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溫柔的郎
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樓主  發(fā)表于: 2025-02-04 20:38
各位大神好，
      問(wèn)個(gè)問(wèn)題，FX3U PLC可否同時(shí)做Modbus RTU主從站？
     設備在現場(chǎng)用FX3U PLC做控制，PLC與現場(chǎng)變頻器做Modbus RTU通信時(shí)，PLC需要做U主站，但PLC與中控做Modbus RTU通信時(shí)，PLC就需要做從站，
     這種應用在工控現場(chǎng)非常普遍，
     不知道如何來(lái)做，請有知道的大神指點(diǎn)指點(diǎn)，感謝��！
崇慶陽(yáng)光
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1樓  發(fā)表于: 2025-02-06 09:11
引用
引用第2樓溫柔的郎于2025-02-05 15:55發(fā)表的  :
485能到1200米，TCP就60米，而且需要用485啊

TCP可以用光纖啊
不懈努力,一切皆有可能 ...

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