If you have lost access to a Siemens PLC, consider these authorized methods before using third-party software: Reset to Factory Settings : For S7-1200/1500, you can reset the password through the TIA Portal CPU properties , though this may delete the existing program.
Before using third-party "password finders," consider the following: password-find-plc siemens s7-keys7-v314-
Siemens S7 controllers utilize a hierarchical protection concept to prevent unauthorized modification or theft of the control logic. When a user sets a password on an S7-300 or S7-400 CPU, they are defining access rights across four levels. If you have lost access to a Siemens