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liuqiang2012
慎言慎行,三思而后行!
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樓主  發(fā)表于: 2018-05-16 18:32
關(guān)于PC與三菱FX3U走RS485接口讀PLC端D寄存器數據的波特率為什么只能設置成19200,而且還不穩定。。。不曉得是不是我程序寫(xiě)的有問(wèn)題。但是OMRON CP1E的波特率設置成38400都沒(méi)問(wèn)題而且還很穩定(都是同時(shí)抓20個(gè)D區數據),有沒(méi)有哪位大俠有好的辦法。
搞工控不自學(xué)不行,因為你一天不學(xué)你就落后了,這就是這個(gè)行業(yè)的特點(diǎn)
2003922
相互學(xué)習、共同進(jìn)步
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1樓  發(fā)表于: 2018-05-24 15:51
三菱有PC對PLC專(zhuān)用通訊協(xié)議,計算機鏈接功能,按著(zhù)報文格式寫(xiě)一點(diǎn)問(wèn)題都沒(méi)有。另外波特率越高傳輸速度越快,同時(shí)抗感染越差,不過(guò)你的問(wèn)題我認為是讀取頻率快的時(shí)候通訊周期和通訊程序銜接有問(wèn)題。還使用計算機鏈接功能為好。

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