adccommunitymod (AutomationDirect) asked a question.
Dl06 plc modbus rtu comms with solo 4849lre tmp cntrl
Created Date: February 19,2016
Created By: jcuria
**** This post has been imported from our legacy forum. Information in this post may be outdated and links contained in the post may no longer work.****
Having problems with MODBUS RTU communications between my DL06 PLC and SOLO Temp Controller 4896LRE via RS-485 serial link. Have configured both units to same communication parameters and am using MRX ladder logic instruction to read register address 44097 using function code 3. I am able to write values to register address 44098 using MWX function code 16. Anyone out there have a clue what I'm missing?
Created Date: February 19,2016
Created by: scott.lawrence
several things could be wrong, without seeing your code, there is really no way to tell...
usually, it's addressing that throws a kink into MRX/MWX communications.
take a look at the two screenshots linked here, it shows a DL260 communicating with three SOLO controllers to read/write temperature data
http://imgur.com/a/hFU1S
Created Date: February 19,2016
Created by: jcuria
Having problems with MODBUS RTU communications between my DL06 PLC and SOLO Temp Controller 4896LRE via RS-485 serial link. Have configured both units to same communication parameters and am using MRX ladder logic instruction to read register address 44097 using function code 3. I am able to write values to register address 44098 using MWX function code 16. Anyone out there have a clue what I'm missing?