Rockwell Automation Logix5000 Controllers Security Programming Manual - Manual (Page 57)

Securing a ControlLogix controller Chapter 5
3. In the Browse for controllers to Secure/Unsecure dialog box, click the
controller that you want to be unsecured and then click OK.
4. In the Logix CPU Security - project_name dialog box, click Unsecure
Controller.
5. In the Unsecure Controller dialog box, in the Password box, type the
password for the controller and then click Unsecure.
The controller is now unsecured, but the controller still recognizes the
password.
6. Select Exit.
Rockwell Automation Publication 1756-PM016G-EN-P - October 2014 57