Omron CJ1W-ETN21 Automation and Safety Programmable Logic Controller CJ1WETN21

Description:

The Omron CJ1W-ETN21 Ethernet communication module is used in industrial automation control systems to provide high-speed network connectivity between PLCs, computers, and other industrial devices over Ethernet networks. Commonly installed in Omron CJ-series PLC racks, manufacturing lines, and distributed control systems where reliable data exchange and remote communication are required. Maintenance teams and system integrators use this module for network integration, system upgrades, remote monitoring, and replacement of existing communication modules.

Applications:

The Omron CJ1W-ETN21 is commonly used in manufacturing systems, process control applications, machine automation, and plant-wide networks where PLCs must communicate with SCADA systems, HMIS, and enterprise networks. It supports data exchange, remote diagnostics, and integration of control systems into Ethernet-based industrial networks.

Technical Specifications:

• Manufacturer Part Number (MPN): CJ1W-ETN21
• Product Type: Ethernet Communication Module
• Series: Omron CJ-Series
• Network Type: Ethernet (100Base-TX)
• Communication Protocols: TCP/IP, UDP/IP, FINS
• Built-in Functions: FTP server, email communication, SNTP time sync
• Data Exchange: PLC-to-PC and PLC-to-PLC communication
• Mounting Type: Rack-mounted (CJ-series PLC system)
• Compatibility: Omron CJ1 / CJ2 PLC systems
• Programming Software: CX-Programmer, CX-Integrator
• Application Environment: Industrial control panels and networked automation systems

Common Replacements:

• Omron CJ1W-EIP21 Ethernet/IP Module
• Omron CJ1W-ETN11 Ethernet Module
• Omron CS1W-ETN21 Ethernet Unit