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l83438797
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樓主  發(fā)表于: 2021-11-23 20:51
從FX5U的通訊協(xié)議，到FX5U的MODBUS協(xié)議，到FX3U-485-ADP模塊的MODEBUS，現在遇到FX3U-485-BD小板了。
之前的部分已經(jīng)做過(guò)，通訊協(xié)議需要設置協(xié)議地址，然后通訊協(xié)議可直接獲取地址發(fā)送或接收。
FX5U的MODBUS用ADWPR指令也是一條指令搞定的事。
FX3U-485-ADP可以用ADWPR指令，但是要寫(xiě)一小段定義程序
那這個(gè)FX3U-485-BD小板不知道能不能用ADWPR指令？是需要全部整理出地址，甚至還要列出校驗碼的算法程序么？
tangjiezyc
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1樓  發(fā)表于: 2021-11-24 11:22
我也是先用的485ADP學(xué)的  后來(lái)3U 485BD板（這個(gè)板有便利的專(zhuān)用指令I(lǐng)VDR IVCK等）  再來(lái)2N 485的BD板就有點(diǎn)古板了...
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