Unlock Siemens S7-1200 / S7-1500 FB Password
Recover a know-how protection password on a Siemens S7-1200 / S7-1500 block so you can view and edit its logic again. Know-how protection is the official Siemens term for this feature: it hides the code inside a block, while the block's title, comments and interface stay visible — the logic itself just won't open without the password. If you'd rather have it handled, I provide manual Siemens recovery support — done personally, with nothing sold or downloaded from this site.
What this walkthrough covers
- Know-how protection on Function Blocks (FB), Functions (FC), Organization Blocks (OB) and Data Blocks (DB)
- S7-1200 and S7-1500 projects built in TIA Portal
- Recovering edit access without disturbing the rest of the project
Supported software & hardware
- Siemens S7-1200 and S7-1500 CPUs (including S7-1500F safety variants)
- TIA Portal / STEP 7 Professional, V13 and later
- Know-how-protected FB, FC, OB and DB blocks
Who this is for
- You forgot or lost the know-how protection password on your own project
- A previous engineer left and no password record was kept
- You've inherited a locked TIA Portal project you legally own
- You need to open or edit a know-how-protected block for maintenance
Locked out of a Siemens project you own?
Send the software and version, and a short description of what you're locked out of. The work is manual and done personally — no tools sold, no downloads.
Email for recovery support More on YouTubeQuestions
Which products and versions does this cover?
It applies to Siemens S7-1200 and S7-1500 CPUs (including S7-1500F safety variants), TIA Portal / STEP 7 Professional, V13 and later, Know-how-protected FB, FC, OB and DB blocks.
Who does the recovery?
I do, personally. Every job is manual — it isn't automated with a tool and it isn't resold to anyone else.
Do I have to own the equipment?
Yes. I only help owners and authorized maintainers regain access to their own projects — in line with the authorized-use-only policy on the channel.
Do you sell a tool or a download for this?
No. There are no tools for sale and no downloads on this site. Recovery is a manual service I perform or guide you through.