Specifications

A Slave with Modbus RTU protocol may simultaneously communicate with masters using Modbus TCP
and Modbus RTU. The network will deliver responses only to the Master which issued the queries using
the appropriate protocol.
The individual settings are described in chapters 1–5.
RS232
ModbusRTU
M
RS232
ModbusRTU
S
S
RS232
ModbusRTU
S
RS485
ModbusRTU
S
ETH
ModbusTCP
LocalTCP
connection
M
ETH
ModbusTCP
LocalTCP connection
S
ETH
ModbusTCP
LocalTCP
connection
M
ETH
ModbusTCP
LocalTCP
connection
S
Fig. 8.7: Modbus TCP, Slave RTU or TCP
RipEX Application notes – © RACOM s.r.o.48
Modbus TCP/RTU