LabVIEW Basics I Course Manual 6.0.pdf

LabVIEW TM Basics I

Course Manual

Course Software Version 6.0

September 2000 Edition

Part Number 320628G-01

LabVIEW Basics I Course Manual

Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including

photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written

consent of National Instruments Corporation.

Trademarks

LabVIEW™, National Instruments™, ni.com™, and PXI™ are trademarks of National Instruments Corporation.

Product and company names mentioned herein are trademarks or trade names of their respective companies.

Worldwide Technical Support and Product Information

ni.com

National Instruments Corporate Headquarters

11500 North Mopac Expressway Austin, Texas 78759-3504 USA Tel: 512 794 0100

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Contents

Student Guide

A. About This Manual ............................................................................................... SG-1

B. What You Need to Get Started ............................................................................. SG-3

C. Installing the Course Software.............................................................................. SG-4

D. Course Goals and Non-Goals ............................................................................... SG-5

E. Course Map........................................................................................................... SG-6

F. Course Conventions.............................................................................................. SG-7

Lesson 1

Introduction to LabVIEW

A. LabVIEW.............................................................................................................. 1-2

B. Virtual Instruments ............................................................................................... 1-3

C. LabVIEW Environment........................................................................................ 1-6

D. LabVIEW Help Options ....................................................................................... 1-18

Summary, Tips, and Tricks......................................................................................... 1-22

Lesson 2

Creating, Editing, and Debugging a VI

A. Creating a VI......................................................................................................... 2-2

B. Editing Techniques ............................................................................................... 2-11

C. Debugging Techniques ......................................................................................... 2-20

Summary, Tips, and Tricks......................................................................................... 2-25

Additional Exercises ................................................................................................... 2-29

Lesson 3

Creating a SubVI

A. SubVIs .................................................................................................................. 3-2

B. Icon and Connector Pane ...................................................................................... 3-3

C. Using SubVIs........................................................................................................ 3-9

D. Creating a SubVI from Sections of a VI............................................................... 3-16

Summary, Tips, and Tricks......................................................................................... 3-17

Additional Exercise .................................................................................................... 3-18

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LabVIEW Basics I Course Manual

Contents

Lesson 4

Loops and Charts

A. While Loops..........................................................................................................4-2

B. Waveform Charts ..................................................................................................4-4

C. Shift Registers.......................................................................................................4-17

D. For Loop ...............................................................................................................4-26

Summary, Tips, and Tricks.........................................................................................4-29

Additional Exercises ...................................................................................................4-30

Lesson 5

Arrays, Graphs, and Clusters

A. Arrays....................................................................................................................5-2

B. Creating Arrays with Loops..................................................................................5-5

C. Array Functions ....................................................................................................5-7

D. Polymorphism .......................................................................................................5-10

E. Graphs ...................................................................................................................5-13

F. Clusters .................................................................................................................5-30

G. Cluster Functions ..................................................................................................5-36

Summary, Tips, and Tricks.........................................................................................5-45

Additional Exercises ...................................................................................................5-47

Lesson 6

Case and Sequence Structures

A. Case Structure .......................................................................................................6-2

B. Sequence Structure ...............................................................................................6-11

C. Formula Node .......................................................................................................6-16

D. Replacing Sequence Structures.............................................................................6-20

Summary, Tips, and Tricks.........................................................................................6-22

Additional Exercises ...................................................................................................6-23

Lesson 7

Strings and File I/O

A. Strings ...................................................................................................................7-2

B. String Functions ....................................................................................................7-4

C. File I/O ..................................................................................................................7-11

D. Formatting Spreadsheet Strings ............................................................................7-21

E. High-Level File VIs ..............................................................................................7-26

Summary, Tips, and Tricks.........................................................................................7-36

Additional Exercises ...................................................................................................7-37

LabVIEW Basics I Course Manual

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Contents

Lesson 8

Data Acquisition and Waveforms

A. Overview and Configuration ................................................................................8-2

B. Data Acquisition VI Organization ........................................................................8-19

C. Performing a Single Analog Input ........................................................................8-21

D. The DAQ Wizards ................................................................................................8-27

E. Waveform Analog Input .......................................................................................8-32

F. Writing Waveform Data to File ............................................................................8-36

G. Scanning Multiple Analog Input Channels...........................................................8-39

H. Analog Output.......................................................................................................8-43

I. Digital Input and Output .......................................................................................8-47

J. Buffered Data Acquisition (Optional) ..................................................................8-50

Summary, Tips, and Tricks.........................................................................................8-56

Additional Exercise.....................................................................................................8-57

Lesson 9

Instrument Control

A. Instrument Control Overview ...............................................................................9-2

B. GPIB Communication and Configuration ............................................................9-3

C. Instrument Driver Overview .................................................................................9-11

D. Using Instrument Driver VIs ................................................................................9-15

E. VISA Overview ....................................................................................................9-23

F. Using VISA Functions and VIs ............................................................................9-26

G. Serial Port Communication...................................................................................9-31

H. Waveform Transfers (Optional)............................................................................9-41

Summary, Tips, and Tricks.........................................................................................9-49

Additional Exercises ...................................................................................................9-50

Lesson 10

VI Customization

A. Customizing VI Properties....................................................................................10-2

B. Creating Pop-Up Panels........................................................................................10-6

C. Key Navigation .....................................................................................................10-11

D. Editing VIs with Difficult VI Setup Options (Optional) ......................................10-17

E. Customizing Palettes (Optional) ...........................................................................10-21

Summary, Tips, and Tricks.........................................................................................10-27

Appendix

A. Additional Information .........................................................................................A-2

B. ASCII Character Code Equivalents Table ............................................................A-4

C. VI Quick Reference ..............................................................................................A-7

D. Instructor’s Notes..................................................................................................A-13

LabVIEW Basics I Course Manual

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