S7-200 Unlock Tool ^hot^ -

A more recent addition that explicitly blocks program uploads even with software tools. Official Recovery & Reset Methods

If you are uncomfortable with hacking tools, consider these alternatives. s7-200 unlock tool

When program recovery is necessary (Levels 2 and 3), various third-party tools are frequently cited in the automation community: A more recent addition that explicitly blocks program

If the password is lost, the only official way to regain access to the hardware is to erase it completely. Connect your PC to the PLC using a PPI or USB/PPI cable. Set the PLC hardware switch to STOP mode. s7-200 unlock tool