基于PC 的控制系統(tǒng)是自動化技術發(fā)展的一個新的方向，具有成本低、開放性好、與IT
技術兼容性好等優(yōu)點。針對工業(yè)生產中存在的安全問題，通過采用防爆型遠程I/O，建立了一套以工業(yè)PC 機及軟邏輯（SOFTPLC）控制軟件為控制器、以PROFIBUS-DP 現(xiàn)場總線為網絡的分布式監(jiān)控系統(tǒng)。同時利用組態(tài)王提供的人機界面完成了對現(xiàn)場數據的實時采集和處理。本文分析了基于PC 的現(xiàn)場總線控制技術和實現(xiàn)方法，重點闡述了系統(tǒng)的硬件設計和軟件設計。
關鍵詞：PROFIBUS-DP；PC；防爆；組態(tài)軟件
Abstract ： Control system based on PC is a new trend of automatic technology,
having advantage of low cost、good opening and compatibility with IT technology.
To the security problem existing in the industrial production, adopting explosionproof
type remote I/O, set up a distributed monitoring system using Industrial PC
and soft logic control software (SOFTPLC) as controller and PROFIBUS-DP as network.
And with the man-machine interface offered by Kingview, we succeeded in finishing
the real-time data acquisition and processing. This paper analyses the technology
and the realization method of the fieldbus control based on PC, and expounds the
hardware design and software design of the system.
Keywords：PROFIBUS-DP；PC；explosion-proof；Configuration software