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zlc1210903
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樓主  發(fā)表于: 2011-11-10 08:44
圖片：
圖片：
這是書(shū)上的截圖，說(shuō)是拓展的I/O只有30點(diǎn)。
但是說(shuō)明書(shū)上說(shuō)總數不超過(guò)128點(diǎn)
說(shuō)明上照的不清楚
說(shuō)明書(shū)的原話(huà)是：基本單元、拓展單元可連接用于擴展輸入輸出的點(diǎn)數的擴展模塊或用于功能擴展模塊的特殊功能模塊。合計的輸入輸出點(diǎn)數含該占有點(diǎn)數，控制在128點(diǎn)以下。
羨慕高手，希望有一天我也成為高手。
wangsai0501
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1樓  發(fā)表于: 2011-11-10 16:01
應該是擴展模塊最大的點(diǎn)數  跟總點(diǎn)數沒(méi)關(guān)系

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