Safety Engineering in SIMATIC S7
System Manual, 04/2006, A5E00109529-05
4-1
Safety in F-Systems
4
4.1
4.1
Introduction
Overview
The safety mechanisms in S7 Distributed Safety and S7 F/FH Systems F-systems are
essentially the same. Safety mechanisms visible to the user are presented in this chapter,
including:
•
Safety mode
•
Fault reactions
•
Restart of F-system
•
Password protection for F-systems
Differences between S7 Distributed Safety and S7 F/FH Systems are individually noted.
An overview of the standards, approvals, and safety requirements met by S7 Distributed
Safety and S7 F/FH Systems is presented in "Standards and Approvals."
Additional Information
The configuring and programming manuals for S7 Distributed Safety and S7 F/FH systems
present information on working with the safety mechanisms and provide more detailed
information, where applicable.
Standard behavior is described in the
STEP 7 manuals and hardware manuals and is not
covered in this manual.
