Configuration Of F-Systems; S7 Distributed Safety Fail-Safe System - Siemens SIMATIC S7 System Manual

Configurations and Help with Selection

2.2 Configuration of F-Systems

2.2 Configuration of F-Systems
2.2
Basic Configurations
This chapter describes the three basic configurations for F-systems:

• S7 Distributed Safety fail-safe system

• S7 F Systems fail-safe system
• S7 FH Systems fail-safe and fault-tolerant system
2.2.1 S7 Distributed Safety Fail-safe System
Components of S7 Distributed Safety System
S7 Distributed Safety refers to a fail-safe automation system consisting of at least the
following components:
• A central processing unit with fail-safe capability, such as CPU 315F-2 DP, on which a
• Fail-safe I/O, for example:
2-2
safety program is executed
– Fail-safe signal modules (F-SMs) in a centralized configuration with CPU 315F-2 DP
– Fail-safe signal modules (F-SMs) in an ET 200M distributed I/O system
– Fail-safe modules in an ET 200S distributed I/O system
– Fail-safe modules in an ET 200pro distributed I/O device
– ET 200eco fail-safe I/O module
– Fail-safe DP standard slaves/standard I/O devices
Warning
You can use the following F-CPUs in S7 Distributed Safety: IM 151-7 F-CPU, CPU 315F-
2 DP, CPU 315F-2 PN/DP, CPU 317F-2 DP, CPU 317F-2 PN/DP and CPU 416F-2. Note
that these F-CPUs cannot be used in S7 F/FH Systems.
You can use the following F-CPUs in S7 F/FH Systems: CPU 414-4H and CPU 417-4H.
Note that these F-CPUs can not be used in S7 Distributed Safety.
Safety Engineering in SIMATIC S7
System Manual, 04/2006, A5E00109529-05