This paper describes the open standard interface OPC technology, and on this basis proposes a solution for the real-time communication between MATLAB and MCGS based on OPC technology, and gives the specific implementation process. This solution uses the OPC toolbox integrated in MATLAB to realize the reading and writing of MCGS real-time data by MATLAB, and completes the real-time communication of MATLAB and MCGS data. The experiment proves that this method saves complex language programming, simplifies the development process, and is an effective method to realize the real-time communication of MATLAB and MCGS data. Keywords: OPC; MATLAB; MCGS; real-time communication In the process of control system configuration design, how to effectively implement the control algorithm has always been a common concern. The industrial control configuration software MCGS provides a friendly human-computer interaction interface and powerful communication functions, but its computing power is not strong, and it is difficult to implement complex control strategies. Matlab has powerful numerical analysis, calculation and drawing functions, and has a powerful control algorithm toolbox. It can complete the design, calculation, analysis and simulation of any complex control system. It has been widely used in various aspects of control system modeling and simulation, but its disadvantage is that it cannot be operated and controlled in real time, and there are not many hardware devices that can communicate directly with it. OPC (OLE for Process Control) is an extension of OLE, COM/DCOM interface based on Windows NT technology. It is a standard interface defined by OPC specification. When using third-party hardware, as long as the hardware developer provides OPC Server, software developers do not need to write low-level drivers. Data can be interacted with through the OPC Client of user software, making the integration of software and hardware between different manufacturers easy to achieve. This paper realizes real-time communication between MATLAB and MCGS based on OPC technology, which provides an effective way to realize the complementary advantages of MATLAB and MCGS and effectively implement control algorithms.
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