HP5350B does not not at the controls GPIB

Hello

I have been using the HP5350B, an old frequency counter HP for a remote control application. I use the GPIB commands to send and receive messages from the instrument. I have attached the screenshot of code that uses a GPIB read block to read the value of the instrument. Earlier, when I used a connector of the GPIB-USB-HS, I was able to get the values you want by using this code. Recently, I got a PCI-GPIB, I installed in my computer and since then have tried to read measages of the instrument with this card in the computer, but I did have a success to reading the value of the instrument using the same code. I get the error shown in the attachment. The only difference I found between the GPIB-USB-HS and card PCI-GPIB is the change of the address of the instrument for GPIB1::7:INSTR(for_PCI-GPIB_card) to GPIB0::7:INSTR (GPIB-USB-HS), who appeared in NI MAX.

Now when I connect the GPIB-USB-HS to the computer and try to communicate with the device with the same code I am unable to reproduce the results I was getting earlier. I'd appreciate your feedback to help me solve this problem.

Thank you

Vivek

Directly from the LabVIEW help file

When there are several controllers GPIB that LabVIEW can be used, a prefix of the string address in the form ID:address (or ID: If no address is required) determines the controller that uses a specific function. For example, to set the GPIB 2 controller to talk to a device at address 3, use the prefix 2:3. If a controller ID is not present, the function by default controller (or bus) number 0.

You have changed your hardware configuration, such as '7' is no longer unambigeous.  Use ' 0:7 ' or ' "1:7".

Tags: NI Hardware

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