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sznczj
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樓主  發(fā)表于: 2016-05-17 22:10
用掃描儀連接觸摸屏或掃描已連接PLC串口模塊，這兩種連接下掃描儀如果連續掃描兩次或多次，

觸摸屏或者PLC都會(huì )接受到兩次數據（后面掃描不是覆蓋前面的而是和接龍一樣接在前面的數據后面）

這中情況怎么辦？是掃描儀需要設置還是觸摸屏PLC需要設置呢？

高手指點(diǎn)
QQ1300290132

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