Configuration User Manual

Rockwell Automation Publication ENET-UM001L-EN-P - March 2014 33
Chapter 4
Configure a Supervisor on a Device-level Ring
Network
A Device-level Ring (DLR) network is a single-fault tolerant ring network
intended for the interconnection of automation devices.
Modules that support the DLR network have an 'R' in the catalog number; for
example, 1756-EN2TR. Check you module specifications to determine whether
the module supports the DLR network.
The ring topology offers these advantages:
• Media redundancy
• Fast network fault detection and reconfiguration
• Resiliency of a single-fault tolerant network
• Easy implementation without any additional hardware requirements
Topic Page
Construct the Physical Network 36
Configure Supervisor Nodes on a DLR Network 37
Complete the Physical Connections of the Network 45
Verify Supervisor Configuration 46
IMPORTANT
This section describes how to configure a ring supervisor on a DLR network.
This section does not fully describe a DLR network itself.
See EtherNet/IP Embedded Switch Technology Application Guide, publication
ENET-AP005, for information on these topics:
• DLR network overview
• Fully configuring a DLR network, that is, configuring all nodes on the DLR
network
• Monitoring a DLR network
• Troubleshooting a DLR network