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          求助各位高手，F(xiàn)X3U編程口被觸摸屏占用了，想監(jiān)控程序每次都拔編程口換來(lái)?yè)Q去，不方便，用觸摸屏穿透監(jiān)控反應(yīng)很慢，我買(mǎi)了一塊FX3U232 BD通信板監(jiān)控程序，電腦用USB轉(zhuǎn)232 端口已驅(qū)動(dòng)好，硬件接線    2接3       3接2      5接5       問(wèn)題是怎么樣都通信不上，求助大家指點(diǎn)
                                                                                                                                                                                                                                謝謝！

講下原理:  通訊232  422   擴(kuò)展板在不指定D8120 D8400 D8420(另參數(shù)設(shè)置通訊參數(shù)里沒(méi)有勾選)的情況下,是默認(rèn)跟計(jì)算機(jī)通訊的格式!就可以直接連電腦!注:改變通訊格式后要斷電重啟下!