DSQC679

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描述

DSQC679

?隨著半導(dǎo)體技術(shù)，尤其是微處理器和微型計(jì)算機(jī)技術(shù)的發(fā)展，到70年代中期以后，特別是進(jìn)入80年代以來，PLC已廣泛地使用16位甚至32位微處理器作為中央處理器，輸入輸出模塊和外圍電路也都采用了中、大規(guī)模甚至超大規(guī)模的集成電路，使PLC在概念、設(shè)計(jì)、性能價(jià)格比以及應(yīng)用方面都有了新的突破。這時(shí)的PLC已不僅僅是邏輯判斷功能，還同時(shí)具有數(shù)據(jù)處理、PID調(diào)節(jié)和數(shù)據(jù)通信功能，稱之為可編程序控制器（ProgrammableController）更為合適，簡稱為PC，但為了與個(gè)人計(jì)算機(jī)（Persona1Computer）的簡稱PC相區(qū)別，一般仍將它簡稱為PLC（ProgrammableLogicController）。
? ? PLC是微機(jī)技術(shù)與傳統(tǒng)的繼電器-接觸器控制技術(shù)相結(jié)合的產(chǎn)物，其基本設(shè)計(jì)思想是把計(jì)算機(jī)功能完善、靈活、通用等優(yōu)點(diǎn)和繼電器控制系統(tǒng)的簡單易懂、操作方便、價(jià)格便宜等優(yōu)點(diǎn)結(jié)合起來，控制器的硬件是標(biāo)準(zhǔn)的、通用的。根據(jù)實(shí)際應(yīng)用對(duì)象，將控制內(nèi)容編成軟件寫入控制器的用戶程序存儲(chǔ)器內(nèi)。繼電器控制系統(tǒng)已有上百年歷史，它是用弱電信號(hào)控制強(qiáng)電系統(tǒng)的控制方法，在復(fù)雜的繼電器控制系統(tǒng)中，故障的查找和排除困難，花費(fèi)時(shí)間長，嚴(yán)重地影響工業(yè)生產(chǎn)。在工藝要求發(fā)生變化的情況下，控制柜內(nèi)的元件和接線需要作相應(yīng)的變動(dòng)，改造工期長、費(fèi)用高，以至于用戶寧愿另外制作一臺(tái)新的控制柜。而PLC克服了繼電器-接觸器控制系統(tǒng)中機(jī)械觸點(diǎn)的接線復(fù)雜、可靠性低、功耗高、通用性和靈活性差的缺點(diǎn)，充分利用微處理器的優(yōu)點(diǎn)，并將控制器和被控對(duì)象方便的連接起來。由于PLC是由微處理器、存儲(chǔ)器和外圍器件組成，所以應(yīng)屬于工業(yè)控制計(jì)算機(jī)中的一類。
? ? 對(duì)用戶來說，可編程控制器是一種無觸點(diǎn)設(shè)備，改變程序即可改變生產(chǎn)工藝，因此如果在初步設(shè)計(jì)階段就選用可編程控制器，可以使得設(shè)計(jì)和調(diào)試變得簡單容易。從制造生產(chǎn)可編程控制器的廠商角度看，在制造階段不需要根據(jù)用戶的訂貨要求專門設(shè)計(jì)控制器，適合批量生產(chǎn)。由于這些特點(diǎn)，可編程控制器問世以后很快受到工業(yè)控制界的歡迎，并得到迅速的發(fā)展。目前，可編程控制器已成為工廠自動(dòng)化的強(qiáng)有力工具，得到了廣泛的應(yīng)用。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價(jià)格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，福克斯波羅、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(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來也就簡單了。

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