VISA Error Help (-1073807360)

[bwillis88]

Hi.
I cannot communicate with instruments via GPIB using VISA functions in
Labview (VISA Write/Read). However, when I use GPIB Write/Read, it
works just fine. I am using one NI PCI-GPIB, so I know it is Board0.
I am also sure that I am typing the VISA sessions in correctly
(GPIB0::16::INSTR).

I go to MAX, and it tells me:
Error Code -1073807360 ViStatus returned from VISA function call
Descrption viOpenDefaultRM returned 0xBFFF0000

Thanks in advance for any input.
Bill

[John_Howard]

Your suspicion about incorrectly typing the VISA session is probably correct. Try "INSTR::GPIB0::16" or just "GPIB0::16", they should both work.

[Dan_Mondrik]

John:

By the way, "INSTR::GPIB0::16" is invalid syntax and would not work.

I've posted some other suggestions in a separate response. I just wanted to address the resource name issue here.

Dan Mondrik
Senior Software Engineer, NI-VISA
National Instruments