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fgc536
ＤＣＳ、ＰＬＣ
級別: 論壇先鋒
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樓主  發(fā)表于: 2008-06-04 17:44
計算機向PLC發(fā)送：
始 命令 首地址 位數 終 和校驗
STX CMD GROUP ADDRESS BYTES ETX SUM
例子：從D123開(kāi)始讀取4個(gè)字節數據
02h 30h 31h,30h,46h,36h 30h,34h 03h 37h,34h
地址算法:address=address*2+1000h
再轉換成ASCII
31h,30h,46h,36h


地址算法:address=address*2+1000h
31h,30h,46h,36h 上面的是怎么算出來(lái)的？
請幫幫忙說(shuō)說(shuō)！ 謝謝了。。。
要贏(yíng)別人，先贏(yíng)自己！
jin1315
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1樓  發(fā)表于: 2008-07-05 07:10
學(xué)習 學(xué)習

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