Siemens SIMATIC S7 - Creating F-Blocks in F-FBD;F-LAD; Know-How Protection for F-Fbs and F-Fcs Written by the User

1.2.8 Creating F-Blocks in F-FBD/F-LAD
"Check Block Consistency" Function
The "Check block consistency" function can be found in SIMATIC Manager in the
"Edit" menu, if you have selected a block container.
The "Check block consistency" function rectifies many of the time stamp conflicts
and block inconsistencies. You can use this function in your safety program for
F-FBs, F-FCs, and F-DBs. The procedure is the same as for a standard system
The "Check block consistency" function is not sufficient for obtaining a consistent
safety program. Rather, you must compile the safety program (see manual, Section
5.8.3).
1.2.9 Know-how Protection for F-FBs and F-FCs Written by the User
Know-how Protection
A block with know-how protection is a protected block that cannot be edited.
As of S7 Distributed Safety, V 5.2 + SP 1, you can assign know-how protection to
F-FBs and F-FCs you yourself have created.
The protected F-FBs/F-FCs can no longer be modified.
You can only view the block properties and the tag declaration section of protected
F-FBs/F-FCs; the statement section remains hidden.
The tag declaration table of the F-FBs/F-FCs display the same tag declaration
types as the standard blocks with know-how protection.
Using Know-how Protection
Use know-how protection when you want to protect the knowledge contained in an
F-FB/F-FC and want to prevent unwanted manipulation of the F-FBs and F-FCs.
Product Information for the S7 Distributed Safety, Configuring and Programming Manual
40 A5E00169432-02