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a86116403
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樓主  發(fā)表于: 2017-12-23 08:41
我用MODBUS主站/RTU模式，ADPRW指令指定了   從站站號   功能碼    從站地址  數據   校驗碼    ，我發(fā)現沒(méi)有指定用哪個(gè)口發(fā)送啊，我現在通道1和通道2通訊參數一模一樣，我要發(fā)送一串數據幀，如何分別指定1通道還是2通道。說(shuō)明書(shū)我看過(guò)了，沒(méi) 有講，或者我下錯了。官網(wǎng)上下的

說(shuō)明書(shū)上的例子，通訊參數設定完后直接用ADPRW指令，沒(méi)有任何指定通道的程序  
焦劉吉
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1樓  發(fā)表于: 2017-12-23 09:17
看你通信格式字，通道格式子
樓主留言：
你沒(méi)理解我的意思  我現在可以吧通道2的參數也寫(xiě)上去，但是是我用通道1發(fā)數據不用通道2怎么編
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