is there any specific command to search the PXI slot for non NI instrument card to get the ID of that. I don't know abou the NI visa ....will it help me to get the details of the non NI instrument on the PXI chasis.
"If you are using third party modules, it depends on how they present their functionality. We recommend that vendors write instrument drivers and use VISA to do the I/O for both VXI and PXI. An example of a company that has done this is Ascor - you can use their switch modules with their instrument drivers and VISA makes that work seamlessly."
The reason for this is that there can be only 1 kernel level driver that can communicate with a given device. If the 3rd party vendor wrote their driver using NI-VISA, then NI-VISA will find it with viFindRsrc, as Trey mentioned. Otherwise, if the 3rd party vendor wrote a Windows-specific kernel driver, then there is no way that NI-VISA can find out any information about, or access, that device. An example of this is a CompactPCI plug-in SCSI or Ethernet card, which comes with a standard off-the-shelf driver shipped with the Windows OS. NI-VISA does not report such devices.
Dan Mondrik Senior Software Engineer, NI-VISA National Instruments