Alcance
This document specifies a part of the application, the application layer, and the presentation layer.The application covers the— device model,— registry management,— connection management for streaming data,— diagnosis, and— error handling.The application layer covers the structure of MOST messages consisting of— addressing,— function block identifiers,— instance identifiers,— function identifiers,— operation types, and— timing definitions.The presentation layer covers the definition of data, basic data types and function classes.