CS1W-EIP21S / CJ1W-EIP21S EtherNet/IP Unit Manual

This document describes Omron's advanced EtherNet/IP units (models CS1W-EIP21S and CJ1W-EIP21S) that enhance network security for existing CS/CJ CPU machines by replacing or adding the unit. It details security functions such as Secure Communications encryption, User Authentication, Port Opening/Closing, and IP Packet Filtering to protect against unauthorized access, along with ordering information and applicable CPU units.