I/O configuration variants
4.3 Fault-tolerant automation systems (redundancy operation)
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
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With error/fault
The following figure shows how a component may fail without impairing the functionality of
the overall system.
Figure 4-7
Example of redundancy in a 1-out-of-2 system with error
Failure of a redundancy node (total failure)
The following figure shows that the overall system is no longer operable, because both
subunits have failed in a 1-out-of-2 redundancy node (total failure).
Figure 4-8
Example of redundancy in a 1-out-of-2 system with total failure
