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15920589444
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樓主  發(fā)表于: 2012-11-07 23:42
怎么讓PLC通過(guò)串口向儀表發(fā)送FE FE FE 01 00 00 00 C0 19 AA讀取指令，然后再接收儀表送回的數據
儀表數據位八位，無(wú) ，1位停止位，9600
最好有個(gè)梯形圖
[ 此帖被15920589444在2012-11-20 22:49重新編輯 ]
sss6491
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1樓  發(fā)表于: 2012-11-08 13:38
儀表的協(xié)議好像是modbus  ascii  看命令像 2樓的辦法對

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