Instrument Control (GPIB, Serial, VISA, IVI)

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Communication with GPIB devices fa

ils on Windows NT machine after installing Labview 7. Machine did not previously have labview but was running a stand alone VI, now that VI can no longer talk to the GPIB instruments. The new version of LabView also can not comunicate with the instruments.It is not clear if the system simply can't communicate with the instruments or if it can't communicate wit the GPIB card. The Card is an older GPIB-AT card and the operating system is Windows NT
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ils on Windows NT machine after installing Labview 7. Machine did not previously have labview but was running a stand alone VI, now that VI can no longer talk to the GPIB instruments. The new version of LabView also can not comunicate with the instruments.Did you install the Driver CD with LabVIEW 7? What version of NI-488.2 do you have installed? If you are not sure, you can launch Measurement & Automation Explorer and look at the software version. I think you need version 1.70 of the driver.

From Measurement & Automation Explorer, you should also be able to test the card under Devices & Interfaces.

Let us know what you learn.

Brian
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ils on Windows NT machine after installing Labview 7. Machine did not previously have labview but was running a stand alone VI, now that VI can no longer talk to the GPIB instruments. The new version of LabView also can not comunicate with the instruments.Thanks Brian, I did install the Driver CD and NI-488.2 version was 1,70. It turned out that the board simply wasn't being recognized by the computer. There were two problems. First of all I had added a new P&P DAQ board and by chance the port it plugged into had the same IRQ (11) as the GPIB board default. That wasn't actually what caused he failure though, the other half was that LV7 apparently reconfigured the GPIB software configuration to use IRQ11 but the board was not P&P and the IRQ had been set by jumpers on the board to 15. So the real problem was that LV7 changed the GPIB software settings back to factory defaults.
Thanks for your help.
BR

Matt
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