https://www.lammertbies.nl/comm/info/crc-calculation?crc=8005&method=hex#intr On-line CRC calculation and free library - Lammert Bies On-line CRC calculation sheet. Free CRC routines downloadable. Covers CRC-16, CRC-32, CRC-CCITT, DNP, Sick and other routines. www.lammertbies.nl 아래 표시창에 hex값을 넣고 calcurate CRC를 누르니... 계산이 잘되네... 01 10 40 78 00 02 d4 11 (맨뒤가 CRC데이타임) CRC-16(Modbus) 0x11D4 로 ok!!