基于PC 的控制系統是自動化技術發展的一個新的方向，具有成本低、開放性好、與IT
技術兼容性好等優點。針對工業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PC 機及軟邏輯（SOFTPLC）控制軟件為控制器、以PROFIBUS-DP 現場總線為網絡的分布式監控系統。同時利用組態王提供的人機界面完成了對現場數據的實時采集和處理。本文分析了基于PC 的現場總線控制技術和實現方法，重點闡述了系統的硬件設計和軟件設計。
關鍵詞：PROFIBUS-DP；PC；防爆；組態軟件
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