GPIB access using PXI-8106

[EttoreMajorana]

I am using a trivial program to use GPIB located on the controller PXI-8106 and connected to a temperature monitor device (Lake Shore). Usually I used the same code directly on the PC, connected by means of old GPIB interface.That worked and my I/O VISA session probed the device properly as GPIB0::18::INSTR . Now, apparently the controller does not sense the GPIB. Apparently, through MAX, the controller works properly and accesses correctly the othe two boards on the chassis (PXI-6143 and PXI-6733). MAX sees Built-in GPIB "GPIB0" into Devices and Interfaces, is it correct ? (it is parallel to the chassis, shouldn't be seen into the Chassis instead ?)

[LiciaP]

Hi Ettore,

so no GPIB port is detected in MAX for the 8106?

Is something detected in Windows Device Manager (if the controller has Windows installed)?

Is driver NI-488.2 installed?

bye,

Licia

[EttoreMajorana]

Indeed MAX sees Built-in GPIB "GPIB0" under Devices and Interfaces (status  Present). But, if I right click on it, the access functions as Scan for Instruments and  Interactive Control ... are disabled. Hence it is clear why the VISA I/O does not probe the instrument connected to GPIB. Yes the NI 488.2 RT 3.1.2 is instaleld in the PXI-8106.

[LiciaP]

Hi Ettore,

if the PXI is running a RT OS, this behaviour is expected.

See here for further explanations on how to communicate with a GPIB device.

I hope this helps!

Bye,

Licia

[EttoreMajorana]

Oh yes the procedure seems to be reasonable, I followed it and into VISAInteractive control I can see finally the device

visa://141.108.12.54/GPIB0::12::INSTR

I can select it and it goes into the bottom box (Resurces to Open)

But in the upper dialog box  (Machine I/O) the system shows localhost only. As I select the wanted PXI after mumble mumble... I get an error

(VISA error Hex 0xBFFF00A7) the remote machine does not exixt or is not accepting  any connections....

[LiciaP]

Hi Ettore,

try to reset the PXI RT target network address, ensuring it is configured properly (for example automatic DHCP address if connected to the network).

Bye,

Licia

[EttoreMajorana]

The IP of the target should be properly configurated (as static). I had already operated severale RT applications.

As I select the correct name of the PXI in the upper box (machine), the box in the middle is no more capable of resolving the devices.