These design-patterns come from various sources all around the internet.
I decided to study and rework / translate them into Codesys V3.
The patterns are ideally suited for selfstudy purpose.
Kudo's go out to the original posters.
Allthough design patterns can ease your life significantly, the best solution is always the simplest (and/ or procedural) solution, no matter what fancy pattern you throw at it!