User Documentation

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8.2 Serial Master (RTU) with serial Slaves (RTU) and Ethernet
Slaves (TCP)
Application:
One serial Master (Modbus RTU/ASCII) and several Modbus RTU Slaves are connected to the serial
port of the Modbus Gateway.
Ethernet-based Modbus devices (Modbus TCP)  running as slaves - are connected to the Ethernet
network.
If running operation mode RTU Master only one Modbus RTU Master is allowed.