While tools like S7Key V3.14 are handy for emergencies, they fall into a legal gray area regarding intellectual property. If you are working in a corporate environment, consider these "official" routes first:
If you have a connection but need to clear confidential configuration data, you can go to in TIA Portal and click the "Delete" button under the "Password to protect confidential PLC configuration data" section [4]. Note that this may cause the project to stop working if it relied on that encryption [4]. 3. Managing Passwords via Memory Card passwordfindplc siemens s7keys7v314 verified
Do not rely on "S7Key" downloads found online. If the logic While tools like S7Key V3
: Use an empty SIMATIC Memory Card (MMC) configured as a "Transfer" card. Inserting this card while the CPU is powered erases the internal load memory and removes the password protection. Inserting this card while the CPU is powered