PLC三層樓電梯系統(tǒng)設(shè)計(jì)與調(diào)試

設(shè)計(jì)要求
 三層電梯分別用1F、2F和3F表示1層、2層和3層。電梯必須具有如下功能：
 （1）電梯停于1F或2F時(shí)，按3F按鈕呼叫，電梯上升到3F才停止，由行程開(kāi)關(guān)SQ3停止。
 （2）電梯停于2F或3F時(shí)，按1F按鈕呼叫，電梯下降到1F才停止，由形成開(kāi)關(guān)SQ1停止。
 （3）電梯停于1F時(shí)，按2F按鈕呼叫，電梯上升到2F停止，由形成開(kāi)關(guān)SQ2停止。
 （4）電梯停于3F時(shí)，按2F按鈕呼叫，電梯下降到2F停止，由SQ2停止。
 （5）電梯停于1F，2F和3F均有按鈕呼叫，電梯先上升到2F，由SQ2控制暫停2S，然后上升到3F停止，由SQ3停止。
 （6）電梯停于3F，2F和1F均有按鈕呼叫，電梯先下降到2F，由SQ2控制暫停2S，然后下降到1F停止，由SQ1停止。
 （7）電梯上升途中或下降途中，任何反方向按鈕呼叫均無(wú)效；
 （8）每層樓之間到達(dá)時(shí)間應(yīng)在12S內(nèi)完成，否則電梯停機(jī)；

摘要：
PLC（可編程控制器）作為一種工業(yè)控制微型計(jì)算機(jī)，它以其編程方便、操作簡(jiǎn)單尤其是它的高可控性等優(yōu)點(diǎn)，在工業(yè)生產(chǎn)過(guò)程中得到了廣泛的應(yīng)用。它應(yīng)用大規(guī)模集成電路，微型機(jī)技術(shù)和通訊技術(shù)的發(fā)展成果，逐步形成了具有多種優(yōu)點(diǎn)和微型，中型，大型，超大型等各種規(guī)格的系列產(chǎn)品，應(yīng)用于從繼電器控制系統(tǒng)到監(jiān)控計(jì)算機(jī)之間的許多控制領(lǐng)域。隨著社會(huì)的不斷發(fā)展，樓房越來(lái)越高，而電梯成為了高層樓房的必須設(shè)備。電梯從手柄開(kāi)關(guān)操縱電梯、按鈕控制電梯發(fā)展到了現(xiàn)在的群控電梯，為高層運(yùn)輸做出了不可磨滅的貢獻(xiàn)。PLC在電梯升降控制上的應(yīng)用主要體現(xiàn)在它的邏輯開(kāi)關(guān)控制功能。由于PLC具有邏輯運(yùn)算，計(jì)數(shù)和定時(shí)以及數(shù)據(jù)輸入輸出的功能。在電梯升降過(guò)程中，各種邏輯開(kāi)關(guān)控制與PLC很好的結(jié)合，很好的實(shí)現(xiàn)了對(duì)的控制。
本文主要討論研究利用歐姆龍CPM1A PLC對(duì)電梯的升降進(jìn)行控制，形成電梯控制系統(tǒng)。

關(guān)鍵詞：PLC   電梯控制   歐姆龍   升降

ABSTRACT：
PLC (programmable controller) takes one industrial control microcomputer, it is convenient by its programming, simplicity of operator its merits and so on high controllability, obtained the widespread application particularly in the industrial production process. It applies the large scale integrated circuit, the miniature machine technology and the mechanics of communication development achievement, formed gradually had many kinds of merits and miniature, medium, large-scale, the ultra-large type and so on each kind of specification's serial products, applied to monitors between computer's many control domain from the black-white control system. Along with society's unceasing development, the building is getting higher and higher, but the elevator became the high-level building to the equipment. The elevator from the handle switch operation elevator, the push-button control elevator develops to present's group control elevator, has made the indelible contribution for the high-level transportation. PLC mainly manifests in the elevator cuing control's application in its logical switch control function. Because PLC has the logic operation, counting and fixed time as well as data feeds output function. In the elevator rises and falls in the process, each logical switch control and the PLC very good union, very good have realized to the fluctuation the control.
This article main discussion studies uses Simens in the S7-200 PLC to carry on the control to elevator's fluctuation, forms the lift control system.

key words:  Programmable Logic Controller    Lift control    Ohm of dragon     Fluctuation