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樓主  發(fā)表于: 2012-01-05 16:31
Q系列的 以太網(wǎng)培訓資料   CC-LINK資料  melsecnet/H  都有看過(guò)  但是就是沒(méi)辦法建立起一個(gè)具體的概念，他們具體區別是什么  又在整個(gè)系統中起到什么樣的作用啊~~~~又沒(méi)什么更容易理解的方法~~~
比如說(shuō)  感覺(jué) PLC 和上位機通訊的方式很多啊~~~   上述的  貌似都行~~~~
   希望各位大俠 能講講~~

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