Siemens SIMATIC ET 200S - Wiring terminal modules

Fail-Safe Modules
7.6 EM 4 F-DI/3 F-DO DC24V PROFIsafe digital electronic module
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
141
7.6.3 Wiring of EM 4 F-DI/3 F-DO DC24V PROFIsafe
Block Diagram
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Figure 7-36 Block Diagram of the EM 4F-DI/3 F-DO DC24V PROFIsafe