Alcance
The content of this document is divided into two parts.— This document analyses the overall configuration of an industrial digital twin system, and proposes a three-elements architecture, focusing on the twinning interface between the physical twin (PTw) and industrial digital twin (iDTw).— The characteristics, and the visualization elements and visualization fidelity of iDTw are analysed.This document:a) analyses the twinning interface between the PTw and iDTw;b) proposes a three-elements architecture;c) analyses the visualization element and its fidelity, which is a key component of the interface among the three-elements architecture;d) analyses the elements that constitute an iDTw system to understand the unique properties of iDTw;e) explores the differentiation from cyber physical systems (CPS) or augmented reality (AR), which are similar to existing concepts of iDTw. This document excludes:— applications of iDTw;— implementation of iDTw.