Interface Technology Research Of DCS And Real-time Database

Nowadays, Distributed Control System (DCS) is extensively used in process controlindustry as it could provide tremendous amount of information for management, control anddecision. With the development of the science and technology, more and more DCS productswith multiple functions are available. When DCS manufacturers are trying to lower the cost toenhance their competitiveness, in the meantime, it brings the birth of general controlcomponents and open interface standard, which evolves the effective separation of hardwareand application software. In the modernized industrial control system, it realizes datainterconnection and data sharing among different models from different DCS manufacturers.With the development of telecommunication technology, there is an urgent need of thesource integration between control system and information system in the industrial enterprises,which brings the development of real-time database. It coordinately and efficiently integratesand stores together equipment data and status from DCS, raw material consumption data andcapital flow information, which enables the management at various levels obtain the consistentreal-time data timely. Thus, the two-way communication between DCS and real-time databaseis the foundation for enterprises realizing advanced control and Management&Controlintegration.In this article, it mainly discussed the interface realization for the two waycommunication between API from ABB Advant500OCS AEH console and RDI fromHONEYWELL PHD real time database. Firstly it analyses the communication mechanism ofABB Advant500OCS AEH console and API function. Then it gives a brief introduction ofHONEYWELL PHD database and its RDI function overview. And starting from local RDI, itintroduces the interface realization, definition, test and installation methods as well as theinterface status display. Based on that, it analyzes the methods for remote RDI and completesAPC data communication task by actual operation.The interface realization between DCS and real-time database not only enablesenterprises to make full use of DCS hardware function but also realizes advanced control and real-time optimization through the deep development of real-time database and utilization ofDCS resources, which therefore contributes to the economic benefit improvement.