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主要论述现场总线PROFIBUS的体系结构、参考模型和网络协议 ,并以SINECL2网为例 ,说明该网络的编程方法及其在MDF热压机控制系统中的应用“,”The architecture,referenced model and metwork protocol of PROFIBUS are presented in this paper.AS an example,SINEC L2 network\'\'s programe and its application in MDF press control system is introduced.