I work for a lab instruments company which uses a USB to IEEE converter. Normally in MAX, we see the interface and then an instrument aligned underneath it. In this one customer's case, it does not . The software appears to be working because our software sees and controls it. This happens both for a normal domain user and also an administrator.
Disconnect all instruments from the bus then begin attaching one at a time. After a new instrument is attached, try the Scan for Instruments. Some GPIB instruments (failing) can lock the bus causing a POLL function to fail.
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Thanks for the reply. I should have included more detail. There is a single Interface (interface 0) with a single device connected directly to the converter. Higher level functions within the software that use the NI driver function as expected - for example, numerical readbacks from the instrument. It just do not show as expected in the MAX application.
