LabView 8.5 stops working with DAQmx with other software running

[mvd]

I have recently encountered a problem with LabView 8.5 while I run the software for a HighFinesse WS-7L wavelength meter (product page). In my VI, I am writing a value to one analog out channel as well as two digital out lines. Every so often with the wavemeter software running, the writing does not occur, although I get no error message and the VI continues to run, seemingly waiting for the writing steps in the sequence to complete. The only way to get the VI working again is to quit and restart LabView. When I am not running the wavelength program, I don't encounter this problem.

Has anyone else experienced this problem, and is there some workaround or explanation for it?

[David_B]

Hi mvd,

I don't have any experience using this hardware, but you mentioned that you are using DAQmx.  How are you connecting to the WS-7L?

Also, have you confirmed the behavior that you describe in the VI by highlighting execution?

[mvd]

David,

I am not actually interfacing with the WS-7L via LabView, but rather have a separate program running provided by the manufacturer. I ended up reinstalling LabView 8.5 this morning, since for some reason that seems to fix bizarre problems like this, and that seems to have done the trick. I really shouldn't have to resort to that, though, so if someone has a better explanation for what happens to require a reinstall, I'd be happy to hear it.

[David_B]

This is generally an issue when a new installation corrupts or uses resources that are intended for a different program or there are conflicts between drivers, etc.  Glad things are working now though.