWLRQDOVROXWLRQ There is a wide variety of control systems that are used for operating automatic gates. The OPEN and CLOSE buttons move the gate in the appropriate direction provided it is not already moving in the other direction. Movement of the gate is halted by the STOP button or the relevant limit switch. /2*26RIW&RPIRUWVROXWLRQ In addition to the facilities of the conventional control system, the LOGO! module solution usas a safety strip which stops the gate closing. 5 seconds before the gate is opened or closed, a flashing light is activated which signals that the gate is about to start moving and continues to flash until the gate has stopped moving. In contrast with the conventional solution, the LOGO! module solution of course allows modifications to be made to the control system easily and economically.
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([DPSOH$SSOLFDWLRQV /2*26RIW&RPIRUWSURJUDP The gate is opened and closed by means of push buttons I1 and I2 and a push button connected to I3 can be used to stop the gate. The limit switches for the gate are connected to the inputs I4 and I5 and the safety strip to I6. The motor for moving the gate is controlled via outputs Q1 and Q2 and the flashing light is connected to Q3. Blocks B05 and B07 are used to set the delay period between when the push button is pressed and when the gate starts moving. Block B16 is used to set the flashing frequency of the warning light.
)DFWRU\*DWH&RQWURO6\VWHP Safety strip
Flashing light
Push button for OPEN
Open
Push button for STOP
Close Gate is open
Push button for CLOSE
Gate is closed
Our additional feature opens the gate again automatically if the safety strip is actuated.
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([DPSOH$SSOLFDWLRQV
8QFRLOHU
5HTXLUHPHQWVIRUXQFRLOHU An uncoiler feeds a coiled strip of sheet metal into a punch. The basic requirements for an uncoiler are as follows: •
The metal strip fed in must not be allowed to curl
•
The tension on the metal strip must not exceed a specified maximum level
•
If the tension on the metal strip is too great, the punch must be switched off
&RQYHQWLRQDOVROXWLRQ A key-operated switch is used to change between automatic and manual operation. In manual mode, the uncoiler can be switched on and off with a push button. Three more switches monitor the tension on the metal strip and switch the punch off if it is too taut. /2*26RIW&RPIRUWVROXWLRQ With a LOGO! module, the necessary circuit can be considerably simplified by virtue of the fact that connection of the required switches, warning lamps and master contactor to the LOGO! is all that is required. Using a LOGO! module, you need less switchgear and less wiring. That saves you installation time and space in the control cabinet. Under certain circumstances it may even allow you to use as a smaller control cabinet. /2*26RIW&RPIRUWSURJUDP Inputs I1 to I3 are used to connect the controls for the system. The system’s internal switches for checking the metal strip are connected to inputs I4 to I6. Outputs Q1 to Q3 are used to control the master contactor for the uncoiler motor and the enabling signal for the punch and the warning lamp.
8QFRLOHU Manual mode ON
Manual uncoiler operation
Uncoiler motor on
Strip is slack
Strip is taut
Automatic mode on Punch off switch
Indicator lamp for automatic mode
Enable punch
Other additional functions or the use of the free inputs and outputs for another system can be easily be implemented.
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,QGH[
,QGH[ $ Actual values ......................................................... 19 Alignment .............................................................. 34 AND....................................................................... 53 Applications, other................................................. 97 Archiving................................................................ 95 Archiving programs ............................................... 19 ASi input ................................................................ 50 ASi output.............................................................. 51 Assigning parameters to function blocks................. 8 Asynchronous pulse generator ............................. 83
% Basic Functions tool .............................................. 24 Block comments .................................................... 14 Block numbering...................................................... 8 Block numbers....................................................... 49 Block Properties .................................................... 33 Block properties dialog box ................................... 33 Blocks.................................................................... 49 Bring To Front ....................................................... 32
& Choice of modes ................................................... 23 Clipboard, internal ................................................. 26 Clock buffer ........................................................... 80 Comments tab ................................................. 14, 30 Connecting line intersections ................................ 12 Constants and Terminals tool ............................... 24 Contents of the Clipboard ..................................... 32 Convenience switch .............................................. 97 Copy ...................................................................... 31 Copy selected object ............................................. 22 Counter.................................................................. 71 Creating a program using toolbars.......................... 6 Cut......................................................................... 31 Cut selected object................................................ 22
' Data entry, manual .......................................... 64, 81 Date, current.......................................................... 40 Date, set ................................................................ 40 Determine LOGO! ................................................. 40 Disconnecting the power....................................... 18 Drawing Board....................................................... 20 Drawing Board, description ..................................... 5
( Editing connecting lines ........................................ 11 Editing functions .................................................... 31 Editing objects ....................................................... 11 Enclosing objects .................................................. 10 Entering project data ............................................. 88 Entering terminal descriptions............................... 32 Example application .............................................. 85 Exit ........................................................................ 30
LOGO!Soft Comfort Manual
Export.....................................................................28 Exporting and importing .........................................96
) Factory gate ........................................................ 101 File extension.........................................................21 Fixed signal levels..................................................52 Flag, status ............................................................18 Flags ......................................................................52 Font ........................................................................33 Font color ...............................................................33 Font size ................................................................33 Font style ...............................................................33 Formatting options .................................................33 Frequency inputs ...................................................79 Frequency trigger...................................................78 Function blocks, availability .....................................8 Function blocks, memory requirements.................47 Function diagram ...................................................88
* General properties .................................................29
+ high ........................................................................52 Hours counter ........................................................73 Household water pump ..........................................85
, Input terminals .......................................................50 Input, function ........................................................17 Inputs .............................................................. 16, 50 Inputs for ASi .........................................................50 Inserting function blocks ........................................89
/ Label tool ........................................................ 13, 23 Labels ....................................................................13 Labels, bound and unbound ..................................13 Language setting ...................................................41 Last digits of order number ....................................45 Latching relay.........................................................66 LGO........................................................................28 Limit for OT ............................................................73 Link tool..................................................................23 Linking function blocks, help with ............................9 Linking function blocks, procedure ..........................9 Linking function blocks, rules .................................10 LOGO! applications................................................97 LOGO! Innovation ..................................................45 LOGO! logic module ................................................4 LOGO! model.........................................................16 LOGO! models .......................................................45 LOGO!, 1st generation...........................................45 LOGO!, 2nd generation..........................................45 LOGO!Soft ........................................................ 4, 28 Low ........................................................................52
104
,QGH[ LSC ....................................................................... 21
0 Manual................................................................... 44 Memory area ......................................................... 47 Memory, maximum usable .................................... 47 Memory, required .................................................. 47 Menu bar ..................................................... 6, 20, 25 Message window................................................... 36 Message Window .................................................. 15
1 NAND .................................................................... 54 Nesting depth ........................................................ 48 New ................................................................. 21, 26 NOR ...................................................................... 55 NOT....................................................................... 54 Nudging ................................................................. 11 Number of pages for creating program ................. 41
2 OFF delay.............................................................. 58 ON delay ............................................................... 56 Open................................................................ 21, 27 Opening a program ............................................... 19 Optimizing diagram view ....................................... 10 Optimizing layout................................................... 92 Options: General ................................................... 41 Options: Interface .................................................. 43 Options: Print......................................................... 42 Options: Screen..................................................... 42 OR ......................................................................... 53 or number 0BA1 .................................................... 45 Order number 0BA0 .............................................. 45 Output block .......................................................... 47 Output terminals .................................................... 51 Output, status ........................................................ 18 Outputs.................................................................. 51 Outputs for ASi ...................................................... 51 Overview of user interface .................................... 20
3 Page breaks .......................................................... 12 Page settings......................................................... 28 Page Setup............................................................ 28 Parameter assignment windows ........................... 19 Parameters, displaying current values .................. 19 Paste ..................................................................... 31 Paste object........................................................... 22 Path and file name ................................................ 22 Path, to save program to ....................................... 19 PC connecting lead ............................................... 38 PDF file reader ...................................................... 44 Pin designation........................................................ 9 Positioning............................................................. 11 Positioning function blocks...................................... 7 Power failure ......................................................... 18 Print ....................................................................... 29 Printing .................................................................. 95 Program comments ............................................... 95 Program conversions ............................................ 96 Program path......................................................... 47
LOGO!Soft Comfort Manual
Program paths, overlong........................................48 Program settings....................................................45 Program simulation ................................................14 Program test ..........................................................94 Properties of program to be created ......................21 Pulse relay .............................................................60
5 Recursion...............................................................10 Release date..........................................................44 Remanence characteristics....................................18 Resources..............................................................15 Restart characteristics ...........................................18 Retentive ON Delay ...............................................69
6 Save ................................................................ 22, 27 Save As..................................................................28 Scroll bars ..............................................................20 Select All ................................................................32 Selecting function blocks .................................. 7, 90 Selecting objects....................................................10 Selection tool .................................................. 10, 23 Send To Back ........................................................32 Set Clock................................................................40 Set Clock: entering date/time manually .................40 Signal feedback .....................................................48 Simulation ..............................................................40 Simulation parameters ...........................................41 Simulation tool .......................................................24 Simulation, assigning parameters..........................19 Simulation, starting ................................................14 Solution, conventional............................................87 Solution, implementation with LOGO!....................87 Special functions dependent on LOGO! models....46 Special Functions tool............................................24 Split/Reconnect button...........................................11 Split/Reconnect tool ...............................................23 Splitting links, advantages .....................................12 Splitting links, procedure........................................11 Standard toolbar ............................................... 6, 21 Starting and assessing simulation .........................93 Statistics tab...........................................................30 Status bar.................................................... 6, 20, 37 Status display.........................................................16 Symmetrical pulse generator .................................68
7 Terminal block........................................................47 Terminal Description ..............................................32 Terminals ...............................................................49 Text boxes, bound and unbound ...........................13 Tidying up the Drawing Board ...............................91 Time switch ............................................................62 Time switch, parameter assignment example .......65 Toolbars .......................................................... 20, 36 Tools menu ............................................................37 Tools toolbar ..................................................... 6, 23 Tooltips ..................................................................37 Transfer..................................................................38 Transfer: LOGO! 3&...........................................39 Transfer: PC /2*2...........................................38 Types of text object................................................42
105
,QGH[
8 Uncoiler ............................................................... 103 Undo...................................................................... 31 Up/down counter ................................................... 71 Uploading and downloading.................................. 96 Use of memory ...................................................... 47 User interface, elements ......................................... 6
9 Ventilation system ................................................. 99 Version number ..................................................... 44 View settings ......................................................... 34 Voltage levels ........................................................ 52
; XOR .......................................................................54
< Year clock ..............................................................80 Year clock, parameter assignment example..........82
= Zoom ......................................................................35 Zoom factor............................................................35 Zoom In ..................................................................35 Zoom Out ...............................................................35
: Wiping relay/pulse output...................................... 76
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