The RM modules connect a wide variety of electrical, electronic, and mechanical devices and sensors - such as pumps, temperature and pressure transmitters, motors and more - to computers and applications over standard Ethernet networks (Modbus TCP) or RS485 (Modbus RTU) or even to other controllers and PLCs.
Each remote I/O module has its own Ethernet Modbus TCP/IP port making it easy to connect the modules to each other with up to 100 meters of CAT5 cable, or even longer distances using fiber optic switches. There are several types of Ethernet remote I/O modules available with different I/O format.
See attached spec. sheet.