GPIB error in LABVIEW 8.2

[radiofysik]

Hello

I was using my labview program correctly and since yesterday I can not use GPIB write and Read in my program. I'll attach the error message so it is easier to understand what I'm taling about.

I'm using Agilent 82357B GPIB-USB, two Keitlhey equipments and Labview 8.2.

 Visa resouce name is working fine,as you can see in the first attachment, but when the program starts I have an error (in the second attachment) that I just don't know how to solve. 

Any ideas?

Thanks

[Hillman]

Hi Radiofysik,

Thanks for the post and I hope your well today.

If the code worked fine previously then I would suggest either the PC has lost communication with the or you board has changed number.

I would suggest using the "Scan for Instruments" functionality of Measurement and Automation Explorer - this will usually return the valid address for your instrument. This is especially useful if you are unsure of its current setting.

This should confirm if the device is connected correctly and then we can focous on the code somemore.. I would also try an example program and test *IDN? You can find an example in labVIEW by going to find examples>>and search GPIB.

Please let me know how you get on,

Hope this helps.
James.