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wangkeming07
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樓主  發(fā)表于: 2017-04-17 13:45
是這樣的如上圖所示，現在的問(wèn)題是我程序中，和PLC指示燈，都顯示Y2是失電的狀態(tài) 。但是實(shí)際上我Y2上接的燈泡確實(shí)亮的。

我有懷疑我電路接錯了。是不是類(lèi)似電路需要加中間繼電器才能起到有效的控制。

xuyaoping606
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1樓  發(fā)表于: 2017-04-17 14:05
接法有誤吧！公共端接負24V

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