Technical rules not only define interfaces as a basis for interchangeability, comparability and interoperability, but also give their users the certainty about safety and quality. Technical rules contain the experience of many experts and are important for designers, developers and system integrators to make their work more efficient and reliable. Especially for Industrie 4.0, which stands for high-grade networking and dynamic processes, this is a central element. Standardized interfaces contribute to a complete, bi-directional exchange of information in a holistic digital process chain.