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樓主  發(fā)表于: 2019-10-16 20:46
圖片：
圖片：
如圖：本人在學(xué)習順序通訊，
用的是三菱Q00J的CPU，QJ71C24N通訊模塊與三菱E700變頻器進(jìn)行485無(wú)順序協(xié)議通訊
當用G.OUTPUT指令向變頻器發(fā)送運行指令時(shí)，變頻器會(huì )正轉，反轉和停止，QJ71上的485通道，RD和SD指示燈都會(huì )閃爍一下，
不過(guò)程序梯形圖中的G.INPUT指令毫無(wú)反應，D60-D69中也沒(méi)有任何數據！
（然而用串口助手查看了一下，不管正反轉，還是監視頻率時(shí)都會(huì )有代碼反饋回來(lái)）
感覺(jué)接收指令沒(méi)有啟動(dòng)！
有沒(méi)有通訊高手，麻煩指點(diǎn)一下，小弟萬(wàn)分感謝！
[ 此帖被沒(méi)有錢(qián)爺裝逼在2019-10-16 21:02重新編輯 ]

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