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4 > SETTING UP THE MODBUS RTU COMMUNICATION
You can change the Modbus slave address of the Master Station MS102. Available addresses are
included between 1 and 254.
To manage the Modbus RTU communication the Master Station MS102 is equipped with two Modbus
RTU/TCP gateway. There are 2 IP addresses reserved for each unit (by default it is 192.168.94.181
for the gateway 1 and 192.168.94.183 for the gateway 2).
If you want to change the Modbus slave address refer to part 4.2. Setting up the Modbus slave
address with the Touch Screen. If you want to change the IP address refer to part 4.3. Setting up
the Modbus RTU/TCP gateway.
4.1 > DEFAULT PARAMETERS
Default parameters are shown below:
For the gateway:
Transmission speed: 19200 bauds
Format: 8 data bits, 1 stop bit, no parity
Communication protocol: Modbus RTU
Modbus address: 2
As explained above, if you only want to change the Modbus slave address refer to part 4.2. Setting
up the Modbus slave address with the Touch Screen. If you want to change Transmission speed or
format refer to part 4.3. Setting up the Modbus RTU/TCP gateway.
4.2 > SETTING UP THE MODBUS SLAVE ADDRESS WITH TOUCH SCREEN
To change the Modbus address of a unit you must be logged in to the Master Station with the
Maintenance account. To see how to log in refer to part 10.1. Log in access.
1. From the main page touch the MS button
or press F4.
2. Touch the Tool button or press F2.
