Can NI-Device be multiple addresses on 1 interface?

[TheWaterbug]

We develop instrument cards in CompactPCI that use NI-Device and a PXI-GPIB card for their GPIB interface.

We'd like to be able to put multiple instrument cards in the same CPCI chassis with the one GPIB card, but give each instrument a different address. This is important for backward compatibility with our existing line of equipment, because many of our customers have systems set up and software written to expect two different devices at two different addresses.

Can this be done with NI-Device? Ideally I'd want to route incoming commands on address 14 to one piece of software and incoming commands on address 15 to another piece of software, etc.

I guess the best analogy I can make for what I want would be si
ngle-node multi-homing for TCP/IP. For example I can have a two applications using two different IP addresses on the same Ethernet card. I'd like to do the analogous thing in GPIB using NI-Device.

Thanks!

[pavanb]

Hello:

I found a web resource that you will find useful. If you go to ni.com >> Support >> Search (option 3) and type "ni-device" you will get it. The first KnowledgeBase "What Is NI-Device and When Should I Use It?" says that with NI-Device 1.01 & NT 4 you can emulate multiple GPIB devices.

Hope this helps. If you have any questions, please let us know.

-NI Support.

[GPIB_Guru]

The standard version of NI-Device does not support multiple listening addresses for a single GPIB board. However, NI-Device version 1.0.1 does support multiple device simulation. There are a couple of restrictions, however, including the fact that you must be running Windows NT4. Currently NI-Device 1.0.1 only supports the PCI-GPIB board, but if you send me an email, we can discuss some options with the PXI-GPIB board.

Thanks,
Eric Singer
eric.singer@ni.com