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Siemens SIMATIC S7 F User Manual

Siemens SIMATIC S7 F
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Fail-Safe Blocks
Fail-Safe Systems
8-8 A5E00085588-03
8.1.5 Installation in Cyclic Interrupt OBs
!
Safety Note – Safety Program can be installed in OB 3x ONLY
Fail-safe blocks can only be installed in a cyclic interrupt OB 3x. Installation in the
OB 1 is not permissible.
The cycle time of the cyclic interrupt OB is assigned parameters in HWCONFIG
(CPU parameters "Cyclic Interrupts, Execution". See "Monitoring the F Cycle
Time").

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Siemens SIMATIC S7 F Specifications

General IconGeneral
CategoryController
Safety Integrity LevelSIL 3
Protection ClassIP20
SeriesS7
Safety StandardIEC 61508
MemoryVaries depending on CPU type
Digital InputsVaries depending on CPU type and I/O modules
Digital OutputsVaries depending on CPU type and I/O modules
Analog InputsVaries depending on CPU type and I/O modules
Analog OutputsVaries depending on CPU type and I/O modules
CommunicationPROFIBUS, PROFINET
Operating Temperature0°C to 60°C

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