Linear network introduction – Rockwell Automation 284E ArmorStart with EtherNet/IP - User Manual User Manual

Page 61

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Rockwell Automation Publication 280E-UM001B-EN-P - July 2012

61

Introduction to EtherNet/IP and Device Level Ring Technology Chapter 3

Linear Network Introduction

A linear network is a collection of devices that are daisy-chained together.

Figure 42 - Linear Network Collection of Devices

In this topology a communication issue in the media or device will prevent nodes
downstream from communicating.

Figure 43 - Communication Issue in the Media or Device Line

The EtherNet/IP embedded switch technology allows this topology to be
implemented at the device level. No additional switches are required.

These are the primary advantages of a linear network:

• The network simplifies installation and reduces wiring and installation

costs.

• The network requires no special software configuration.

• Embedded switch products offer improved CIP Sync application

performance on linear networks.

The primary disadvantage of a linear network is that any break of the cable
disconnects all devices downstream from the break from the rest of the network.

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