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lqy19820329
lqy198203
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樓主  發(fā)表于: 2009-11-28 01:42
用 DECO指令編程實(shí)現三相步進(jìn)電機,要求如下:
( 1) 按照三相六拍方式運行,每步間隔時(shí)間是 2秒;
( 2) 觸摸屏上能實(shí)現步進(jìn)電機的正轉、反轉和停止。
( 3) 在試卷上畫(huà)出 PLC的 IO分配圖、 PLC的梯形圖和觸摸屏的畫(huà)面


題目四


計算 PLC輸入端的脈沖個(gè)數,當脈沖個(gè)數大于 PLC某個(gè)變量存儲器的設定值時(shí), PLC所控制的燈泡發(fā)光,經(jīng)過(guò)由 PLC位存儲器的設定值的時(shí)間后,燈滅。要求:


脈沖輸入端的信號及復位信號由人機界面提供,存儲器的設定值(十進(jìn)制)由人機界面設定并顯示;


正確連接 PLC的輸出端的信號,使 PLC能正常工作
[ 此帖被lqy19820329在2009-11-28 09:54重新編輯 ]
sky_fly
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1樓  發(fā)表于: 2009-11-28 10:32
為什么一定要用DECO來(lái)寫(xiě)呢
不是有更簡(jiǎn)單的指令嗎
像脈沖輸出指令啊

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