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xujunpeng
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樓主  發(fā)表于: 2017-03-09 20:58
一傳感器發(fā)出脈沖信號
將傳感器與PLC直接連接
可以直接通過(guò)控制器讀出傳感器脈沖頻率值
比如當前頻率值為a，如果頻率值升到b
怎么計算從a升到ｂ所需要的時(shí)間？

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