It is assumed that basic concepts of OPC UA information modelling and IEC 61131-3 are understood in this document. This document will use these concepts to describe the OPC UA Client Function Blocks for IEC 61131-3 Information Model. For the purposes of this document, the terms and definitions given in OPC 10000-1, OPC 10000-3, OPC 10000-4, OPC 10000-7, as well as the following apply.

FBFunction Block

UA(OPC) Unified Architecture

XMLExtensible Markup Language