Realization Of Intelligent Slave Station Based On Profibus-dp

Applying of the Fieldbus technology will simplify the structure of the contnol system,decrease its extra expenses,and make the system maintenance becone easy.Fieldbus control system can be constructed by different produce and different equipment,and becomes the trend of the development of automation and control.PROFIBUS has already become one of the openly international standards and been widely used over around the world.PROFIBUS-DP is a kind of optimized communication connection with high speed and cheap expense.It can realize the communication of the automatic control system to the distribute I/O equipment.the design comes from the reform of car dumper electrical system in QinHuangDao port,it needs a constant temperature control slave station in that project.This thesis has recommended FCS which based on PROFIBUS-DP technology, proposed realization scheme of intellectual DP slave station,realized DP slave station which has been analyzed in using SPC3,and developed a intellectual DP constant temperature slave station of relying on AT89C52 processor and SPC3 chip to form.This paper accomplished with the slave's hardware component selection and circuit design,and the algorithm analyses and program realization of the slave is also accomplished.This paper explains how to insert the independent system a control network, and then enter Intranet.Wish this paper could bring forward some thoughts for domestic field bus industrialization.