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VISA GPIB blocks the VISA RS232

Hello All
I run two instrument, one on GPIB and the second on RS232. They are running at the same time.
Unfortunatelly sometimes my GPIB instrument stops and reports error and dialog box appears (after closing the GPIB VISA session). But the worst is that than the RS232 readings stops also.
When I press OK to the error dialog and dialog closes than the RS232 starts again.
Those two vi's are working completelly independently, in two different windows.
How come that the dialog box stops the another vi.
It must be some modal window, which freeses everything.

Is there any solution for thiat problem?

Thank in advance
Pawel
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Pawel:

This does not sound like a VISA issue. The 2 interfaces execute independently of each other. I think the problem is that you have at least 1 VI running in the UI execution system of LabVIEW. You should change its execution system by modifying the VI properties.


Dan Mondrik
Senior Software Engineer, NI-VISA
National Instruments
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