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wytopkk
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樓主  發(fā)表于: 2007-09-01 12:05
          怎樣在S7-300/400編程中實(shí)現s7－200中的特殊繼電器功能？比如常閉觸點(diǎn)、秒脈沖等。怎樣實(shí)現？或者參考哪本手冊？
boy
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1樓  發(fā)表于: 2009-05-15 19:44
我又學(xué)到了一點(diǎn)知識，謝謝了！

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