Seven Habits Of Highly Successful Labview Programmers
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Seven Habits of Highly Effective LabVIEW™ DAQ Programmers Reid Lee Staff Software Engineer Wed Aug 16 10:15-11:30 a.m., 12:00-1:15 p.m., 3:30-4:45 p.m. Exhibit (3D) ni.com
Agenda Expectations Seven key habits and exercises Questions
ni.com
Expectations You should: • be familiar with LabVIEW and data acquisition terminology • have used LabVIEW to build a VI
ni.com
Habit #1 Use Measurement & Automation Explorer (MAX) • Verify hardware • Test panels • Virtual channels – Custom channel names – Scaling
• I/O control in LabVIEW 6i • Product updates wizard ni.com
Habit #2 Research and plan • Start with examples – Solution Wizard – Helps verify signal connections – Lays a solid foundation
• Think architecture – Break application into logical tasks – Consider a state machine approach – Cookie cutting common constructs – Merge VI
Exercise 1 ni.com
Habit #3 Understand the DAQ VI palette • Easy I/O, intermediate, & advanced VIs • Configuration VI placement
Exercise 2
ni.com
Habit #4 Optimize analog input • Intricacies of AI read – Checking acquisition status – Preventing ‘blocking’
Exercise 3
ni.com
Habit #4 (cont.) Optimize analog input • Intricacies of AI read – Using read pointer/offset
1
2
3
4
5
7 points acquired, 2 points read
Exercise 4 ni.com
6
7
8
9
Habit #5 Understand DAQ occurrences • Applications • Benefits – background processing (eliminates polling) – driver does the work – more efficient
Exercise 5
ni.com
Habit #6 Understand data efficiency • • • •
ni.com
Waveform data type (LabVIEW 6i) Binary vs. scaled data Channel to Index and AI Buffer Read VIs Conditional retrieval
Habit #7 Use Profiler • LabVIEW’s Profiler helps you: – Detect memory leaks – Find what VIs your application spends the most time in
Exercise 6
ni.com
Related NIWeek Sessions SP1A – Check Out The Latest LabVIEW • All day today, Exhibit 3A
AT3B – LabVIEW Programming Techniques • Friday, 10:15 AM and 1:45 PM, Ash (10A)
Making Measurements • See page 7 of your NIWeek program – – – – ni.com
Temperature : WS1A & SP1B Frequency : WS1B Strain and Displacement : WS1D Vibration : WS2D
Closing Questions? Solutions for exercises Visit Developer Zone™ – zone.ni.com • • • •
ni.com
Resource library Examples Technical presentations User forums
Agenda Expectations Seven key habits and exercises Questions
ni.com
Expectations You should: • be familiar with LabVIEW and data acquisition terminology • have used LabVIEW to build a VI
ni.com
Habit #1 Use Measurement & Automation Explorer (MAX) • Verify hardware • Test panels • Virtual channels – Custom channel names – Scaling
• I/O control in LabVIEW 6i • Product updates wizard ni.com
Habit #2 Research and plan • Start with examples – Solution Wizard – Helps verify signal connections – Lays a solid foundation
• Think architecture – Break application into logical tasks – Consider a state machine approach – Cookie cutting common constructs – Merge VI
Exercise 1 ni.com
Habit #3 Understand the DAQ VI palette • Easy I/O, intermediate, & advanced VIs • Configuration VI placement
Exercise 2
ni.com
Habit #4 Optimize analog input • Intricacies of AI read – Checking acquisition status – Preventing ‘blocking’
Exercise 3
ni.com
Habit #4 (cont.) Optimize analog input • Intricacies of AI read – Using read pointer/offset
1
2
3
4
5
7 points acquired, 2 points read
Exercise 4 ni.com
6
7
8
9
Habit #5 Understand DAQ occurrences • Applications • Benefits – background processing (eliminates polling) – driver does the work – more efficient
Exercise 5
ni.com
Habit #6 Understand data efficiency • • • •
ni.com
Waveform data type (LabVIEW 6i) Binary vs. scaled data Channel to Index and AI Buffer Read VIs Conditional retrieval
Habit #7 Use Profiler • LabVIEW’s Profiler helps you: – Detect memory leaks – Find what VIs your application spends the most time in
Exercise 6
ni.com
Related NIWeek Sessions SP1A – Check Out The Latest LabVIEW • All day today, Exhibit 3A
AT3B – LabVIEW Programming Techniques • Friday, 10:15 AM and 1:45 PM, Ash (10A)
Making Measurements • See page 7 of your NIWeek program – – – – ni.com
Temperature : WS1A & SP1B Frequency : WS1B Strain and Displacement : WS1D Vibration : WS2D
Closing Questions? Solutions for exercises Visit Developer Zone™ – zone.ni.com • • • •
ni.com
Resource library Examples Technical presentations User forums
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