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修緣168
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樓主  發(fā)表于: 2015-04-21 20:27
PLC中晶體管和繼電器輸出，各有那些優(yōu)缺點(diǎn)？那種更具有優(yōu)勢？有人說(shuō)晶體管比繼電器好壞，是真的嗎？
zhtokokk
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1樓  發(fā)表于: 2015-04-27 15:42
      三菱的繼電器壽命一般只有幾十萬(wàn)次，晶體管的可能永久的。

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