Using 2 different GPIB controller on 2 different PC's

[barbh7]

I want to be able to switch control from one GPIB controller on one PC to a second GPIB controller on second PC.  I tried setting up one of the GPIB controllers as GPIB0 and the other as GPIB1.  I tried transferring control back and forth from GPIB0 to GPIB1.  I have both GPIB0 and GPIB1 not set up as System Controllers using  GPIB initialization.  However, for example, when I attempt a sendIFC from GPIB0 after transferring control back to GPIB0, I get an error in ibsta, status bit.  

I would like information as to setting up this configuration.  Is it necessary, in this case, to set one or both CIC's as (or not as) System Controllers?  Should the other GPIB controller show up in the list of available instruments?

[Albert.Geven]

Hi

If they are connected to the same gpib-bus cable then one of the can be a master.
GPIB is single master. So the other must be slave but there is a way to switch masters.