The Extraction Equipment General document, OPC 40561-1, serves as an abstraction layer to all machines and systems that are classified as extraction equipment or systems. Therefore, it contains parent types and common features that are shared by two or more extraction equipment or systems. Documents detailing the extraction equipment or systems, that are part of the OPC 40561 multi-part documents, are given in Table 1.

Table 1 – Subdocuments of OPC 40561 Extraction Equipment

Document Name	Document Number	Description
General (This document)	OPC 40561-1	General Information about Extraction Equipment
Shearer Loader	OPC 40561-2	Machine specific information about the Shearer Loader machine

This document contains common OPC UA type definitions to all extraction equipment and systems.