PROFIBUS-DP是一種用于現(xiàn)場設(shè)備級控制系統(tǒng)和分散式I/O通訊的協(xié)議。本文從開發(fā)的角度描述了使用SPC3實現(xiàn)PROFIBUS通訊接口的一種方法，并在此基礎(chǔ)上建立了一種采用PID算法的過程控制系統(tǒng)，最后利用OPC接口技術(shù)在以太網(wǎng)上實現(xiàn)數(shù)據(jù)服務(wù)與監(jiān)控的分離，從而達到整個系統(tǒng)的網(wǎng)絡(luò)化。
關(guān)鍵詞：PROFIBUS-DP；SPC3；過程控制 OPC接口
Abstract: PROFIBUS-DP is a protocol used in field facility control system and dispersed I/O communication. This paper describes a method of implementing the communication interface usingSPC3 by development point of view ，and establishes a kind of process control system using PID arithmetic, then implements the separation of data serving and monitored control by OPC interface technique on Ethernet, so that networked entire system..
Key words: PROFIBUS-DP；SPC3；process control；OPC interface.