Receiving Notification from LabVIEW

[mrbean]

We have some LabVIEW tests that we kickoff from TestStand that are somewhat asynchronous in nature.  They require that TestStand 'poll' LabVIEW or LV notifies TestStand (either one, I guess) when a certain event has occurred.  Is there a good way to accomplish this?

[AEDavid]

Hi Mr. Bean,

There is a Developer Zone article on Using Default and Custom UIMessages  that should be what you are looking for. 

[AEDavid]

Hi Mr. Bean,

You can make your asynchronous LabVIEW VI write to a shared variable when the event occurs.  Then, in your sequence, you can call another VI that checks the status of that shared variable.  In this way, TestStand can "poll" LabVIEW.

[paulmw]

One time I was able to use both the UIMessages and teststands SyncManager so TestStand didn't have to Poll for a result from LV.  Check out this post where I answered my own question.

Basicly what I did was use a UIMessage and event to tell LabVEIW that TestStand was waiting for a serial number.  The UIMessage passed name of the wait notification into LabVIEW.  TestStand then waited for a notification.  Then when LabVIEW had the serial number from the operator, it used the sync manager to set the notification plus some data in the notification.

I used this in a custion Operator Interface where the serial number entry was not a popup but part of the interface.