PXI-8421, RS-485

[Muqtadir]

I am unable to make coummunication with RS-485 Confuigurtaion, iam using PXI-8421 RS-485 Serial. i have conneted the  R+, R- on Pin (4,5) and T+,T- on Pin (8,9), Pin 1 is GND. please advice for solution.

Regards,

M A Muqtadir

[Chris G in AE]

Hey Muqtadir,

I have a few links that might be helpful for you to diagnose your 485 communication problem.  The first step I'd take is to do a 485 serial loopback test to make sure that your software is communicating correctly.  Then if it's still not working, check out What Pins Are Needed for 2- and 4- Wire Transmission with RS-485 Serial Communication and Serial Board Passes Diagnostics, but Unable to Communicate in 2-wire Mode. 

Let me know if those links help you out at all with this issue.  If you're still having problems, please provide a more detailed description of your hardware and software setup so we can look into more specific solutions. 

Thanks, and have a great day!

Sincerely,

Chris G in AE

[Muqtadir]

Hi Chris,

Thanks for help now i can communicate the instrument to data logger by using your hints. thanks a lot.

Regards,

M A Muqtadir