The gateway is configured based on which side is Modbus master. If your Modbus TCP master wants to get
data from Modbus RTU slaves, then configure the gateway with Modbus TCP as master. If your Modbus
RTU master wants to get data from Modbus TCP slaves, then configure the gateway with Modbus RTU as
master.
Regardless of which side is master, one setting that is always required is setting the IP address of the
gateway itself. This was already mentioned in the previous section, but for purposes of reiterating the
steps required to configure the gateway, set the IP address from the Network page as shown here.
3.1 Configuring Gateway with Modbus TCP as Master
If Modbus TCP is master, then from the perspective of your slave RTU devices, the RTU port on this
gateway must also be master. Select master simply by clicking the "Iam the RTU Master" button.
3. Configuring Gateway as a Modbus RTU Master
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