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jackeywan
級別: 略有小成
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樓主  發(fā)表于: 2015-01-21 19:55
各位高手，您們好！

我對西門(mén)子PLC方面不是很了解,看了下朋友發(fā)的程序，有些地方不了解。

為什么輸出線(xiàn)圈中有R,S，而有些又沒(méi)有？
請看下列圖片，并請指點(diǎn)。
感謝不盡。 [attachment=131604]
[attachment=131605]
[attachment=131606]  
要求自己每天多學(xué)習一點(diǎn).
lijiqiang
級別: 探索解密
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1樓  發(fā)表于: 2015-01-22 11:26
看手冊吧，基本掌握的知識，不要什么都問(wèn)，往往溫度問(wèn)題都是最簡(jiǎn)單的，想成為一名工程師，要有踏實(shí)的研究精神。

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