Industrial Communication Guide

Ethernet/IP

CC-Link IE

EtherCAT

Topology

star and tree topologies are possible.

Line, ring and star topologies as well as a combination of line (bus) and star.

Star, tree, ring and line (drop line) topologies are possible, as well as combinations of these.

Distinctive features

master/slave principle. master is a software solution only based on standard Ethernet hard- ware, proprietary hardware is used in the slave. use of full duplex capability of Ethernet in that the master sends an Ethernet message which is then read, altered or extended and then forwar- ded by the components. The last component sends the Ethernet message back to the master. Use of the EtherCAT infras- tructure for standard Ethernet.

uses the Common Industrial Protocol (CIP).

Standard Ethernet network com- ponents (switches), devices with proprietary hardware. Communication is based on the master/slave principle.using the token-passing method). Only the component holding the token at any given time may send information.

Systemdeveloper/ organization

Rockwell / ODVA

Mitsubishi Electric, CLPA

Beckhoff, ETG

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