| The traditional industrial control software adopts the already existing customization driver mode, software vendor has to develop a great deal corresponding driver for various kinds of hardwares. Owing to the different requires of clients and the different transport protocols, there are not still whole deal with. The key is that there are not uniform interface between systems.The new developing one, OPC "softbus" technology on the basis of Microsoft COM/DCOM, for the data communication of the industrial control (Data Collection), the integration of the heterogeneous system and the construction of the mufti-layer software system, offer the new standard. OPC can achieve "omnipotent connection" between automatic control software and hardware, and consequently, realize flexible configuration and genuine integration in systems.This thesis, is it to COM/DCOM simple exposition of technology, prove OPC foundation of technology to pass. And it overall illuminates the basic OPC conception, the structure of the C/S. This paper lucubrates the application of OPC in the heterogeneous system integration, and search out the design method of OPC date access server based on yudian intelligent instrument AI808. This server already passes compatibility test and realize the standardization of driver. Finally, this thesis gives a practical application of OPC server in configuration software. |
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