This document provides an overview of the LabVIEW environment and programming concepts. It describes LabVIEW as a graphical programming language where programs called VIs contain a front panel user interface and a block diagram with code. The block diagram uses dataflow programming with wires to connect functions and represents the execution of the program. Functions are selected from palettes and the connector pane allows passing data between VIs. Common LabVIEW constructs like while loops, for loops, and if/else statements are also covered.

1.  INTRODUCTION
 LabVIEW ENVIRONMENT
 LabVIEW PROGRAMMING CONCEPT
 SOFTWARE CONSTRUCTS IN
LabVIEW

2. INTRODUCTION
• LabVIEW is the acronym for Laboratory
Virtual Instrument Engineering Workbench
• It is a Graphical-based programming language
• VI (virtual instrument) is the basic LabVIEW
element
• Programming languages such as C, C++,BASIC
use functions and subroutines LabVIEW uses
VI

3. BENEFITS
Extensive Interface - Even people with limited
coding experience can write programs and
deploy solutions in reduced time interval.It
also includes An interface to .NET framework
assembly
 Code Reuse and Platform independent -The
G-code is independent of the operating system
Parallel Processing- Easy to code programs
with multiple tasksperformed in parallel by
multithreading

4. APPLICATIONS OF LabVIEW
Machine monitoring and control :LabVIEW
Real-Time module helps in preparing powerful
machine monitoring and control applications
 Research and Analysis : Scientist and
Researchers use it biomedical ,aerospace
energy industries etc .
 Control Design : Real world data can be
compared with theoretical data .

5. Analogy between LabVIEW and C
• VI FUNCTION
• DRAG-DROP UNITS COMMANDS
• BLOCK DIAGRAM COMMAND WINDOW
• FRONT PANEL USER INTERFACE
• FILE EXTENSION .VI .C
• MATH-SCRIPT math.stdio
and lot more …..

6. FRONT
PANEL•
BLOCK
DIAGRAM
CONNECTOR
PANE

7. LabVIEW Environment
A VI has three main parts
A. Front Panel
B. Block Diagram
C. Connector Pane
 Front Panel: Interacts with the user
 Block Diagram: Contains the code
 Connector Pane: Method of connecting to other
VI’s

8. Front Panel
• Right click controls palette pop's up
• Connector pane (terminal connector) is a part
of front panel
• Caption and Label both are front panel
properties
• Traditional Debugging features not available
for front panel

9. FRONT PANEL
It is the user interface

10. Block Diagram
• Label is block diagram property
• Right click functions palette pop's up
• Traditional debugging features and clean up
diagram option(ctrl+u) available only for block
diagram

11. BLOCK DIAGRAM
It contains the code

12. Connector Pane
Means of Passing Data to other VI
The Connector Pane terminals display
the color of data

13. CONNECTOR -PANE
Means of passing data to other VI

14. BUILT-IN-HELP
 This is enabled by selecting this item from
the Help pull-down menu
 If the cursor is placed over the particular
button, a small box pops up with its
description
It is also activated from the Help pull-down
menu by selecting Show Help (Ctrl+H)

16. LabVIEW Programming Concept
LabVIEW follows Data-Flow programming
The process to determine the execution of
program is called Arbitrary-Interleaving
During compilation the VI compiler constructs
a wired table
LabVIEW functions are polymorphic
 LabVIEW is not an interpreted language it is
compiled behind the scenes by LabVIEW’s
execution engine

17. LabVIEW constructs a wire table for the VI
This wire table identifies elements in the block
diagram that have inputs needed for that
element to run
A LabVIEW program is executed by pressing
the arrow or the Run button located in the
palette along the top of the window

18. LabVIEW has three palettes
o Functions Palette
o Control Palette
o Tools Palette

19. CONTROL PALETTE

20. Invoke the control palette by clicking
VIEW-CONTROL PALETTE or by right clicking
on the front panel
 The controls are grouped into categories in a
tree
The sub palettes have a lock in the top left
corner to keep the window visible while you
are working with the controls

21. FUNCTION PALETTE
 Invoke the function palette by VIEW-
FUCNTION PALETTE or by right clicking on the
block diagram
 The functions are grouped into categories

22. TOOLS PALETTE

23. VARIOUS TOOLS
 Automatic tool selection
Operating value
 Positioning
Labeling
Wiring
Short-cut menu
Scrolling
Breakpoint
Probe
Get color
Coloring

24. DATA TYPES
 Numeric
String
Dynamic Data type
 Boolean
Enum
Ring
Waveform
Variant
Timestamp

25. STRUCTURES
 While-loop- Executes at least once then
execute the conditional terminal
For-loop- for(i=0,i<N,i++)
If-Else – if (condition) body1
else body2
Switch – switch (case1)
(case2)……

26. •FOR LOOP
N=count terminal
i=iteration count

27. WHILE LOOP
i=Iteration count
Stop Button =test for stop condition
(by default it is stop if true)

28. If-Else
if ‘?’ gets value 1, T is executed
if it gets value 0 ,F is executed

29. SWITCH CASE
(MULTIPLE CASE)
? – CONDITIONAL TERMINAL
UPPER BOX DISPLAY THE CASE NUMBER