6430 GPIB connection

[ckim]

Hi,

In my lab, we've been using Keithley 6430 connected to computer via Labview program.

But there is a problem with 6430, so need to send it to Keithley for service.

We have extra 6430, but simply plugging in GPIB connection to new 6430 doesn't work.

(When we run the labview program, it says there is no connection)

Is there specific things we need to do recognizing the new instrument via labview program?

[Dennis_Knutson]

You need to set the address to what the old one was, especially if you have the address hard-coded in the program. You also need to make sure the instrument is enabled for GPIB.

Before running the program, you really should check the connection in MAX (Measurement & Automation Explorer).

[ckim]

Thank you for your answer.

I checked MAX first. the new one is recognized by MAX with new GPIB address.

But still labview program doesn't work.(it shows error message saying that possible reason is 'memor is full')

Let me try more.

Thanks. 

[Dennis_Knutson]

Why would you use a different GPIB address? I would not expect your program to work unless you did something clever in the programming so that you would recognize the instrument no matter what the address is. Does your LabVIEW program do that? If no, set it to the same address.

Also, that error message is not something returned by VISA or GPIB functins. Since the driver is written and supported by Keithley, you should check with them if you continue to get the same error. It sounds like it might be an IVI driver and you should check to make sure the IVI configuration is still okay.

Message Edited by Dennis Knutson on 09-07-2009 12:46 PM

[ckim]

Thank you for your answer.

MAX just assigned different GPIB address.(tried to change to back to original one, but didn't work for unknown reason)

Our labview program can modify GPIB address at the beginning. But whatever the GPIB address we use, the error message is same.

Anyhow, thank you for your help.

We will try more. 

[Dennis_Knutson]

MAX is just not capable of changing the GPIB address of any instrument. Read the manual in order t find out how to set the address of the instrument.