Communication between two PLCs

Sham

Member
S
Join Date
Sep 2019
Location
Australia
Posts
152
Hi all,
I have two PLCs, M251 of SE, reading data from the same device. One is reading via modbus 485, other one via tcp. I now want the rtu plc to read data from the tcp plc as well, so that it can match the data, and we can be sure that both devices are in sync.
How can this be done? Can I just assign values to modbus registers? How will that be since the RTU plc is already reading from a device?

Thanks
 

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