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bite
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樓主  發(fā)表于: 2009-04-27 14:11
        既然個(gè)PLC斷電了，已經(jīng)沒(méi)有電源輸入進(jìn)去，那PLC又怎么可以把時(shí)間繼續計下去呢，奇怪呢？？例如CPM2A
[ 此帖被bite在2009-04-27 14:45重新編輯 ]
3066445
殘酷的現實(shí)容不下過(guò)于美好的夢(mèng)境
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1樓  發(fā)表于: 2009-04-30 10:49
可以設定所有I/O存儲器具有保持特性
記住該記住的，忘記該忘記的。改變能改變的，接受不能改變的

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