Catalog > Omron CJ1W-ETN21 Ethernet Unit

Omron CJ1W-ETN21 Ethernet Unit

The Omron CJ1W-ETN21 is an Ethernet unit designed for PLC control modules, providing 100 Base-TX and 10 Base-T communication capabilities. It allows for seamless integration of PLC systems with Ethernet networks, enabling fast and reliable data transfer for industrial automation applications.

Communication ProtocolEthernet/IP
Data Transfer Rate100 Mbps (100 Base-TX) and 10 Mbps (10 Base-T)
Operating Voltage24VDC
Number of Ports1
CompatibilityOmron CJ1 Series PLCs

Symptoms of Failure:
Common failure symptoms include intermittent network connectivity issues and failure to establish communication with the PLC. To test, check the Ethernet cable connections for any damage or looseness, and ensure the IP settings are correctly configured on both the unit and the network.

A facility may choose to buy a replacement Omron CJ1W-ETN21 Ethernet Unit instead of upgrading to take advantage of its seamless compatibility with existing Omron CJ1 Series PLCs commonly used in manufacturing plants. Maintaining the legacy architecture is cost-effective as it eliminates the need for extensive reprogramming and reconfiguration of the entire control system.