Omron CS1W-ETN21 / CJ1W-ETN21 Ethernet Units Construction of Networks User Manual

About this manual

This operation manual provides detailed guidance for setting up and managing Omron CS1W-ETN21 and CJ1W-ETN21 Ethernet Units. It covers safety precautions, system configuration, unit version handling, and network installation procedures.

The document includes step‑by‑step instructions for using CX‑Programmer to verify unit versions, configuring Ethernet settings via the web browser, and performing communications tests. Contact information for Omron regional offices is listed at the end of the manual.

What's inside

• Intended Audience
• General Precautions
• Safety Precautions
• Operating Environment Precautions
• Features and System Configuration
• Ethernet Unit Function Guide
• Unit Version Upgrade Information
• Installation and Initial Setup
• Network Installation
• CX‑Programmer Unit Setup

Specifications

Frequently asked questions

How can I confirm the unit version of an Ethernet Unit?

Use CX‑Programmer version 4.0 and open the Unit Manufacturing Information dialog to view the Unit Version Number.

What label is provided to differentiate Ethernet Units with different unit versions?

A unit‑version label is supplied that can be attached to the front of the Ethernet Unit.