Answer question
Communication using Modbus RTU between two AC500-eco PM554 PLCs.
Good morning,
I am trying to communicate two AC500-eco PLCs via Modbus RTU. I am connecting them with the TK682 cable. In Automation Builder the configuration of the interfaces for both PLCs have been done in COM 2 > (Modbus). I´ve established one of them in operation mode Client (Master) with address 0 and the other one as a Server (Slave) with address 2.
As far as I´ve researched, everything with the Modbus addressing is fine. In the master program, using the FB COM_MOD_MAST , I am starting to write from %MW0.500 register just sending a bool encapsulated in a word but I´m not receiving anything in the Slave.
In addition I'm getting ERRNO 8211 which error description is: Timeout
COM_MOD_MAST: Slave did not respond within the specified time
HA..: No Ethernet link
Can someone please give me an example of how to communicate these two using Modbus RTU?
Regards,
I am trying to communicate two AC500-eco PLCs via Modbus RTU. I am connecting them with the TK682 cable. In Automation Builder the configuration of the interfaces for both PLCs have been done in COM 2 > (Modbus). I´ve established one of them in operation mode Client (Master) with address 0 and the other one as a Server (Slave) with address 2.
As far as I´ve researched, everything with the Modbus addressing is fine. In the master program, using the FB COM_MOD_MAST , I am starting to write from %MW0.500 register just sending a bool encapsulated in a word but I´m not receiving anything in the Slave.
In addition I'm getting ERRNO 8211 which error description is: Timeout
COM_MOD_MAST: Slave did not respond within the specified time
HA..: No Ethernet link
Can someone please give me an example of how to communicate these two using Modbus RTU?
Regards,
