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1. PRODUCT OVERVIEW
6/2022
Emerson.com/SolaHD
User Guide
A272-365
1.5.1.3 WIRING: SCM-E-EIP AND SDN-D DEVICE LEVEL RING (DLR) CONNECTION
A Device Level Ring (DLR) network is a single fault tolerant network intended for the interconnection
of automation devices without the need for additional switches.
The setup below shows the typical network connections for two SCM-E-EIP modules connected in
a DLR topology. In this example, each SCM-E-EIP is connected to a single SDN-D Power Supply. This
setup also makes use of a ring supervisor, a device that verifies the integrity of the ring, reconfigures
the ring to recover from a single fault, and collects diagnostic information for the ring.