GE DS3800HMPJ
(一)編程簡(jiǎn)單易學(xué)
PLC的編程大多采用類(lèi)似于繼電器控制線(xiàn)路的梯形圖形式,對(duì)使用者來(lái)說(shuō),不需要具備計(jì)算機(jī)的專(zhuān)門(mén)知識(shí),因此很容易被一般工程技術(shù)人員所理解和掌握。
(二)安裝簡(jiǎn)單,維修方便
PLC不需要專(zhuān)門(mén)的機(jī)房,可以在各種工業(yè)環(huán)境下直接運(yùn)行。使用時(shí)只需將現(xiàn)場(chǎng)的各種設(shè)備與PLC相應(yīng)的1/O端相連接,即可投入運(yùn)行。各種模塊上均有運(yùn)行和故障指示裝置,便于用戶(hù)了解運(yùn)行情況和查找故障。
由于采用模塊化結(jié)構(gòu),因此一旦某模塊發(fā)生故障,用戶(hù)可以通過(guò)更換模塊的方法,使系統(tǒng)迅速恢復(fù)運(yùn)行。
PLC的功能
(一)邏輯控制
(二)定時(shí)控制
(三)計(jì)數(shù)控制
(四)步進(jìn)(順序)控制
(五) PID控制
(六)數(shù)據(jù)控制
PLC具有數(shù)據(jù)處理能力
(七)通信和聯(lián)網(wǎng)
(八)其它
PLC還有許多特殊功能模塊,適用于各種特殊控制的要求,如:定位控制模塊,CRT模塊。
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