How do i program GPIB devices in Labview using and agilent 82357B

[JonBowers]

Hi Kevin,

I am not sure what else to suggest. What version of LabVIEW and NI-VISA are you using? Can you try the LabVIEW <-> GPIB example (Example finder>>Hardware input and output>>GPIB) and put in 10 for the GPIB address. The only thing I can really suggest is to make sure you have the latest version of NI-VISA.

Jon

[kevweath]

Hi Jon,

I had to upgrade to the latest version of visa to get the resources to show up in max at all. When i run the LabVIEW<->GPIB.vi i get an error 7 message (non-existent board).

I've attached a screen grab. If you are unable to help further can you suggest anyone who may be able to? 

[Dennis_Knutson]

You cannot use the GPIB functions with a non-NI controller. You have to use VISA.

[kevweath]

Fair enough. But i don't know how to do this. Please see my original post. Can you offer any advice for tutorials to follow or example code which may help me? I have never used visa as i have only ever had to program digital patterns in LabVIEW.

[Dennis_Knutson]

A good place to look is at some of the instrument drivers. The 34401 has shipped with LabVIEW for as long as I can remember. The basic VISA functions (VISA Read and VISA Write) are equivalent to a GPIB Read and GPIB Write. There's also a tutorial at http://zone.ni.com/devzone/cda/tut/p/id/3702 that you might find helpful.

[kevweath]

This problem was resolved by uninstalling NI visa 4.1 and then re-installing it. There had obviously been some problem with the link between LabVIEW and visa. Now a drop down list appears in the visa resource name and my instrument appears on it. The example codes for the Agilent generator now work fine.

Many thanks to Jon

[Casparv]

Hi,

I'm having the exact same problem as Kevin was having, although a full reinstall of VISA doens't solve it. In MAX, everything works fine, so I can communicate with my GPIB devices there, but when I try to get a drop down listing for a VISA I/O control in labview, it gives an empty list and crashes after that. Any more ideas that might help to solve this?

Thanks in advance,

Caspar

[Yoann029]

Hi,

I have the same problem. I have reinstall VISA 4.2 with NI-Serial 3.3 after installing Agilent I/O 14.2 and it still does not work.

One solution to still be able to communicate with, is not using VISA control or VISA constant but simply text control or constant. Use directly the ressource not the alias.

I have joind an example.

With 82357B connected Labview loses the aliases (still do not know why)

Regards,

Yoann

[SimonJin]

Hi,

I have exactly the same problem. Everything's fine, GPIB to USB is detected through Agilent IO expert. NI MAX shows the CPIB connection. But now pull-down option from LabVIEW.