PLC application validation using OPC and teststand

[pdanis]

Hello

I want to test a PLC application using teststand as script generator. My idea is to use TestStand to generate testcases and verify answer (read status variables, tags)

from the PLC to confirm its code meet requirements.

So question is, can TestStand read ad write PLC tag variables, using an OPC server ?

Did anybody else use this strategy before ?

Pierre Danis

[Duffy2007]

Hello Danis,

TestStand can not directly communicate with a PLC. What you can do, is to create custom steps in

LabVIEW, C, .Net and so on in this the communication with the OPC can be done.

Now the test developer can use this steps to made a sequence for testing the PLC.

[Jean-Louis]

Pierre,

For your information, there is a new TestStand Add-on "OPC DA Connect" which adds a StepType Palette dedicated to OPC Data Access.

You can configure each step by browsing the OPC servers on your network and browsing variables within these servers.

This toolkit has free deployment licence.

Hoping this helps.