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Error -63195 While Running FPGA VI in Interactive Mode

Hardware: CompactRIO

Problem:
I have a CompactRIO system and am trying to run an FPGA VI in interactive mode by clicking on the Run button of the VI. The VI seems to compile and download successfully, but as soon as it starts running I see the following error message:

Target Specific Error Encountered
A driver for the target returned the following error. Consult the LabVIEW Help database or the target documentation for the help in resolving the issue.
Error Code: -63195
NI-RIO FPGA Communications Framework: (Hex 0xFFF0925) The handle for device communication is invalid.

Why am I getting this error message and how can I resolve it?

Solution:
This error can occur if LabVIEW automatically closes the VISA session created for communicating with the FPGA backplane of the CompactRIO system. To prevent this, open the Tools » Options dialog, select the Environment category, and uncheck the Automatically Close VISA Sessions checkbox.

If the above step does not fix the problem, open the LabVIEW.ini file located in your labview directory with a text editor (e.g. Notepad). If you have a token that reads cleanupVisa=True, change it to cleanupVisa=False. If this token does not already exist, add cleanupVisa=False to the bottom of the INI file, save it, and restart LabVIEW.

Related Links:
KnowledgeBase 4L586BLX: Why does NI-RIO Error -63186 Occur with LabVIEW FPGA Applications?
KnowledgeBase 3W6FPB1O: Error 1073807346: Error Occured at VISA Open and NI-RIO Open: Given Session or Object Reference is Invalid

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Report Date: 12/11/2006
Last Updated: 12/13/2013
Document ID: 44AF6D45

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