Abstract
This status report provides the foundation for a refer-ence model of the Industrie 4.0 (I4.0) Service Archi-tecture. This is the starting point for an implementa-tion concept of the I4.0 Asset Administration Shell. This concept hinges on a technology-independent set of services to interact with I4.0 Components, a tech-nology-independent way to describe information, and an approach to map the former onto specific M2M technologies.
It provides a classification of services according to the RAMI4.0 Layers that they relate to (data transport on the communication layer, information access on the information layer, platform administration services on the functional layer).
It provides and outlines the building blocks for the structured, distributed information models, and pro-poses means to express data semantics within these models (through semantic tags or references).
In conclusion, it provides a definition of the asset administration shell from the perspective of a service-oriented system architecture. It submits that it is pos-sible to define the data and functionality of assets and how this information is accessed in a technology-independent manner. It de-couples the life-cycles of information and technology, leading to a sustainable overall system architecture. By then mapping these service and modeling concepts to technologies like OPC UA, it becomes possible to implement I4.0 As-set Administration Shells in a modular manner, and it helps to achieve semantic interoperability between the I4.0 Components.
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