Before reaching for hardware hacks, try this:
, can be used to reset the CPU to factory defaults. This utility deletes the user program, data blocks, and configuration while resetting communication settings like the baud rate. PLC Menu Command : In the programming software, selecting PLC > Clear… s7-200 smart plc password unlock
: Use the WIPEOUT.exe utility, which may be found on the original installation CD or official Siemens Support site . This tool resets the CPU to its pristine delivery state, including baud rate (9.6 kbit/s) and network address (address 2). Before reaching for hardware hacks, try this: ,
These tutorials provide visual guides for clearing PLC passwords and performing factory resets on S7-200 SMART hardware: S7-200 SMART PLC Password plc247 Automation Before reaching for hardware hacks