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How to remove KNOW_HOW_PROTECTED in FC and FB

Created by: swilly at: 6/1/2009 9:56 PM (2 Replies)

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6/1/2009 9:56 PM	Rate (0)
swilly Posts: 52 Rating: (4)	Hi. I have a S7-315 PLC machine that came with some FC kow how protected. Can I remove this protection? I don't have the source program, just only I have downloaded the program from the machine, and I have comments. Thanks.
swilly Posts: 52 Rating: (4)
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6/2/2009 6:18 AM	Rate (2)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	Hello, Block protection (Know_How_Protect) can be assigned for self-created STEP 7 blocks. You can find more information about this under "Block protection (Know_How_Protect) for DBs, FBs and FCs" - entry ID: 10025431. Hope this will helps. Best regards Hristo Mihalev

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6/2/2009 8:54 PM	Rate (2)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	Hello, many times was here somebody asking for removing the KHP. Do you think it's good to distribute the instructions how to do it? Especialy on Siemens Support Forum? I wrote this many times here: why there is the KHP when everybody knows how to remove it? And would you write to any another developer web site how to crack his SW? Think about please Regards Sydney

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This contribution was helpful to 1 thankful Users candyengineer

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