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leslie1994
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樓主  發(fā)表于: 2016-04-12 17:46
PLC控制變頻器有三種方式：1、開(kāi)關(guān)量 2、模擬量 3、RS485通訊方式
開(kāi)關(guān)量就不用說(shuō)了 。
如果要求頻率能實(shí)時(shí)改變的（收卷場(chǎng)合），要用模擬量的方式比較好還是通訊呢？
大家說(shuō)說(shuō)。
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lcllx
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1樓  發(fā)表于: 2016-04-18 15:35
必須是模擬量      通訊折騰死人，后期維護麻煩。還總丟包···· 各種糾結

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