ABSTRACT
Fieldbus technology is the derivative products of the development of computer, automation control, and communication technologies at this stage, As the new technology in industry automation field ,it is becoming a hot spot in the world. Fieldbus technology appeared about only twenty years, but it leads the irreversible development direction, because of its digital feature that can transfer control function and device management to scene. Fieldbus technology is adopted widely not only can reduce sharply the costs of the system, improve appreciably the control quality, but also can enrich the control information to us and improved integration, openness, distributivity and interoperability of the control system. So it has great practical significance to apply Fieldbus technology actively in automation control system.
