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xuyaoping606
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樓主  發(fā)表于: 2018-02-27 17:08
各路大神!你們好!情況是這樣的,我用FX1N40MT跟儀表通訊,用485DP,線(xiàn)路連接好,剛開(kāi)始上電,先寫(xiě)發(fā)送數據,把M8122置位1,啟動(dòng)RS程序,數據發(fā)送接收正常,M8123置位位1后自動(dòng)復位為0(此疑問(wèn)不是說(shuō)結束標識需要手動(dòng)復位嗎)?當在此想把M8122置位時(shí),發(fā)現M8122無(wú)法置位1,數據無(wú)法發(fā)送。。!具體是什么問(wèn)題一直都不明白,嘗試過(guò)其他也不行,就是M8122無(wú)法置位1,除非斷電后重新上電才可以,但是只能置位1次!看各路大神是否碰到過(guò)以上問(wèn)題!坐等求解!
gzcjx555
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1樓  發(fā)表于: 2018-02-27 19:24
把RS指令使用M8000一直接通,然后使用X1上升沿傳輸數據和置位M8122。
聯(lián)系電話(huà)15071699246,QQ296686949

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