A350-8001-T922/02

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描述

A350-8001-T922/02

在PLC的存儲器中，設(shè)置了一片區(qū)域用來存放輸入信號和輸出信號的狀態(tài)，它們分別稱為輸入映像寄存器和輸出映像寄存器。PLC梯形圖中的其他編程元件也有對應(yīng)的映像存儲區(qū)，它們統(tǒng)稱為元件映像寄存器。
? ? 在輸入處理階段，PLC把所有外部輸入電路的接通，斷開狀態(tài)讀入輸入映像寄存器。外部輸入電路接通時，對應(yīng)的輸入映像寄存器為l狀態(tài)，梯形圖中對應(yīng)的輸入繼電器的常開觸點接通，常閉觸點斷開。外部輸入觸點電路斷開時，對應(yīng)的輸入映像寄存器為0狀態(tài)，梯形圖中對應(yīng)的輸入繼電器的常開觸點斷開，常閉觸點接通。
? ? 某一編程元件對應(yīng)的映像寄存器為l狀態(tài)時，稱該編程元件為ON，映像寄存器為0狀態(tài)時，稱該編程元件為OFF。
? ? 在程序執(zhí)行階段，即使外部輸入信號的狀態(tài)發(fā)生了變化，輸入映像寄存器的狀態(tài)也不會隨之而變，輸入信號變化了的狀態(tài)只能在下一個掃描周期的輸入處理階段被讀入。
? ? PLC的用戶程序由若干條指令組成，指令在存儲器中按步序號順序排列。在沒有跳轉(zhuǎn)指令時，CPU從第一條指令開始，逐條順序地執(zhí)行用戶程序，直到用戶程序結(jié)束之處。在執(zhí)行指令時，從輸入映像寄存器或別的元件映像寄存器中將有關(guān)編程元件的0／1狀態(tài)讀來，并根據(jù)指令的要求執(zhí)行相應(yīng)的邏輯運算，運算的結(jié)果寫入到對應(yīng)的元件映像寄存器中，因此，各編程元件的映像寄存器(輸入映像寄存器除外)的內(nèi)容隨著程序的執(zhí)行而變化。
? ? 在輸出處理階段，CP／7將輸出映像寄存器的0／1狀態(tài)傳送到輸出鎖存器。梯形圖中某一輸出繼電器的線圈“通電”時，對應(yīng)的輸出映像寄存器為1狀態(tài)。信號經(jīng)輸出模塊隔離和功率放大后，繼電器型輸出模塊中對應(yīng)的硬件繼電器的線圈通電，其常開觸點閉合，使外部負載通電工作。
? ? 若梯形圖中輸出繼電器的線圈“斷電”，對應(yīng)的輸出映像寄存器為0狀態(tài)，在輸出處理階段之后，繼電器型輸出模塊中對應(yīng)的硬件繼電器的線圈斷電，其常開觸點斷開，外部負載斷電，停止工作。

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(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。ACSO，橫河等進口品牌。 專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家

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專業(yè)銷售進口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，當天順豐發(fā)貨！
主營：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。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”（不管能不能看懂，先了解個大概，以便學習編程時查找）；
2、由位控邏輯入手，逐漸增加定時、計數(shù)等條件，把或、與、非關(guān)系理順；
3、進而練習整數(shù)運算、實數(shù)運算、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（最好是有個物理回路驗證，比如變頻器+電機+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)機器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動器系列為主攻。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，學會一種至于其它的學習起來也就簡單了。

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