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The 'Observer' Pattern for CODESYS 3

Original Poster: Armando Rene Narvaez Contreras

The observer pattern is a design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by calling one of their methods.

It is mainly used to implement distributed event handling systems, in "event driven" software. This pattern Mandatory studymaterial as it is widely used.