Siemens CIM - Modbus RTU

Web-based configuration
5.4 Web pages
CIM
70 Operating Manual, 11/2022, A5E51250518-AC
5.4.7.4 Modbus RTU
This page allows you enable, disable and set the Modbus RTU connection.
CIM supports only one Modbus RTU connection, either as Modbus RTU master or Modbus RTU
slave.
①
Enable or disable the Modbus RTU connection
Note: Modbus RTU connection is not secure.
②
Here you configure the properties of the connections of serial port.
• Mode: RS485, RS422 or RS232
• Baud-rate: set the transfer speed
• Transmission: serial port setup
• Terminal Resistor: enable or disable the embedded terminal resistor
③
Link to Modbus address space information page
④
Here you configure the Modbus RTU Type
• If you select "Master", you need to set the "Data transfer table".
• If you select "Slave", you need to set the "Modbus RTU Slave ID".
Range for the "Modbus RTU Slave ID": 1 to 255.