- For the S7-1200, removing the memory card and performing a factory reset can clear the project password, but this will also erase all user programs and data.
Here is the cold, hard truth: . Siemens built these with high security to protect proprietary code. To "unlock" the PLC, you must wipe it clean and start over. The "Golden Ticket" Solution: The Empty Transfer Card s71200 password unlock work
Power the CPU back on. It is now factory reset and unprotected. - For the S7-1200, removing the memory card
Unlocking a password-protected Siemens S7-1200 PLC typically means choosing between to gain access for a new project or recovering the original program , which is significantly more difficult. Because Siemens design prioritizes security, there is no "backdoor" to view a protected program without the original password. To "unlock" the PLC, you must wipe it clean and start over