S7 F Systems Fail-Safe System - Siemens SIMATIC S7 System Manual
Safety engineering
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Example 3 for PROFINET IO:The S7-300 station with CPU 315F-2 PN/DP is the I/O
controller The F-CPU exchanges safety-relevant data with the fail-safe modules of
ET 200pro, ET 200S and fail-safe I/O standard devices.
The fail-safe system can be expanded by any number of "standard" I/O devices.
Figure 2-3
2.2.2
S7 F Systems Fail-safe System
Components of S7 F Systems
S7 F Systems 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 417-4 H with an F-runtime
• Fail-safe I/O, for example:
Safety Engineering in SIMATIC S7
System Manual, 04/2006, A5E00109529-05
Example 3: F-System S7 Distributed Safety with PROFINET IO
license, on which a safety program is executed
– Fail-safe signal modules (F-SMs) in an ET 200M distributed I/O system (with optional
redundancy)
– Fail-safe modules in an ET 200S distributed I/O system
– ET 200eco fail-safe I/O module
– Fail-safe DP standard slaves
Configurations and Help with Selection
2.2 Configuration of F-Systems
PROFINET IO
2-5
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