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楊宇軒
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樓主  發(fā)表于: 2011-10-22 19:22
三菱QJ71C24N R4和三菱FR-E700變頻器通訊的問(wèn)題,請各位高手解答,用GX-WORKS2設置智能模塊和FR-E700通訊,總是出錯,有誰(shuí)用過(guò)的,請幫忙解答,不勝感激。
xcgksp
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1樓  發(fā)表于: 2011-11-30 11:25
1. 變頻器通訊參數設定需要正確(可先用通訊工具測試一下,模擬PLC發(fā)送數據)
2. PLC智能模塊各個(gè)參數也要設定正確(可用串口通訊工具監聽(tīng)發(fā)送的數據是否正常)
3. 檢查PLC程序是否正確
完成以上幾個(gè)步驟,通訊應該不是太大問(wèn)題
aoouang
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2樓  發(fā)表于: 2011-11-30 11:35
同意樓上的說(shuō)法,問(wèn)題主要出在你的通訊設置中
變頻器要設置,PLC的通訊模塊也需要設置
另外PLC的通訊程序要正確,
全部正確的話(huà),不可能通訊不上的,而且都是三菱的產(chǎn)品
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