Technical Report: S7-200 SMART PLC Password Management and Recovery Unlocking a Siemens S7-200 SMART PLC
If you have forgotten the password for your own S7-200 SMART PLC, here are the proper channels: s7-200 smart plc password unlock
When prompted for the password to authorize the deletion, type Technical Report: S7-200 SMART PLC Password Management and
If you only need the PLC operational (not the existing program), you can perform a factory reset: s7-200 smart plc password unlock
The Locked PLC