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樓主  發(fā)表于: 2024-04-22 11:31
一臺SMART 700IE V3精智屏使用485通訊S7-200PLC,有時(shí)能通訊正常,正常使用一天,有時(shí)又無(wú)法通訊,485通訊芯片是否會(huì )出現這種情況?
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1樓  發(fā)表于: 2024-04-23 15:19
就是很奇怪的,通訊有時(shí)正常,觸摸屏返回的數據是0,或設置值,通訊不行時(shí),數據變成###
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2樓  發(fā)表于: 2024-04-28 08:41
更換西門(mén)子S7-2002片485通訊芯片,還是不正常,后更換SMART觸摸屏485通訊芯片后,正常使用無(wú)異常,可能是原SMART觸摸屏主板上的通訊芯片通訊芯片輸出晶體管能力較差,有時(shí)會(huì )出現通訊異,F象

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