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I ran into the same situation a few months ago while migrating a project from EcoStruxure Control Expert (formerly Unity Pro) to Logix Designer.

Several DFBs were password protected and the client no longer had the passwords. I tried a few of the methods mentioned around here, including the ones from this post and a GitHub project named ControlExpertDFBPassword, but none of them actually worked in my case.

Eventually I found another approach that allowed me to fully recover the logic (of course, only with proper client authorization).

I’m not sharing any files or tools, but just wanted to confirm that it’s possible — so if anyone’s stuck with lost DFB passwords in Control Expert / Unity Pro, don’t give up too quickly.

– Garen
garenbyte@gmail.com

Thanks Garen, good to know
Maybe your passwords was not also strongly encrypted ?
Hereafter also an interesting link : https://medium.com/tenable-techblog/exa ... 7cf9f3ff34

Bonjour quelqu'un aurait le script de bernardo ils est plus disponible sur github !je vous remercie d'avance

Bernardo59 a écrit : ↑03 nov. 2021, 07:58 Bonjour,
Voici une petite procédure afin de retrouver le mot de passe d'un Derived Function Block sur Control Expert ou Unity Pro.
L'astuce a été testé sur EcoStruxure Control Expert V15 ainsi que sur la version 7.0 de Unity. Cependant, elle ne fonctionne pas si le cryptage est renforcé...

Salut.

J'ai un projet en V14, mais je n'arrive pas a retrouver la chaine magique qui delimite l'entete des mots de passe.
Y'aurai plusieurs variantes de niveau de protection ?