NAMUR Open Architecture (NOA) aims to generate greater benefits from existing system data. Particularly in older existing systems, the corresponding data is difficult to access. An interface for making the system data useable does not exist.
The NOA concept enables the standardized and secure export of the existing data from the current system. Often, the system does not have any modern interfaces. To take this into account, the classic automation pyramid is extended to include a side channel through which access-secure communication takes place.
In this context, the term “data diode” has been coined. Information can be extracted without anyone being able to penetrate the system.