Figure 4-14 Pn/Io With System Redundancy - Siemens SIMATIC PCS 7 CPU 410-5H System Manual

The figure below shows the system-redundant connection of nine IO devices using three
switches. This configuration, for example, allows you to arrange IO devices in several
cabinets.
Figure 4-14
Note
Logical structure and topology
The topology itself does not determine if IO devices are connected one-sided or in a
configuration with system redundancy. This is determined in the course of configuration. You
can configure the IO devices in the first figure, for example, as one-sided instead of the
system-redundant setup.
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
4.6 System and media redundancy at the PROFINET IO interface
PN/IO with system redundancy
I/O configuration variants
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