Siemens CPU 410-5H Process Automation - Page 241

Supplementary information
16.9 Communication via S7 connections
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
241
Figure 16-9 Example of linking standard and fault-tolerant systems in a redundant bus system
If the plant bus is configured as a duplex fiber-optic ring, the communication of the systems
involved is maintained if a break of the two-fiber fiber-optic cable occurs. The systems then
communicate as if they were connected to a bus system (linear structure); see following
figure.
Figure 16-10 Example of linking of standard and fault-tolerant systems in a redundant ring