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2018工控狗
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樓主  發(fā)表于: 2018-12-10 10:46
臺達PLC跟兩臺稱(chēng)重儀表通訊,通訊一段時(shí)間后,其中一個(gè)表就讀不上來(lái)了。用的modubls 485通訊。請教下為什么,波特率設置低一點(diǎn)的話(huà),PLC讀儀表稱(chēng)重數據也會(huì )掉線(xiàn),就是沒(méi)那么快掉線(xiàn)
xhilyxhily
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1樓  發(fā)表于: 2018-12-10 11:40
討論討論:
      在臺達plc編程正確的情況下,可以咨詢(xún)下儀表廠(chǎng)家,看用的是什么modbus參數,比如波特率、奇偶校驗位等等;另外,有的時(shí)候儀表廠(chǎng)家不支持標準modbus協(xié)議;實(shí)在沒(méi)辦法了,自己可以監聽(tīng)一下儀表的數據,修改合適的modbus參數,看什么時(shí)候是正常的;

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