How can i determine which devices are used at the moment?

Hi all,
I am designing an interface with LabVIEW for uing agilent devices. My work colleagues will use this interface.  I want to determine which devices are used at the moment and if I determine used device, i will add automatically device names to interface's main vi. So all my work colleagues can see on the program which devices are used by another colleague. This devices are connected with GPIB. İ want to learn is there any function on Instrument I/O palette.
Thanks,
Omer
Solved!
Go to Solution.

Hi Omer,
so those devices are connected to the PC with a GPIB connection. Will your collegues run several DAQ programs at the same time?
GPIB-devices being controlled by PC don't have a "in use"-signal. They wait for commands, execute them and send an answer. When you start to control them using two programs they may respond to both programs, mixing up settings/measurement values and so on.
That being said: In MAX you can see all devices connected to your GPIB port. You could scan the GPIB port using VISA commands in your program. You might even try to access a certain device by it's VISA alias. I really don't know if you will get a "device nopt available" error message when that VISA alias is in use by a different program - but you might do a quick test on your own…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

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