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MOTOROLA MVME162-023A步進(jìn)指令及編程方法
• FX系列PLC除20條基本指令外，還有兩條
功能很強(qiáng)的步進(jìn)順控指令，簡稱步進(jìn)指
令。
• 采用步進(jìn)指令編程，方法簡單，思路清
晰，規(guī)律性較強(qiáng)，工作效率高，給調(diào)試、
修改程序帶來很大的方便，可以解決較復(fù)5.3.1順序控制及狀態(tài)流程圖
• 順序控制：就是按照生產(chǎn)工藝所要求的動作規(guī)
律，在各個輸入信號的作用下，根據(jù)內(nèi)部的狀態(tài)
和時間順序，使生產(chǎn)過程的各個執(zhí)行機(jī)構(gòu)自動
地、有秩序地進(jìn)行操作
MOTOROLA MVME162-023A在順序控制中，生產(chǎn)過程是按順序、有步驟地連
續(xù)工作，因此，可以將一個較復(fù)雜的生產(chǎn)過程分
解成若干步驟，每一步對應(yīng)生產(chǎn)過程中一個控制
任務(wù)，也稱一個工步（或一個狀態(tài)）。在順序控
制的每個工步中，都應(yīng)含有完成相應(yīng)控制任務(wù)的
輸出執(zhí)行機(jī)構(gòu)和轉(zhuǎn)移到下一工步的轉(zhuǎn)移條件。
雜的順序控制問題。、V、Z。功能：將源順序控制特點(diǎn)：
• （1）每個工步（或狀態(tài)）都應(yīng)分配一個狀態(tài)控制
元件，確保順序控制能按控制要求順序進(jìn)行。
• （2）每個工步（或狀態(tài)）都具有驅(qū)動負(fù)載的能
力，能使該工步的輸出執(zhí)行元件動作。
• （3）每個工步（或狀態(tài)）在轉(zhuǎn)移條件滿足時，都

會轉(zhuǎn)移到下一個工步，而上一工步自動復(fù)位。操作

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