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lucaslu
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樓主  發(fā)表于: 2011-02-22 11:42
    求助：s7-300與一臺變頻器建立Profibus通信，如何編程，如何設置才能確定通信周期？
zzllyp
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1樓  發(fā)表于: 2011-02-22 14:38
應該是波特率吧，可根據你的通訊電纜長(cháng)度進(jìn)行設定，電纜長(cháng)設的小一點(diǎn)，電纜短可設定大一點(diǎn)，一般有9600，19200等

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