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liushaopeng
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樓主  發(fā)表于: 2018-04-10 10:32
我個(gè)人理解：工業(yè)通訊一般物理層介質(zhì)有4類(lèi)，1、rs232 。  2、rs485。 3、以太網(wǎng) 。4、還有一些無(wú)線(xiàn)通訊類(lèi)的。通訊協(xié)議有：EtherCAT、EtherNet/IP、ProfiNet、Modbus-TCP、Modbus asc/rtu、Powerlink、cclink等，不知道我理解的對不對？我總感覺(jué)哪有問(wèn)題......

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