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呆呆
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樓主  發(fā)表于: 2010-07-14 10:42


請各位大俠幫幫忙看看這程序，為什么用加法指令得出的結果跟用CCD指令得出的結果不一樣
ak47m16u571
苦海無(wú)邊，柴米似鞭。歡樂(lè )無(wú)限，煩擾靠邊。得逍遙處且逍遙
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1樓  發(fā)表于: 2010-07-14 10:52
CCD 是通信校驗，
你去看一下通信數據的校驗吧，
這可不是十進(jìn)制加法哦
呆呆
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2樓  發(fā)表于: 2010-07-14 11:15
我是要用CCD來(lái)求plc與變頻器的校驗和的。問(wèn)題已經(jīng)解決了。不知道plc有什么問(wèn)題，換了一臺plc就可以的一樣了

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