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Siemens SIMATIC S7-1200 Güvenlik Programlama Manualline

2 Configuring Fail-Safe Controllers

2.6

Know-how protection

STEP 7 Safety V14 or higher allows you to activate know-how protection for fail-

safe blocks (FCs and FBs).

Know-how protection protects specific program parts against access by

unauthorized persons, regardless of the F-CPU's and the safety program's access

protection. The contents of an FC or FB cannot be viewed or modified without a

password.

Recommendation

During the project phase, determine to what extent it makes sense to protect the

blocks of a safety program against third-party access.

Advantages



Protects your know-how across contents of program parts.



Accepted blocks cannot be modified.

Additional information

The following documentation provides instructions for using know-how protection

for different scenarios:

https://support.industry.siemens.com/cs/ww/en/view/109742314

Safety Programming Guideline

Entry ID: 109750255,

V1.0,

10/2017