CJ1W-EIP21S Omron EtherNet/IP Communication Unit

The Omron CJ1W-EIP21S is a compact EtherNet/IP communication unit for CJ-series PLCs, enabling fast, deterministic data exchange over Ethernet-based networks. With a single RJ45 port (100Base-TX) and support for standard industrial protocols such as CIP, FINS/UDP, and FINS/TCP, it is ideal for connecting Omron PLCs to SCADA systems, HMIs, vision devices, and remote I/O.

Designed as a CPU bus unit, it integrates easily into any CJ-series rack system and offers simplified setup through CX-Integrator and Sysmac Studio.

Technical Specifications

Model: CJ1W-EIP21S
Series: CJ1W
Product Type: Ethernet Communication Unit
Mounting Type: DIN rail via CJ-series rack
Dimensions (W × H × D): Refer to datasheet
Weight (Unpacked): 250 g
Degree of Protection: IP20
Unit Type: CPU Bus Unit

Communication Interfaces

• Number of Ethernet Ports: 1 × RJ45 (100Base-TX)
• Communication Protocols Supported:
  • EtherNet/IP (CIP)
  • FINS/UDP
  • FINS/TCP
• Network Interface: IEEE 802.3 compliant
• Transmission Speed: 100 Mbps
• PLC Bus Interface: CJ-series I/O bus (CPU Bus Unit slot)

Functional Capabilities

• Tag Data Link: Supports cyclic communication using CIP protocol
• Explicit Messaging: Allows command-based communication with external devices
• Routing Capability: Access to other networked Omron PLCs
• Setup Utility: Configured via Omron CX-Integrator or Sysmac Studio
• Diagnostics: Real-time network status monitoring and error detection

Mechanical & Installation

• Installation Method: Mounted into CJ-series rack (CPU Bus slot)
• Cooling Method: Natural convection
• Power Supply: Drawn from backplane (no external power required)

Environmental Conditions

• Operating Temperature: 0 to 55°C
• Storage Temperature: –25 to +70°C
• Relative Humidity: 10% to 90% RH (non-condensing)
• Altitude: Up to 2000 m
• Vibration Resistance: Conforms to IEC 60068-2-6
• Shock Resistance: Conforms to IEC 60068-2-27

Applications

Perfect for:

• Connecting CJ-series PLCs to EtherNet/IP-based I/O and controllers
• Integrating Omron PLCs into SCADA or MES systems
• Distributed control systems requiring deterministic Ethernet communication
• Multi-protocol systems needing FINS/UDP or FINS/TCP support
• High-speed data sharing across plant-level Ethernet networks

Key Features & Benefits

✅ Built-In EtherNet/IP: Standardized communication over 100Base-TX.

✅ Multi-Protocol Support: CIP, FINS/UDP, and FINS/TCP in one module.

✅ Simple Integration: CPU bus slot installation for fast commissioning.

✅ High-Speed Networking: 100 Mbps operation with deterministic timing.

✅ Industrial Compatibility: Built to withstand industrial operating conditions.

📦 Available from Drive Outlet Megastore

The Omron CJ1W-EIP21S delivers robust and flexible Ethernet communication for CJ-series PLC systems, helping bridge automation layers from shop floor to control room.

Need help configuring EtherNet/IP networks or connecting to Omron PLCs? Our network specialists are ready to help.

Industrial Ethernet. Simplified integration. Drive Outlet keeps you connected.