Change Primary Address GPIB Interface on Real Time Target PXI

[Simone Galigani]

Hi, I'm Simone

I've a simple little question, someone can help me??

I've try to find answer by I don't find a solution in the documentation.

My system is based on a Real Time target NI PXI-8196, and I work with LabView 8.0.1; i need to change the primary address of GPIB embedded interface on real time target but I don't know how. I'm sure that it's probabily very simple but..... I try to change GPIB.INI configuration file on real time target system directory but don't see any change....

Thanks

[AlessioD]

Is there any specific reason you are willing to change the PAD of your GPIB interface?

Usually the GPIB controller is set to PAD=0. This is why I am asking.

let me know,

AlessioD

[Simone Galigani]

Hi AlessioD,

my system works correctly with PAD 0 for the controller but i think that is important to understand how manage the GPIB interface and the change of the primary address of the contoller is sure a primary goal.

Thanks

Simone

[AlessioD]

I have tried to change the GPIB.INI file on the RT target. After modifying the PAD parameter from 0 to 1 for example, I saved the ini file on my local machine and then FTPed it back to the controller and rebooted.

I checked the PAD assigned to the GPIB interface with the attached VI and everything seems to work.

Could you try it out?

AlessioD

[Simone Galigani]

Thanks of your support Alessio,

I have tried your VI but on the real time target return an error. I don't know why.

When I tried to change the GPIB.INI file on the RT target and use the notebook with PCI-GPIB+ and GPIB-Spy, last day,

the primary address don't change but i don't remember if i've reboot the contoller (i think yes, but i don't sure and now i don't have the notebook to retry!!).

Thanks, and sorry for my english!

Simone

[AlessioD]

From MAX>>Tools>>NI-VISA>>Interactive Control (see picture 1) you should query for VISA resources on the following target

visa://ip_address_pxi/?*

From the list select the GPIBn::INTFC which is the integrated GPIB board on the 8196 and double click on it to open a visa session (picture 2).

You should be able to get the value for the GPIB Primary Address

[Simone Galigani]

Good Alessio,

now I see the GPIB0::INTFC but, even if with the Interactive Control seems to work correctly, but

when I modified the GPIB.INI on real time target (PAD=1 on PCI-GPIB interface) and reboot the 8196, I try to read

the primary address and the interactive control show "0".

Why in the VISA constan name (click on refresh) I see only the GPIB Visa Alias of the GPIB on board interface

that I have set on MAX? , for try I've to write himself the "GPIB0::INTFC" string inside VISA resource name.

And the Property Node of GPIB Instruments, the member Primary Address is only read, it's impossible to set at run time ?

Bye Simone