ZEN Programmable Relays: Is there a password function?

Yes. The password protection is provided for the following items.

V2 and V1 Units

Editing ladder program

Program all clear

Ladder monitoring

Changing/clearing password

Changing backlight OFF time

Setting input filter

Setting node number

Pre-V1 Units

Editing ladder program

Ladder monitoring

Changing/clearing password

Changing backlight OFF time

Setting input filter

Setting node number