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dthujin
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樓主  發(fā)表于: 2011-07-25 20:49
為什么我用 監控中的 485 轉232 連接到西門(mén)子PLC 上不能通信顯示：網(wǎng)絡(luò )上存在主站，當前設備不支持主站。請選擇一個(gè)多主站設備在重新嘗試。
     當我拔掉PLC顯示；你必須使用（RS232/USB）PPI多主站電纜在多主站或高級PPI網(wǎng)絡(luò )上通信。
匯榮鋁業(yè)
級別: 網(wǎng)絡(luò )英雄

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1樓  發(fā)表于: 2011-07-28 06:47
都提示你網(wǎng)絡(luò )中存在主站了，那就得用PPI通訊或485通訊，你轉那個(gè)232干什么用呢？ 
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