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jixuduoluo
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樓主  發(fā)表于: 2011-07-16 20:24
想請教一下各位高手，三菱PLC Modbus rtu通信時(shí)采用CRC校驗方式，但是在寫(xiě)入D8120通信格式時(shí)選擇校驗方式怎么選用？是選無(wú)，還是偶校驗，或者奇校驗？小弟不才還望各位高手指點(diǎn)一下
szwxjd
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1樓  發(fā)表于: 2011-09-27 10:12
發(fā)送：  站號——地址——數據起始位——數據量（個(gè)數）——CRC高位——CRC低位
返回：  站號——地址——數據量（個(gè)數）——數據（具體數數）——CRC高位——CRC低位

注意返回后的數據是：ASCII碼。需要轉換成16進(jìn)制常數才能正常識別。

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