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Activity 9-1, Create a vi -6, Activity 9-1. create a vi – National Instruments BridgeVIEW User Manual

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Chapter 9

Creating VIs

© National Instruments Corporation

9-7

BridgeVIEW User Manual

Activity 9-1. Create a VI

Your objective is to build a VI.

Imagine that you have sensors that read temperature and volume readings
as voltage. You will use a VI in the

BridgeVIEW\Activity

directory to

simulate the temperature and volume measurements in volts. You will write
a VI to scale these measurements to degrees fahrenheit and liters,
respectively.

1.

Open a new front panel by selecting File»New. If you have closed all
VIs, select New VI from the BridgeVIEW dialog box.

Note

If the Controls palette is not visible, select Windows»Show Controls Palette to
display the palette. You also can access the
Controls palette by popping up in an
open area of the front panel. To pop up, right-click on your mouse.

2.

Select Tank from Controls»Vessels, and place it on the front panel.

3.

Type

Volume

in the label text box and click anywhere on the front

panel.

Note

If you click outside the text box without entering text, the label disappears.
To show the label again, pop up on the control and select
Show»Label.

4.

Rescale the tank indicator to display the tank volume between 0.0
and 1000.0.

a.

Using the Labeling tool, double-click on

10.0

on the tank scale to

highlight it.

b.

Type

1000

in the scale and click the mouse button anywhere on

the front panel. The intermediary increments are scaled
automatically.

5.

Place a thermometer from Controls»Numeric on the front panel.
Label it

Temp

and rescale it to be between 0 and 100.

6.

Your front panel should look like the following illustration.