OMRON CJ1W-EIP21 EtherNet/IP Unit Operation Manual for NJ-series CPU Unit

About this manual

This manual provides step-by-step instructions for installing, wiring, configuring, and communicating with the CJ1W-EIP21 EtherNet/IP Unit when used with NJ-series CPU Units. It is intended for engineers and technicians familiar with electrical systems and IEC 61131-3 or JIS B3503 programming standards. The manual includes sections on network setup, IP address configuration, device variable assignment, and troubleshooting.

The document assumes the user has a CJ1W-EIP21 Unit version 2.1 or later and an NJ-series CPU Unit version 1.01 or later, with Sysmac Studio version 1.02 or higher. It also references related manuals for motion control, EtherCAT, and error management.

What's inside

• Introduction
• Manual Structure
• Sections in this Manual
• Installing Ethernet Networks
• Assigning Device Variables for CJ-series Units
• Determining IP Addresses
• EtherNet/IP Communications Procedures
• Troubleshooting
• Appendices
• Index

Specifications

Frequently asked questions

What is the minimum version of the NJ-series CPU Unit required?

The NJ-series CPU Unit must be version 1.01 or later.

What Sysmac Studio version is required?

Sysmac Studio version 1.02 or higher is required.

What is the model number of the EtherNet/IP Unit?

The model number is CJ1W-EIP21.