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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4.3.2
Increase of plant availability, reaction to errors
The CPU 410 satisfies the high demands on availability, intelligence, and decentralization
placed on modern automation systems. It also provides all functions required for the
acquisition and preparation of process data, including functions for the open-loop control,
closed-loop control, and monitoring of assemblies and plants.
System-wide integration
The CPU 410 and all other SIMATIC components, such as the SIMATIC PCS 7 control
system, are matched to one another. The system-wide integration, ranging from the control
room to the sensors and actuators, is implemented as a matter of course and ensures
maximum system performance.
Figure 4-5
Integrated automation solutions with SIMATIC
Graduated availability by duplicating components
The redundant structure of the S7-400H ensures requirements to reliability at all times. This
means: all essential components are duplicated.
This redundant structure includes the CPU, the power supply, and the hardware for linking
the two CPUs.
You yourself decide on any other components you want to duplicate to increase availability
depending on the specific process you are automating.