Can't download to the controller

The error message you receive indicates one of the following conditions:

Another user is making a change to the controller

When the change is completed, you will be able to download. You should consult with the other user before downloading over their changes.

The controller is locked by another user

Locking the controller prevents other users from downloading and making other types of changes to a controller. You will not be able to download until the other user releases the lock. You should consult with the other user before downloading over their changes.

The controller is secured

The

Logix Designer

application can’t upload, download, or go online with a secured controller. Unsecure the controller and try again.