ControlLogix L35E: Reset to default

[Munieq]

Hey everyone,

i have problem with L35E CPU, is any possibility to restore CPU to factory state?

I'm asking because of password in "Logix CPU Security Tool". Now password exist (password is gone), CPU is unlocked (UNSECURED) and i have full access to PLC, but i want to set new password and without old password is not possible.

Do you have any solution for that issue?

Thanks

 

[nhatsen]

Start by reading the following technote (go to Rockwell site and create a free account to get access):

TN29669 Logix CPU Security Tool (Access Level: Everyone)

I only used this tool on ControlLogix. As far I remember, the password is cleared if you turn the power off and disconnect the battery. Also you have to remove the CF card in case the protected application is saved there.