S7-200 Smart Password Unlock Direct

What number are you working with (e.g., CPU ST20, SR20)? What firmware version is the PLC running?

If you are connected via Ethernet or PPI, you can clear the password directly from the software, provided you do not need the code currently residing inside the controller. Open . s7-200 smart password unlock

Power up the PLC. The LED will flash, indicating processing. What number are you working with (e

If none of the above methods work, you can contact Siemens support directly: s7-200 smart password unlock

Power on the PLC and wait for the status LEDs (typically the RUN/STOP LED) to finish flashing (usually about 10 seconds).

A factory reset wipes the entire program and all data blocks from the CPU memory.