How can a cRIO access VISA resources of remote systems?

[Woss]

I have a RS485 module NI 9871 on a 9148 ethernet RIO.

I also have a laptop and a 9073 cRIO.

I can access each of the the 9871 serial ports from the computer but not from the 9073.

When trying to access from the cRIO, I get error: -1073807192, VISA:  (Hex 0xBFFF00A8) Access to the resource or remote machine is denied. This is due to lack of sufficient privileges for the current user or machine.

How can the cRIO access the serial ports of the 9871 module on the ethernetRIO?

Or how can a cRIO access remote visa ressources?

Or how can a cRIO have sufficient privileges to access remote visa ressources?

Thank you for your help.

Labview 2010 & VISA 5.1 on pc

NI-RIO 4.0 & VISA 5.1 & NI SERIAL 9871 scan engine support on both cRIO and eRIO

[KateB]

visa://192.168.1.201/ASRL1::INSTR

[Woss]

visa://192.168.1.201/ASRL1::INSTR

if the IP of the ethernet RIO is .1.201, this works from the computer, but not from a cRIO.

for example, if the cRIO IP is .1.202:

The cRIO can access its own RS232 using this: visa://192.168.1.202/ASRL1::INSTR

But it cannot access the ports of the ethernet RIO and using this gives error -1073807192: visa://192.168.1.201/ASRL1::INSTR

[Zach J · Accepted solution]

Hi Woss,

It is possible your Ethernet RIO has some access settings enabled that is disallowing the connection to be made to the serial ports.  You can change these settings in Measurement and Automation Explorer (MAX) for your device by going to the device under Remote Systems, expanding the Software category under it, and selecting NI-VISA.  There will be a tab in the right panel of MAX that is called VISA Options.  In that tab, select VISA Server>>Security to access these settings.  

From there, you should be able to add the IP address of the RIO device that needs to access the VISA Server on your Ethernet RIO.  Once you have modified these settings, just click Save at the top of the window and allow the device to reboot.  Let me know if that helps!

[Woss]

Thanks a lot BK, that did the trick.