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jiayuan2540
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樓主  發(fā)表于: 2015-01-13 15:29
一種利用觸摸屏擴展PLC，COM口的方法
普通PLC只有一個(gè)COM口，如下圖臺達DVP14SS2有兩路，一路232和一路485，能滿(mǎn)足基本使用，但此PLC不能擴展。如下提供一種擴展COM口的方法，不需要擴展模塊，利用觸摸屏的COM來(lái)擴展，點(diǎn)到為止，明眼人一看便知。
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892777011
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1樓  發(fā)表于: 2015-01-13 16:29
用觸摸屏作為中繼讀寫(xiě)2個(gè)PLC

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