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xingyun123
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樓主  發(fā)表于: 2016-10-18 20:53
各位大神，有沒(méi)有誰(shuí)做過(guò)西門(mén)子S7-200PLC主從通信的項目？
請問(wèn)兩臺PLC之間用什么電纜相連？用PROFIBUS紫色電纜可以嗎？對端口有沒(méi)有什么要求？
主站PLC與PC機相連的電纜是用485PC/PPI可編程電纜嗎？
為什么我這樣連接之后通信時(shí)無(wú)法搜到兩臺PLC，只能搜到PC機和485總線(xiàn)直接相連的那一臺PLC
xingyun123
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1樓  發(fā)表于: 2016-10-18 20:55
求助   
這一塊已經(jīng)拖了好久了。。。

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