(I)GW11XX Modbus User Manual
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Step 7
9.2 RTU Slave Mode
Background brief
When the user needs to implement the Modbus TCP master device to communicate
with the Modbus RTU slave device, use the Modbus gateway device and set the
device's operating mode to RTU Slave.
In RTU Slave Mode, the TCP master device accesses the RTU slave device through
the gateway.
