Can't Query Keithley 2400 From LabView

[jvavra]

A piece of production test equipment using a PXI-8840 grenaded itself, so I get the task of trying to replace it with a new system. The tester also uses a Keithley 2400 hooked up via GPIB. I can query the Keithley ID through NI MAX without difficulty, but when I try to do the same through LabView, it fails. I downloaded the "latest" drivers provided here on the 3rd party driver link. 

Sorry, I am pretty new to LabVIEW, but does anyone have any idea why a simple ID query would fail?

[SCastro]

Hi, 

Have you checked this out? This is an article that talks about how to programmatically retrieve the resource name of a VISA device. 

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019KfVSAU&l=en-US

[Minions]

Try using this simple VISA snippet.  Make sure on the front panel to select the instrument in the 'VISA resource name'.  Enter the following into the 'write buffer' including the return below as well.

*idn?

[proland1121]

set VISA resource name to match what you see in NI MAX

[Minions]

Essentially, when you click on the 'VISA resource name' on the front panel, the options should appear.  Select your Keithley 2400 then.

[Minions]

BTW: NI Max and LabVIEW cannot both communicate with the instrument at the same time.  Close the NI-Max communicate with Instrument windows for LabVIEW to operate properly.

[jvavra]

Thanks for the replies guys. I feel foolish: the DMM was just miss-named. I was getting a 1073807346 error. Changed it in NI-MAX and now it's working.