Siemens SIMATIC S7 Functional Safety Manual page 148

Technical specifications
A.2 Fail-Safe CPU technical specifications
Refer to the SIMATIC, Industrial Software, SIMATIC Safety - Configuring and Programming,
Programming and Operating Manual
(http://support.automation.siemens.com/WW/view/en/54110126/0/en), Section 10.4:
"Function test of safety program and protection through program identification" for
instructions on transferring programs.
Loading an incorrect user program into a fail-safe CPU results in incorrect execution and
total or partial loss of the safety function.
Loss of the safety function can result in unexpected machine or process operation, which
can cause death, severe personal injury, and/or property damage.
Follow the instructions as provided in the
Configuring and Programming, Programming and Operating Manual
safety programs and controlling how you load programs into a fail-safe CPU.
148
WARNING
SIMATIC, IndustrialSoftware, SIMATIC Safety -
Manual, 02/2015, A5E03470344-AA
for properly identifying
S7-1200 Functional Safety Manual