Panasonic FP-XH M8N16PD User Manual page 425

The password removal operation can only be performed in the "Allow
•
Access" status.
 Compulsory removal method (programs and security information all deleted)
1. Select [Tools] → [PLC Security Settings] → [Set PLC Password] from the menu bar.
The "Set PLC Password" dialog box is displayed.
2. Click the [Force Cancel] button.
The confirmation message is displayed.
22.1 Password Protection Function
22-7