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manning
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樓主  發(fā)表于: 2017-08-10 14:49
小弟在做QJ71C24N用422方式和AD-4401A稱(chēng)重儀表走無(wú)協(xié)議通訊時(shí)，遇到一個(gè)問(wèn)題，還請各位大神指教指教小弟
儀表接收的報文格式是@01RW，停止符可選擇CR和CR LF這兩種，當只用CR作為停止符時(shí)是可以通訊上，并讀到正確的數據，如圖

但是數據會(huì )在地址區內循環(huán)變化，是因為沒(méi)有LF這個(gè)換行指令，但是停止符選CR LF時(shí)就讀不到數據。
小弟我反復試了下，個(gè)人覺(jué)得應該是停止符CR LF不是在同一個(gè)地址區內造成無(wú)法讀取的，如圖

如果真如我所猜想的這樣，那么問(wèn)題來(lái)了，如圖
tanktang
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1樓  發(fā)表于: 2017-09-30 13:48
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