| The Control Area Network-CAN belongs to the category of fieldbus. It is an actual effect support distribution type control or aserial communicatioan network in real-time-controlling, which was developed by the German Bosch Company for resolving the digital exchange between controller and measuring instrument in modern car of many casea. The bue CAN has the functions of in polysleeve way, non-destructive bus arbitration technigue, super-strong-error measurement and high communication rate etc. which have been widely used in the various low cost, high anti-interference multi-machine systems.This paper is aimed at the developed tendency for the industrial supervision in which the conmnmicatioan power-supply distribution of supervision system in the fieldbus technigue CAN is provided. The defaults what exist in by traditional supervision system of collecting and distributing controlling can be resolved effectively. It makes fransmission media connect the supervision center and the field communicatioan interface moudule to hang at the fieldbus CAN. It consists of acontroller regional network, therefore, dispersion controlling and unitized management to various on-line message power-supply equipment have been realized. According to the standard of CAN agreement the message agreement for the system has been designed. Whose design thinking and its realizing way of the three kernel parts (CAN kard^ CAN oriented object and field communicatioan interface moudule)in the system have been given. It is applied by the oriented subject technigue, and through the analyses of ststic characteristic, and dynamic characteristic of the equipment, the configuration tool category has been gotten to complete the configuration to equipment. |
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