You can also use the physical mode selector switch on the front of the CPU: Set the switch to . Remove the memory card.
For newer firmware versions (V2.9+), you can specifically delete the "confidential PLC configuration data" password via the Online & Diagnostics menu if you have a new project ready to load. Important Considerations
If you can still establish an "Online" connection but are blocked from certain operations:
Check the box "Delete password for protection of confidential PLC configuration data" if applicable. Click Reset and confirm the prompt. 3. Reset via the CPU Display
