09-24-2018 04:40 AM
HI
I use cRIO-9039 and mod 9871 to communicate with RS-485, i alsow use modbus library.
Everything is working while i using USB/RS-485 converter but failed when i try to send orders to my device by cRIO.
I get only Timeout error (56).
I use Scan Interface.
I use port ASRL11::INSTR. I pluged the in the power to my device (mod 9871).
Do you have any idea why it happen?
09-25-2018 09:18 AM
Hello,
Did you see this KB?
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019Lz2SAE
09-26-2018 05:44 AM
Hi,
Thank for your replay. I use modbus protocol and i communicate with devices - i only have access to their address at RS485. I tried everything from this KB but i didn't find anything useful.
Mark
12-19-2019 09:43 AM
hello, I get the same problem as you and I would like to know if you were able to solve it.
I want to do a Modbus RS485 communication with SB-RIO 9626 in order to control a temperature.