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六月半夏
熱愛(ài)工控行業(yè)...
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注冊時(shí)間: 2012-02-24
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樓主  發(fā)表于: 2012-03-29 21:57
         今天編一個(gè)程序，有一個(gè)小問(wèn)題，兩地運料車(chē)，在A(yíng)、B之間來(lái)回裝料，卸料（自動(dòng)往返），兩地有行程開(kāi)關(guān)，
用plc300編的控制程序，若斷電，上電后，小車(chē)從斷電的狀態(tài)開(kāi)始繼續運行，該腫么考慮？可能問(wèn)題有點(diǎn)白癡，但
希望前輩們多多指點(diǎn)，有什么很簡(jiǎn)單的方法？是不是有什么斷電保持的繼電器？
新浪博客http://blog.sina.com.cn/u/3043076594
蕭峰
級別: 探索解密
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注冊時(shí)間: 2012-03-28
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1樓  發(fā)表于: 2012-04-05 11:06
可以用DB塊，除了具有保存功能還可以計算

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