LabVIEW- Laboratory Virtual Instrument Engineering Workbench, by National Instruments is a system-design platform and development environment for a graphical language – visual programming language, LabVIEW is commonly used for data acquisition, instrument control, and industrial automation on a variety of platforms. LabVIEW Basics - 01 | Introduction. LabVIEW is a graphical programming language used by professional scientists and engineers as well as students, hobbyists. Welcome to LabVIEW. The purpose of this manual is to get you up to speed with the basic concepts of LabVIEW and graphical programming. LabVIEW programs are called virtual instruments, or VIs, because their appearance and operation often imitate physical instruments, such as oscilloscopes and multimeters.‎Controls Palette · ‎Controls and Indicators · ‎Terminals · ‎Controls, Indicators, and.


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Use string indicators to display text to the user.

LabVIEW Environment Basics - National Instruments

The most common string objects are tables and text entry boxes as shown in Figure 5. String Controls and Indicators Block Labview basics Block diagram objects include terminals, subVIs, functions, constants, structures, and wires, which transfer data among other block diagram objects. Example of a Block Diagram and Corresponding Front Panel After you create the front panel window, you add code using graphical representations of functions to control the front panel objects.

The block diagram window contains this graphical source code. Block Diagram Back to top Objects on the front panel window appear as terminals on the block diagram.


Terminals are entry and exit ports that exchange information between the front panel and block diagram. They are analogous to parameters and constants in text-based programming languages.

Types of terminals include control or indicator terminals and node labview basics.


Control and indicator terminals belong to front panel controls and indicators. Data points you enter into the front panel controls a and b in the previous front panel enter the block diagram through the control terminals.

The data points then enter the Add and Subtract functions. When the Add and Subtract functions complete their calculations, they produce new data values. Labview basics, Indicators, and Constants Controls, indicators, and constants behave as inputs and outputs of the block diagram algorithm.

Basic LabVIEW - Tutorials

Consider the implementation of the algorithm for the area of a triangle: Area of a Triangle Front Panel Labview basics user does not change or access the constant 0. This block diagram has four different terminals created by two controls, one constant, and one indicator.

The first is an arrow on labview basics terminal that indicates the direction of data flow. The controls have arrows showing the data leaving the terminal, whereas the indicator has an arrow showing the data entering the terminal. The second distinguishing characteristic is the border around the terminal.

Controls have a thick border and indicators have a thin border.

You can view terminals with or without icon view. Figure 10 shows the same block diagram without using the icon view of the terminals; labview basics, the same distinguishing characteristics between controls and indicators exist.

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labview basics They are analogous to statements, operators, functions, and subroutines in text-based programming languages. The Add and Subtract functions in Figure labview basics are function nodes.

Functions do not have front panel windows or block diagram windows but do have connector panes.

Introduction to LabVIEW

Double-clicking a function only selects the function. You can reuse a subVI labview basics other VIs. To create a subVI, you need to build a connector pane and create an icon. A subVI node corresponds to a subroutine call in text-based programming languages.