Unlocking Siemens S7-200 Passwords Unlocking a Siemens S7-200 PLC typically falls into two categories: (which involves clearing the device) or unauthorized cracking (recovering the existing program). 1. Official Method: Clearing the PLC

Run WIPEOUT.EXE and follow the prompts to clear the PLC's internal RAM and EEPROM.

(6ES7 901-3CB30-0XA0) to connect your PC to the CPU's RS-485 port. Open STEP 7-Micro/WIN