FPGA RIO Target Issue

[ashm01]

Hi,

I am facing the multiple problems on my system after recompiling the FPGA vi. I
I have the following:
PXI RT Controller 8196, PXI 7833 R connected to a few cRIO modules. Things were working perfectly until we had to modify the FPGA VI. Upon Compilation, it started giving me this error.
 I have already tried the following:

• Repaired RIO (No luck)
• Repaired VISA (No luck)
• Repaired FPGA (no luck)
• Repaired LV RT (no luck)
• ReFORMATTED PXI Controller and reinstalled all software (No luck)
• Ensured that VISA is able to access the PXI 7833R by going into MAX and checking whether I can read/SET vaues. (That works)
• In the process it cannot now load the NI-DMM DLL's. (Disabled DMM code) but still no luck.
  

I also get this error

−1073807346

The given session or object reference is invalid.

when I go into the project explorer and right click on the FPGA device and click reset

Please someone assist on this.

Regards,
Ashm01

[jdigiova]

Can you run the your FPGA VI in emulation mode?  Right click on your FPGA target in the Project Explorer window and go to its properties.  Set its emulation to On- Use Target Hardware for I/O.  Then run the VI?

Regards,

Joseph D.

[ashm01]

Hey Joseph,

Another post in the fieldpoint forums had the same problem... Apparently, if we have the "Autolmatically close VISA sessions" LabVIEW environment setting enabled, we get this error.  Disabling this solved the problem.

Once I disabled this, I was able to control the cRIO modules.

Thanks,

Ashm01