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chuguang
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樓主  發(fā)表于: 2014-08-08 12:53
FX-2N系統的PLC意外斷電處理 ：
當設備在意外情況下掉電，恢復供電時(shí)，當掉電時(shí)間大于 10 秒時(shí) HL1~HL4 循環(huán)閃 亮，按下 SB4 復位按鈕進(jìn)行復位。當掉電時(shí)間小于 10 秒時(shí)，設備繼續掉電前的狀態(tài)繼 續工作。

請問(wèn)：在這里面有掉電時(shí)間大于 10 秒和掉電時(shí)間小于 10 秒，這里的掉電時(shí)間怎么來(lái)計時(shí)？

補充：此題中用到了觸摸屏
chuguang
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1樓  發(fā)表于: 2014-08-23 16:28
引用
引用第2樓hikerlight于2014-08-19 11:15發(fā)表的  :
用狀態(tài)寄存器啊S500以后的可以掉電記憶

掉電時(shí)間大于 10 秒和掉電時(shí)間小于 10 秒，這里的掉電時(shí)間怎么來(lái)計時(shí)？能提供方法嗎？謝謝

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