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guanying14
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樓主  發(fā)表于: 2010-10-21 10:02
有沒(méi)哪位高手用過(guò)S7224XPCN的自由端口與用VB編寫(xiě)的軟件通訊咯？，以前我們編寫(xiě)的VB軟件和三菱的FX2N系列通訊的話(huà)，只需將端口的通訊參數寫(xiě)入D8120和設置站號，而軟件只需設定一樣的端口參數即可通訊。不知道西門(mén)子的通訊口這樣做行不行，看過(guò)實(shí)例，都是需要經(jīng)過(guò)初始化端口，編寫(xiě)接受、發(fā)送子程序、還用了不少的中斷。。挺復雜的。。而且當端口設置為自由端口通訊后。。。上位機與PLC之間的通訊線(xiàn)是否是用普通的RS485通訊線(xiàn)呢還是用PPI的專(zhuān)用通訊電纜呢？，有沒(méi)哪位高手指點(diǎn)下。。。急啊。。。
wjmdtt
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1樓  發(fā)表于: 2010-10-28 16:02
pc與PLC必須用原裝電纜,自由口通信我給你個(gè)資料你看下就明白了.

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