to reset know-how-protect of a SIEMENS S7-Function Block just follow this little recipe:

1) Otwóż plik z katalogu projektu S7 w ścieżce \ombstx\offline\00000001\SUBBLK.DBF
Open the following file in your S7 project's main folder with a hex editor (yon can get many good and free hex editor tools by using google, for example with *HEX-Wizard* or *Winhex*):nameofyourproject\ombstx\offline\00000001\SUBBLK.DBF

2) Wyszukaj wartości ASCII "1400100" gdzie (140=FB, 120=FC, 080=OB 0100=Number blocku) jeżeli szukasz FB100
With your hex-editor search for ASCII-String, e.g. "1400100" for function block number FB100 (140=FB, 120=FC, 080=OB 0100= Number of function block). That means, search for ascii-string "1400059" if you would like to unprotect the funtion FB59


3) Dodaj do adresu 84 (54 hex) i przejdź do tego znaku, w tabeli HEX powinna być wartość 33 (0 ASCII)
To the found address you just add 84 decimal (or 54hex) and go to the line of this calculated new adress and look for a hex-number "33" in this line. (there must be a 33, if everything went right until here)

4) Zmień wartość 33 na 30 (0 na 3 ASCII)
Simple replace this "33" by "30"

5) Zapisz plik i gotowe
Save your file an re-open step 7.

6) The know-how-protect should be reset.

I've successfully used this described process above, but sometimes had to close and re-open step7 more than one or two times - for whatever reason! There are also some tools (e.g. "s7canopener") on the internet which may also unprotect protected functions in a more easy OR more comfortable way, but I never really get them running.

If you have any further questions- you know: this is a good place to ask them!
Good luck
and greetings from Germany,

Marco
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Posted by rdwg08 on 29 June, 2009 - 11:00 am
Thanks alot Marco i will give this a try.
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Posted by RUTRA on 5 August, 2009 - 4:15 pm
Hello Marco!

I would like to know, if it procedure can also be used unlook ST blook creation in Simotion Scout by Siemens.

Thank very much for you attention.
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Posted by fsdfs on 24 October, 2009 - 8:33 am
> to reset know-how-protect of a SIEMENS S7-Function Block just follow this little recipe: <

--- snip ---

Thx Works but i don't know how to do in a multi project, i don't find any 0000000001 directory
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