Siemens SIMATIC ET 200SP System Manual page 19

Use in safety mode only
Safety mode is the F-I/O operating mode that allows safety-related communication using
safety frames.
You can only use the ET 200SP fail-safe I/O modules in safety mode. They cannot be used
in non-fail-safe mode.
Achievable safety classes
The fail-safe modules are equipped with integrated safety functions for safety mode.
You can achieve the safety classes of the table below:
● With the appropriate parameter assignment of the safety functions in STEP 7,
● With a specific combination of fail-safe and non-fail-safe I/O modules as well as
● With a special arrangement and wiring of the sensors and actuators
Table 2- 1
Additional information
The applications and wiring for the particular safety class are described in the manuals of the
fail-safe I/O modules.
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF
2.3 How are SIMATIC Safety F-systems structured with ET 200SP?
Safety classes that can be achieved with ET 200SP in safety mode
According to IEC 61508
SIL2
SIL3
SIL3
Safety class in safety mode
According to ISO 13849-1:2006
Category 3
Category 3
Category 4
System overview
(PL) Performance Level d
(PL) Performance Level e
(PL) Performance Level e
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