Abstract
The Computer Numerical Control machine tools in the digital workshop usually come from different manufacturers, and it is difficult to transfer information between upper-level systems and heterogeneous devices, so it is necessary to establish a complete and standardized information model to realize the interconnection of device information. In this paper, we analyze the composition structure of machine tools and production operation information, and establish a flexible and scalable information model of CNC machine tools according to the modeling rules of manufacturing equipment integrated information model. By developing OLE for Process Control Unified architecture server, the mapping of information model to OPC UA information model is realized, and it is verified that the client can access the information of CNC machine tools by accessing the server. It shows that the established CNC machine tool information model can be interconnected based on OPC UA protocol.
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