If you do not need to retrieve the old program and simply want to reuse the hardware, you can download a new project over the existing one. Standard Download

To defend against password cracking and unauthorized access, the following measures are recommended:

: Some industrial protocols have historically transmitted passwords in clear text, which can be intercepted by network sniffers if the PLC is improperly configured. Xinje plc password lost | PLCtalk - Interactive Q & A

, use the "Download Program" function. Even if the current program is password-protected for , many Xinje models allow you to a new program to replace it. Stop PLC on Reboot

: Without lockout mechanisms, simple scripts can iterate through common 4-to-6 digit numeric codes over the programming port. 2. Theoretical Recovery Methods