当信息被发送，接收装置对所有的数据位和发送CRC执行相同的CRC操作，。如果信息准确被接收，余数(CRC)为0.CRC计算举例RTU设备首先发送最右边的字节(寄存器的或离散数据的)。发送CRC-16的第一位是MSB.因此，例中CRC多项式的MSB在最右边。
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