Omron CJ1W-EIP21S Fast EtherNet/IP PLC Unit In Stock
EtherNet/IP unit for CJ-series, 100Base-TX, 1 x RJ45 socket, supports CIP, FINS/UDP and FINS/TCP.
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Key Features and Technical Specifications
The Omron CJ1W-EIP21S EtherNet/IP unit is the perfect solution to expand your PLC system’s power. This module makes data sharing between devices quick and effortless.
This powerful expansion unit from Omron simplifies your automation projects. By using its Tag Data Link function, you can share I/O data between controllers without writing a single line of complex communication code. This saves you valuable engineering time and reduces the chance of an error.
| Feature | Detail |
|---|---|
| Product Category | EtherNet/IP Communication Unit |
| Manufacturer | Omron Industrial Automation |
| Compatible PLC Series | CJ-series (CJ1M, CJ1G/H, CJ2M, CJ2H) |
| Communication Port | 100BASE-TX / 10BASE-T (Twisted-pair cable) |
| Max Connections | 64 (for Tag Data Links) |
| Tag Data Link Capacity | 252 words (4,032 bytes) sending, 252 words (4,032 bytes) receiving |
| Supported Protocols | EtherNet/IP (CIP messaging and Tag Data Links) |
| Configuration Software | Network Configurator (included in CX-One) |
| Mounting | Mounts to CPU rack or Expansion rack |
Unlock Seamless Data Exchange with Tag Data Links
The best feature of the CJ1W-EIP21S is its ability to use tag data links. This function changes how your PLCs communicate. Instead of writing complicated ladder logic for sending and receiving data, you just configure the tags you want to share using the Network Configurator software. The unit handles the rest of the communication automatically in the background.
Easy PLC Integration and Product Configuration
The CJ1W-EIP21S is an expansion module that mounts directly onto an Omron CJ-series PLC backplane, just like any other I/O unit. It draws power and communicates with the CJ2M CPU unit or other CJ-series CPUs directly through the rack. This tight integration makes for a clean and efficient design.
Configuration is done using the intuitive Network Configurator tool, which is part of the Omron CX-One Software Suite. This software provides a graphical interface to set the IP address, configure tag data links, and manage all your devices on the Ethernet network. You don’t need to be a network expert to create a powerful communication system.
Access Detailed Unit Status and Diagnostics
The CJ1W-EIP21S gives you easy access to detailed diagnostic information. You can monitor the status of the network, check for any communication error, and see the health of each connection directly from your PLC or HMI.
This unit has built-in status indicators that provide a quick visual check. For a deeper look, you can access special memory areas in the PLC to see detailed status codes and communication cycle times. This helps you find and fix problems fast, minimizing downtime.
Omron CJ1W-EIP21S Product Datasheet
Frequently Asked Questions
The CJ1W-EIP21S is designed for the Omron CJ-series PLC family. This includes the CJ1M, CJ1G, CJ1H, CJ2M, and CJ2H CPU units.
Yes, you need the Omron Network Configurator software. This tool is part of the CX-One automation software suite and makes setting up the network and tag data links very easy.
The ‘S’ model, CJ1W-EIP21S, is the newer version with enhanced features and performance. It is the recommended product for all new applications. For details, please refer to Omron official instructions
Yes. As long as the third-party device supports standard EtherNet/IP with tag-based communication, you can connect it to the CJ1W-EIP21S. This makes it a flexible choice for mixed-vendor systems. For simpler connections, you might also consider an Omron CP1W-CIF01 RS-232C Option Board.
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