Xlr pro repeater using modbus tcp/ip protocol

Have a small SCADA system with multiple plcs out in the field. I would like to have one master site talking to two repeater sites which than talk to multiple plcs over ethernet via modbus tcp/ip. I know you can’t use repeater mode while in bridge mode, so how would i go about doing the repeater?

For tcp/ip use python library to access the plcs.
If its ModbusTCP Then go for nmodbus (.net) there is library in python as well but i have never used it.