S7-1200 Password Unlock

: Go to the Online & Diagnostics view for the CPU. Under the Functions folder, select Reset to factory settings .

If you’re locked out of an S7-1200 that you legitimately own or manage, I can outline authorized recovery options : S7-1200 Password Unlock

If you do not have the password and do not need to keep the program currently on the PLC, you can perform a factory reset to clear all protection levels and start fresh. : Go to the Online & Diagnostics view for the CPU

: Be wary of third-party "unlocker" software found online. These are often scams or malware and can corrupt your PLC firmware. Always stick to official Siemens documentation for reset procedures. Do you have a SIMATIC Memory Card : Be wary of third-party "unlocker" software found online

If you have a network connection to the PLC but don't know the password, you can perform a factory reset. This is the standard method if you just need to reuse the hardware.

Legitimate, safe, and program-preserving. But slow (days to weeks) and requires proper documentation.