The Modbus Serial Slave mode is used to connect one or more serial ports with the Internal Registers.
The external devices connected to the serial ports are modbus masters and the IP100 acts as a modbus slave.
A connection between a master serial port and Internal Registers is configured using a row in the form. Access to the Internal Registers is enabled using the check box.
The configuration parameters are:
COM Port | Serial port number in the range 0 to 4. |
RTU ID | Modbus address. |
The example in this figure shows two serial masters accessing Internal Registers. The RTU ID on the form is set to 1 and enabled using the check box.