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    For pneumatic system controls, a data transmission system is needed with high speed and reliability for information interchange between main computer and I/O devices. This paper presents a set of design techniques for a data communication system that is mainly used for pneumatic system controls. For this purpose, we first designed hardware modules for an interface between the central control module and the local node that handles the operation of solenoid valves. In addition, a communication protocol is developed for construction of RS-485 based multi-drop network, and this protocol is basically designed with a kind of polling technique. Finally we the performance of the developed system is evaluated. The field test results show that, even under high noise environment, the data transmission of 375Kbps rate is possible up to 1, 000m without using repeater. In addition, the system developed in this research can be easily extended for a communication network because of its modular structure.
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    The procedure, method and advantages of application of Fieldbus technology in electric control system are introduced. The configuration and functions of the system as well as its advantages are detailed.
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    At first, this paper gives a brief introduction to fieldbus control system and distributed control system Then some considerations for fieldbus control system in practical application are discussed emphatically Finally some suggestions about to selecting a fieldbus control system are provided
    Foundation Fieldbus H1
    Distributed control system
    Profibus
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    Application of fieldbus technique in SECCO Polypropylene Plant is introduced and related items including fieldbus structure,fieldbus power,fieldbus communication,fieldbus cable and field device management,which need pay attention to in engineering design are expounded.Design of fieldbus implementation is discussed.
    Foundation Fieldbus H1
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    The means,character and superiority of the fieldbus used in process control system are described.With the appearance of fieldbus fechnology,control system is becoming more distributed,intellgent and network.The new control system based on fieldbus (FCS)will replace the tradtional control system(DCS).Main production,standard and the developing of the fieldbus in the world are introduced.
    Foundation Fieldbus H1
    Distributed control system
    Profibus
    Citations (0)
    Based on fieldbus technique this article introduces the characteristics of control system in method choice,designing,installing and running, and as well as the fulfillment of fieldbus control system.
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    This paper introduces the characteristics and the international standards of fieldbus technology. It expounds the differences between Fieldbus Control System and Distribution Control system, and the differences between the Fieldbus Control System and Information Network System. The application of fieldbus technology is also briefly introduced in the end.
    Foundation Fieldbus H1
    Profibus
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    The design of selection of fieldbus devices is very important.According to the minimum of communication in fieldbus,the selections of fieldbus devices in a simple control system are discussed.
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    Fieldbus is a data line that is set up between the spot equipment in the process and the automatic control system in the control room. The comparisons of fieldbus and traditional PLC control system were introduced. The selection, application and characters of fieldbus in the ammonia refrigeration control system were explained. It is proved that fieldbus is the best way to solve the problem of separated industrial automatic control.
    Profibus
    Automatic control
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    In this article the composition of Fieldbus Control System and some kinds of fieldbus products are introduced in order to illustrate the importance of finding wide application of the fieldbus control system in the field of industrial control.
    Foundation Fieldbus H1
    Profibus
    Field bus
    Industrial control system
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