Koyo Plc Password Unlock

: Most Koyo units (DL05, DL06, DL205) allow you to reset the PLC to factory default by clearing the user memory. This completely erases the program and the password. You lose the code, but you get the PLC back. (Method: Set the dip switch to "Program" or "Terminal," cycle power, and use DirectSOFT to "Write to PLC" a blank program).

: For critical machines where you cannot lose the program, specialists desolder the EPROM or MCU from the board, read the hex directly, and nullify the password check. This costs $300-$600 but has a 90% success rate. koyo plc password unlock