MODBUS RTU通信校验码的代码：

WORD GetCheckCode(const char * pSendBuf, int nEnd){WORD wCrc = WORD(0xFFFF);for(int i=0; i<nEnd; i++){wCrc ^= WORD(BYTE(pSendBuf[i]));for(int j=0; j<8; j++){if(wCrc & 1){wCrc >>= 1; wCrc ^= 0xA001; }else{wCrc >>= 1; }}}return wCrc;}

WORD CRCCode = GetCheckCode((char*)szSend,6);byte Code[2] = {0};memcpy(Code,&CRCCode,sizeof(Code));