ABB AC 800M, User Manual

Page: 64 / 118

Ring Topology Section 3 Fieldbus Topologies
64 3BDS009029R5001 B
Ring Topology
The ring structure represents a special form of the line topology. A high degree of
network operating safety is achieved by ”closing“ the line. A redundant ring can be
also realized to increase the high availability. This structure is commonly used in
connection with fibre optics and optical link modules.
Figure 19.
Redundant ring topology
This topology is also described in Basics of fibre optics topology technologies on
page 46.