
SIMATIC S7-400
Modules for SIMATIC S7-400F/FH
Fail-safe I/O modules
6/158
Siemens ST 70 · 2013
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Overview
• Failsafe input/output modules for use with the
SIMATIC S7-400F/FH
• With integrated safety functions
• Can only be plugged into the ET 200M
• Achievable safety classes in safety operation: SIL 2, SIL 3 to
IEC 61508, AK 4, AK 6 to DIN V 19250, Category 3, 4 to
EN 954-1
• Use in standard mode with high diagnostics requirements
• Also suitable for redundant operation
For more information, see chap. 5, page 5/88.
Kap_06_eng.book Seite 158 Donnerstag, 2. Mai 2013 4:16 16
© Siemens AG 2013
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