R-ETM100 is a Ethernet module with Modbus protocol over TCP.

It controls 100 Mbps communication with the operator terminal on one side and powers and controls the modules installed on the R-BUS(x) backplane on the other, acquiring data from all the I/Os.

It can control a maximum of 16 I/O modules.

The communication port has an RJ45 connector and two signal LEDs (link and data).

R-ETM100 is powered at 24 VDC via an extractable connector.


  • Complete control of R-BUS(x) backplane
  • Ethernet interface, Modbus protocol over TCP
  • Power supply of backplane
  • In conformity with UL508
Developed & Designed By:
Eng. Haitham Abdelraouf @2021