For design of a fail-safe automation system for plants with increased
safety requirements. F-CPUs comply with safety requirements up to SIL 3 to
IEC 61508 and up to Cat. 4 according to EN 954-1.
Fail-safe I/O modules of the ET 200M range can also be centrally connected,
standard modules for non-safety-relevant applications can be used centrally
as well as distributed.