CJ1W-ETN21

The Omron CJ1W-ETN21 module is an Ethernet communication unit designed for seamless integration within CJ series PLCs, where it is used for networking applications. The CJ1W-ETN21 unit supports 100Base-TX Ethernet connectivity for delivering high-speed data transfer capabilities. It belongs to the Omron CJ series CPU Bus unit product line and can be conveniently mounted in both CPU racks and Expansion racks. Up to 4 units can be mounted in a PLC system. The CJ1W-ETN21 Ethernet communication module uses the CSMA/CD media access method and employs a baseband modulation method. It operates within a star-form transmission path system with a standard baud rate of 100 Mbit/s (100Base-TX). Transmission is facilitated through various media, including unshielded twisted-pair (UTP) cables (Categories: 5, 5e) and shielded twisted-pair (STP) cables (Categories: 100 ohms at 5, 5e). The CJ1W-ETN21 Ethernet unit is capable of transmitting data over distances of up to 100 meters between the hub and the node. The CJ1W-ETN21 Ethernet unit can also be configured to operate as a 10Base-T unit with a baud rate of 10 Mbit/s. When integrated into a PLC system, the CJ1W-ETN21 Ethernet unit operates with a maximum current consumption rating of 370 mA at 5 V DC. It maintains a lightweight profile with a maximum weight of 100 g. The CJ1W-ETN21 Ethernet unit's compact dimensions are 31 mm in width, 90 mm in height, and 65 mm in depth, and its compact dimensions make it easy to install. As part of the Omron SYSMAC CJ series, the CJ1W-ETN21 Ethernet unit meets the same general specifications as other Omron SYSMC CJ series modules.