<p>In recent years, many technologies have emerged to fulfil the requirements of smart manufacturing. Cyber-Physical System (CPS) is one of the critical technologies that enable the integration of the physical world and the cyber world in smart manufacturing, consisting of the physical entity, the Digital Twin, and the connection between them. The shop floor is a complex system supporting various production activities, and implementing the cyber-physical shop floor will effectively improve production efficiency. Shop-floor Digital Twin is the focus of developing a cyber-physical shop floor. Various research works have been done on shop-floor Digital Twin, especially on the architecture of shop-floor Digital Twin. However, more research is still needed on implementing shop-floor Digital Twin in cyber-physical shop floors. In this paper, the definition and features of the cyber-physical shop floor are explored. After that, a shop-floor Digital Twin architecture is proposed, and its functions to support shop-floor activities are analysed in the context of a cyber-physical shop floor. Finally, a case study is carried out based on the smart manufacturing cell at the University of Auckland for demonstration.</p>