Exploitation And Realization Of Intelligent Slave Station Based On PROFIBUS-DP

Fieldbus is a comprehensive technology with its contents based on intelligence sensor,controlling (protocol), computer, digital communication, etc. It has attracted the attention from a world wide range, become the major focus of the automation development ,and will result in the revolution of automation structure and product in recent years. PROFIBUS fieldbus technology has been developed in a speedy fashion ,and more and more manufacturers develop and use PROFIBUS bus technology. PROFIBUS-DP is suitable for high-speed data exchange.This thesis introduced the composition of PROFIBUS and basic characteristic( protocol structure, transmission technology, protocol of visiting PROFIBUS, etc.) .It has explained the function and communication mechanism of PROFIBUS-DP in detail, analyzed thoroughly the realization of PROFIBUS-DP communication, explained the task and realizing of DP master and slave station,and analysed exhaustivly protocol chip SPC3.This thesis has recommended FCS which based on PROFIBUS-DP to form, 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 MSP430 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, Internet. Wish this paper could bring forward some thoughts for domestic fieldbus industrialization.