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Entry type: FAQ Entry ID: 73122648, Entry date: 05/22/2013
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What block protection facilities are available in STEP 7 to protect the know-how of your blocks?

  • Entry
  • Associated product(s)
STEP 7 V5.x and STEP 7 (TIA Portal) provide various block protection facilities to protect the know-how of your programs in the blocks against unauthorized persons.

Description
You can also encrypt programs created in S7-SCL, S7-GRAPH and CFC and protect the block code against unauthorized access. The program code, the temporary/static variables and the network comments are then not displayed. It is not possible to change the protected block. The following table gives you an overview of the know-how protection facilities.

 Language ProductBlock protection installation Password 
LAD/STL/FBDSTEP 7 V5.xInput: "KNOW_HOW_PROTECT" in the STL source
Further information is available in Entry ID: 10025431.
No
S7-SCLSTEP 7 V5.xInput: "KNOW_HOW_PROTECT" in the S7-SCL source
Further information is available in Entry ID: 14761527.
No
S7-GRAPHSTEP 7 V5.xInput: "KNOW_HOW_PROTECT" in the S7-GRAPH source
Further information is available in Entry ID: 10024793.
No
CFCSTEP 7 V5.xEnable the "KNOW_HOW_PROTECT" function
in the CFC chart and SCL source
Further information is available in Entry ID: 14761890.
No
LAD/FBD/STL/SCLSTEP 7 V5.5 and higherVia the function: S7-Block Privacy
Further information is also available in Entry ID: 45632073.
Yes

(S7-300/400)
LAD/FBD/STL/SCL/GRAPH


(S7-1200)
LAD/FBD/SCL


(S7-1500)
LAD/FBD/STL/SCL/GRAPH

STEP 7 (TIA Portal) V15Enable the block protection with the "Edit > Know-How Protection" function

Further information is available in the STEP 7 (TIA Portal) Online Help under: Install and remove write-protection for blocks

Yes