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foxplc
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樓主  發(fā)表于: 2008-08-20 11:24
變頻器的啟動(dòng)是通過(guò)上位機界面的啟動(dòng)按鈕實(shí)現的.啟動(dòng)按鈕點(diǎn)擊后,控制變頻電機的風(fēng)扇的接觸器吸合,其一對常開(kāi)點(diǎn)接入

變頻器二次端子的正轉端子,變頻器設為外部端子啟動(dòng).為什么點(diǎn)擊啟動(dòng)后,PLC和上位機通訊中斷?以前可正常啟動(dòng),通訊也

正常.
cvlsam
富士低壓，POD（觸摸屏），PLC專(zhuān)賣(mài)
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1樓  發(fā)表于: 2008-08-20 11:51
看不懂哎……

您最好畫(huà)一張圖，表明一下您的項目怎么鏈接的。

在通訊方面屏蔽做的怎么樣？

以上～～～

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