My LabVIEW Application works 2 separate relays of a PXI-2569 board using the Switch Executive niSE Connect/niSE Disconnect VIs. I have defined the respective routes in my niSE Virtual Device. Called separately the connect/disconnect VIs work just fine. In my current Application there is a loop containing a niSE Connect of Route1 and a niSE Disconnect of Route2. Both calls are not put in any sequence, so they may execute in parallel. Repeatedly connecting or disconnecting the same route results in an error message, but that is accepted - I am not discussing application design here. What worries me is the fact that every now and again the niSE Connect function returns the error message -2904 ("You cannot disconnect a route that does not exist") that clearly belongs to the niSE Disconnect call. It seems that both calls somehow interact on a driver level and then show unpredictable results. I can put the calls in sequence within this small application, but it leaves me rather scared to use Switch Executive VIs i a context where switching activities go on in different parts of a larger program. I am using LabVIEW 7.1 and SwitchExecutive 2.1 Anyone care to comment? Thanks Anke

Switch Hardware and Software

problems executing Switch Executive connect/disconnect in parallel (LabVIEW)

Anke,

I'm glad that the code is working for you (so far). Sure, if you ever want to revisit the original issue, feel free to post here in the forums (this thread or a new one is just fine) and we'll try to figure it out.

I agree with you a 100% on the perfectionism issue. All things have their place and their time.

Best wishes in your future development,

-Serge

Srdan Zirojevic