Rockwell Automation Publication 1756-UM004D-EN-P - August 2022 7
Chapter 1
ControlLogix EtherNet/IP Network Device
Overview
Overview EtherNet/IP™ networks are communication networks that offer a
comprehensive suite of messages and services for many automation
applications.
This open network standard uses commonly available Ethernet
communication products to support real-time I/O messaging, information
exchange, and general messaging.
Topic Page
Overview 7
ControlLogix Network Device Features 8
EtherNet/IP Network Specifications 9
1756-EN4TR Device Properties Information 12
Simple Network Management Protocol 12
Electronic Keying 13
Protected Mode 14
Protected Mode in a Redundant Adapter Pair 15
Secure Digital Card 17
CIP Security 19
Parallel Redundancy Protocol 20
Device Level Ring (DLR) 21
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