2711-K6C15L1

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描述

2711-K6C15L1

在PLC設(shè)計(jì)的時(shí)候，多是出于自己對(duì)電氣控制的電路設(shè)計(jì)而轉(zhuǎn)換過(guò)來(lái)的，但是這兩個(gè)方面都還上有點(diǎn)區(qū)別，所以在很多時(shí)候都面對(duì)一個(gè)題目都要看很久，這讓我想起了一種方法。

? ? 對(duì)于一個(gè)問(wèn)題總是有它的多面性，也就是說(shuō)什么問(wèn)題都能給它化整為零，把它的要求一步步的展開(kāi)，一個(gè)一個(gè)的進(jìn)行設(shè)計(jì)，然后再對(duì)把一個(gè)一個(gè)的合攏，然后在對(duì)全局進(jìn)行考慮，這樣就避免了思維的錯(cuò)亂。這個(gè)看起來(lái)有點(diǎn)像在順序控制的時(shí)候用功能圖去表示了，其實(shí)不是的，這個(gè)就像砌房子，把一塊塊磚頭砌上去，再整合就達(dá)到了目的，我覺(jué)得比那個(gè)好理解些。
? ? 在一個(gè)問(wèn)題的設(shè)計(jì)時(shí)我是這樣子看的，首先看看它要什么要求，然后再把它的要求分為幾個(gè)塊，再針對(duì)每個(gè)塊又分成幾個(gè)塊。最后就是針對(duì)每個(gè)小塊編程，最后把程序稍做修改就達(dá)到了目的，最后在PLC上檢查并簡(jiǎn)化程序。
? ? 設(shè)計(jì)可編程控制器時(shí)，安全性是第一重要的，即即使在外部的電源發(fā)生異常時(shí)，可編程控制器出現(xiàn)故障時(shí)，整個(gè)系統(tǒng)也能在安全狀態(tài)下工作，請(qǐng)務(wù)必在可編程控制器外部，設(shè)置安全電路，誤操作，誤輸出是產(chǎn)生事故的原因。
? ? 1。務(wù)必在可編程控制器外部，設(shè)置如下幾種電路，
? ? 緊急停止電路，保護(hù)電路，正轉(zhuǎn)逆轉(zhuǎn)等相反操作的連鎖電路，定位的上限/下線等防止損壞的連鎖電路。
? ? 2.可編程控制器CPU有監(jiān)視定時(shí)器等自檢功能
? ? 可編程控制器CPU以監(jiān)視定時(shí)器等自檢功能，檢測(cè)出異常時(shí)，輸出全部關(guān)閉，擔(dān)當(dāng)可編程控制器的CPU檢測(cè)不出輸入輸出控制部分的異常時(shí)就不能控制輸出，這時(shí)，為使機(jī)器在安全狀態(tài)下運(yùn)行，請(qǐng)?jiān)O(shè)計(jì)外電路及機(jī)構(gòu)
? ? 3.設(shè)計(jì)確保傳感器的后備電源產(chǎn)生過(guò)負(fù)荷時(shí)的安全：
? ? 傳感器的后備電源產(chǎn)生過(guò)負(fù)荷時(shí)，電壓自動(dòng)下降，除可編程控制器輸入不工作之外，全部輸出都關(guān)閉，這時(shí)，請(qǐng)?jiān)O(shè)計(jì)外電路和機(jī)構(gòu)，以使其在安全狀況下工作。
? ? 4.設(shè)計(jì)確保當(dāng)有與重大故障有聯(lián)系的輸出信號(hào)時(shí)機(jī)器的安全：
? ? 因輸出繼電器，晶體管的故障，輸出時(shí)而為ON,時(shí)而為OFF的現(xiàn)象出現(xiàn)，當(dāng)有與重大故障有聯(lián)系的輸出信號(hào)時(shí)，請(qǐng)?jiān)O(shè)計(jì)外電路和機(jī)構(gòu)，以使機(jī)器在安全狀況下運(yùn)行.

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(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
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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(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：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(lè)，ACSO，力士樂(lè)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(cè)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(lái)也就簡(jiǎn)單了。

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