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zhangdabao
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樓主  發(fā)表于: 2011-01-02 19:42
不太明白S-200中的SM0.1的定義，手冊上說(shuō)首次掃描為1，是不是在PLC整個(gè)運行的時(shí)候只有第一個(gè)掃描周期為一��？剩下的掃描周期里都不為1？
wwcwwc
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1樓  發(fā)表于: 2011-01-02 20:14
是的。一般用作程序的初始化數據等方面。

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