Configure the Express VI:

Select your hardware from the Device Selection tree control. The configuration options for the hardware will appear. Set these appropriately. The configuration controls may or may not also be available as input terminals to the Express VI in your LabVIEW block diagram (allowing you to dynamically change the configuration options as your program runs).

Test the Digital Hardware:

When the Express VI is open, press the Run button to test your hardware before integrating the Express VI into the LabVIEW block diagram.

Placing the Express VI in LabVIEW:

After configuring the Express VI click on the OK button. Closing the Express popup will send you back to the Block Diagram of LabVIEW for developing your program.

It is important to understand that if the Express VI shows an input terminal called “stop (F)” and an output terminal called “stopped”, this means that the Express VI should be placed within a loop, and that the Express VI should be terminated prior to terminating the loop.

To accomplish this, wire a Boolean control (such as a front panel stop button) into the stop (F) terminal and wire the stopped terminal output into the While Loops’ conditional terminal. Note that an easy way to create the Front Panel stop control is to right click on the stop (F) terminal and select Create>Control from the menu.