MODBUS RTU通信协议 CRC16校验
时间: 2023-08-01 11:08:28 浏览: 621
MODBUS RTU通信协议使用CRC16校验来确保数据的完整性和准确性。CRC校验码是一个2个字节(16位二进制)的数,由发送设备计算并放置于所发送信息帧的尾部。接收设备在接收到数据后重新计算CRC校验码,并与接收到的CRC校验码进行比较,以判断数据是否出错。如果两者不相符,则认为数据传输过程中出错,并给出错误应答。CRC16校验算法是通过将每个数据与CRC寄存器进行异或运算,并根据特定的多项式进行位移和异或操作来计算CRC校验码。\[1\]\[2\]\[3\]
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