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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
QQ  296686949
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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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