labview proficiency workshop 1

Workshop 1 of 7

Welcome!

Who am I?

Loo Hui Ru 4SEW, FKE UTM NI Penang Digital Hardware Engineer Intern

(Summer 2011) LabVIEW Student Ambassador for UTM Certified LabVIEW Associate Developer [email protected]

5,100 employees More than 1,000 products 600 Alliance Partners

Dr. James Truchard

National InstrumentsLeader in data acquisition technology with innovative modular instruments and LabVIEW graphical programming software

Corporate headquarters in Austin, TX

More than 40 international branches

Fortune’s 100 Best Companies

to Work For Twelve

Consecutive Years

Diversity of Applications

ElectronicsSemiconductors Computers

No Industry > 10% of Revenue

AdvancedResearch Petrochemical

FoodProcessing Textiles

AutomotiveTelecom

ATE Military/Aerospace

Lego Mindstorms NXT

LabVIEW Student Design Competition • Deadline: June 10

• Prizes

• Popular Vote

• First Prize: $750 USD

• Second Prize: $500 USD

• Third Prize: $250 USD

• Critic Vote

• Grand Prize: $2,000 USD

• Trip to NI Week 2011 in Austin, TX

http://www.ni.com/studentdesign/

LabVIEW Certification

Free Weekly LabVIEW Workshop

7 Workshops

x

1 hour Proficiency + 1 hour CLAD

=

2 months of workshops

(with weekly sessions)

Workshop Time and Dates

Session 1: Tuesday, 11am to 1pm.

(13/3, 20/3, 27/3, 3/4, 17/4, 24/4, 8/5)

Session 2: Friday, 3pm to 5pm.

(16/3, 23/3, 30/3, 6/4, 20/4, 27/4, 4/5)

CLAD Examination

• FREE (if and only if) :

• UTM Students

• Attend Workshop with 100% attendance

• Pass Basic Proficiency test

• Done and submit all the homework and project

Today's Topics

What is LabVIEW?

LabVIEW Environment LabVIEW Project

Parts of a VI

Menus & Palettes

Configurations

LabVIEW Data Types

LabVIEW Data Flow

Laboratory Virtual Instrumentation Engineering Workbench

What is LabVIEW?

• Compiled graphical development environment

• Development time reduction of four to ten times

• Tools to acquire, analyze, and present your data

What is LabVIEW?

Measurement and automation application

Start»All Programs»National Instruments LabVIEW 2009

Start from a blank VI:New»Blank VI

Start from an example:Examples»Find Examples…

»

or

Open and Run LabVIEW

Today's Topics

What is LabVIEW?


Parts of a VI

Menus & Palettes

Configurations

LabVIEW Data Types

LabVIEW Data Flow

Use LabVIEW Projects to:• Group LabVIEW files and non-LabVIEW files

• Create build specifications (i.e. stand-alone applications)

• Deploy or download files to targets (i.e. FPGA target)

19

Project Explorer Right Click!

Virtual Instrument (VI)

A LabVIEW Program

Appearance and operation imitate physical instruments eg: oscilloscopes, multimeter, etc

VI

Front Panel Block DiagramIcon and Connector

Pane

1. Front PanelUser interface (UI)

– Controls = inputs– Indicators = outputs

2. Block DiagramGraphical source code

– Data travels on wires from control terminals through functions to indicator terminals

– Blocks execute by data flow

3. Icon/Connector Pane• Graphical representation of a VI• Means of connecting VIs (subVIs)

Virtual Instrument (VI)





– Blocks execute by data flow3. Icon/Connector Pane

• Graphical representation of a VI• Means of connecting VIs (subVIs)

Virtual Instrument (VI)?

Answer: a LabVIEW program





– Blocks execute by data flow

3. Icon/Connector Pane• Graphical representation

of a VI• Means of connecting VIs

(subVIs)

Virtual Instrument (VI)?

* Conn. pane available from FP only

Demonstration: Creating a new VI

Front Panel Front panel Toolbar

Controls Palette

• Contains Controls and Indicators.

• Customize the view.

Front Panel

Demonstration: Front Panel Controls Palette

Front Panel Controls and IndicatorsNumeric Boolean

String

Demonstration: Front Panel Controls and Indicators

Shortcut Menus and Properties DialogRight Click!

Demonstration: Front Panel Shortcut Menus & Properties Dialog

Front Panel Toolbar

Run

Run Continuously

Abort

Pause

Text Settings

Align Objects

Distribute Objects

Resize Objects

Reorder

Context Help

!!! It is best not to use the Abort button because you run the risk of not closing references or cleaning up memory correctly

Block Diagram Block Diagram Toolbar

Block Diagram Terminals

• Block Diagram appearance of front panel objects

• Entry & exit ports that exchange information between the front panel and block diagram

• Analogous to parameters and constants in text- based programming languages

Control Indicator

Constants

Block Diagram Nodes

• Objects on the block diagram that have inputs and/or outputs and perform operations when a VI runs

• Analogous to statements, operators, functions, and subroutines in text-based programming languages

Functions SubVIs

Block Diagram

Functions • Fundamental operating elements of LabVIEW

• Do not have front panels or block diagrams, but do have connector panes

• Double-clicking a function only selects the function – does not open it like a VI

• Has a pale yellow background on its icon

Block Diagram SubVIs• VI that you build to use inside another VI

• Any VI has potential to become a subVI

• Double-clicking a subVI will open it (exception: Express Vis- config. window opens)

• Icon represents subVI in main VI

Demonstration: Block Diagram Terminal

Wires • Transfer data between block diagram objects

• Wires are different colors, styles, and thicknesses, depending on data type

• A broken wire appears as a dashed black line with a red X in the middle

Block Diagram

Scalar1D Array2D Array

DBL Integer Numeric Numeric String

• Press <Ctrl>-B to delete all broken wires

• Right-click and select Clean Up Wire to reroute the wire

• Use the Clean Up Diagram tool to reroute multiple wires and objects to improve readability

Select a section of your block diagram

Click the Clean Up Diagram button on the block diagram toolbar (or <Ctrl>-U)

41

Block Diagram: Wiring Tips

Numeric Controls and Functions(Front Panel) From the

Controls»Modern»Numeric subpalette, select the Numeric Control icon.

(Block Diagram) From the Functions»Programming»Numeric subpalette, select the Add icon.

Mathematical Operations(Block Diagram) From the Functions»Mathematics»Integration and

Differentiation subpalette, select the Derivative x(t).vi

Boolean Controls and Functions(Front Panel) From the

Controls»Modern»Boolean subpalette, select the Push Button icon.

(Block diagram) From the Function»Programming»Boolean subpalette, select the OR icon.

String Controls and Functions(Front Panel) From the

Controls»Modern»String subpalette, select the String Control icon.

(Block diagram) From the Function»Programming»String subpalette, select the Concatenate icon.

Demonstration : Using the Functions and Controls Palette

Block Diagram Toolbar

Run

Run Continuously

Abort

Pause

Highlight Execution

Retain Wire Values

Step In

Step Over

Step Out

Text Settings

Align Objects

Distribute Objects

Resize Objects

Reorder

Clean Up Block Diagram

Context Help

Block Diagram

Demonstration: Searching for controls, VIs, Functions.

Tools PaletteOperating Tool: Change the value of a control.

Positioning Tool:Change position or resize the objects.

Labeling Tool:Enter text in a control, edit text, create free label.

Wiring Tool:Wire objects together in block diagram.

Tools PaletteObject Shortcut Menu tool: access object shortcut menu.

Scrolling tool:Scroll through windows

Breakpoint tool:Set brakpoints on Vis, Functions, nodes, wires, and structures to pause execution.

Probe tool:Create probes on wires on the block diagram

Tools Palette

Automatic Tool Selection Button:Automatically choose a tool.

Color Copy tool:To copy a color to Coloring Tools.

Coloring tool:Color an object.

Today's Topics

What is LabVIEW?


Parts of a VI

Menus & Palettes

Configurations

LabVIEW Data Types

LabVIEW Data Flow

Common Data Types Found in LabVIEW

Polymorphism Definition: a programming

language feature that allows values of different data types to be handled using a uniform interface.

In LabVIEW: the ability of VIs and functions to automatically adapt to accept input data of different data types

i.e. Numeric Functions

Useful when performing the same operation on different data types

Today's Topics

What is LabVIEW?


Parts of a VI

Menus & Palettes

Configurations

LabVIEW Data Types

LabVIEW Data Flow

Data Flow Block diagram

execution is dependent on the flow of data

Node executes when data is available to ALL input terminals

Nodes supply data to all output terminals when done

Data Flow

Which code segment would execute first??

Try it yourself : Creating a simple VI

Create a VI which done the following: X+2Y=Z

labview proficiency workshop 1

Documents

create free

vi menus amp

front panel

tools paletteoperating

block diagram

labview project

front panel

color copy