描述

簡而言之，MC是通用的專用機。而PLC是專用的通用機。

微型計算機是在以往計算機與大規(guī)模集成電路的基礎上發(fā)展起來的，其最大特點是運算速度快，功能強，應用范圍廣，在科學計算，科學管理和工業(yè)控制中都得到廣泛應用。所以說，MC是通用計算機。而PLC是一種為適應工業(yè)控制環(huán)境而設計的專用計算機。但人工業(yè)控制的角度來看，PLC又是一種通用機，只要選配對應的模塊便可適用于各種工業(yè)控制系統(tǒng)，而用戶只需改變用戶程序即可滿足工業(yè)控制系統(tǒng)的具體控制要求。而MC就必須根據(jù)實際需要考慮抗干擾問題及硬件軟件的設計，以適應設備控制的專門需要。所以說MC是通用的專用機。

基于以上理解，便可以得出MC與PLC具有以下幾點區(qū)別：

（1）PLC抗干擾性能為MC高

（2）PLC比MC編程簡單

（3）PLC設計調(diào)試周期短

（4）PLC的I/0響應速度慢，有較大的滯后現(xiàn)象（MS），而MC的響應速度快（US）。

（5）PLC易于操作，人員培訓時間短；而MC則較難人員培訓時間長；

（6）PLC易于維修，MC則較困難

隨著PLC技術(shù)的發(fā)展，其功能越來越強；同時MC也逐漸提高和改進兩者之間將相互滲透，使PLC與MC的差距越來越小，但在今后很長一段時間內(nèi)，兩者將繼續(xù)共存。在一個控制系統(tǒng)中，PLC將集中于功能于功能控制上，而MC將集中于信息處理上。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

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