Fail-Safe Modules 
  7.7 4 F-DO DC24V/2A PROFIsafe digital electronic module 
ET 200S Distributed I/O System - Fail-Safe Modules 
Installation and Operating Manual, 08/2008, A5E00103686-07 
167 
7.7.3  Wiring diagram of the EM 4 F-DO DC24V/2A PROFIsafe 
Block Diagram 
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3
3
0
9
9
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3VZLWFK
5HDGEDFN
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VZLWFKHV
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RXWSXW
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3URFHVVLQJORJLF
 
Figure 7-50  Block diagram of the EM 4 F-DO DC24V/2A PROFIsafe