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Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual User Manual

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Rockwell Automation Publication 1756-UM535D-EN-P - November 2012

91

Configure the EtherNet/IP Network

Chapter 4

Complete these steps to construct and configure the example DLR network.

1. Install and connect devices on the DLR network but leave at least one

connection open.

This graphic shows the DLR network with one connection left open.

Figure 25 - DLR Topology with One Connection Unmade

IMPORTANT

When you initially install and connect devices on the DLR network,
leave at least one connection open, that is, temporarily omit the

physical connection between two nodes on the DLR network.

You must configure an active supervisor node for the network before
network operation begins when the final connection is made.

If you fully connect your DLR network without a supervisor configured,
a network storm can result, rendering the network unusable until one
link is disconnected and at least one supervisor is enabled.

Stratix 8000 Switches

Redundant Chassis Pair

HMI Connected via

1783-ETAP Taps

Remote ControlLogix Chassis with Redundant Power

Supplies and I/O Modules

1715 Redundant I/O System

Cisco Switch

FactoryTalk Application

Physical

connection is not

made yet.