Example: absolute position data: -10 (F6H) 10b Appendix 01b 10 Decimal 11b 11b F FFF6 Hexadecimal 11b 11b 1 1 1 0110 Binary 11b 11b When the binary data of each 2 bits of the absolute position data is added up, "10 1101 b" is obtained. 11b 11b 11b 11b 11b 11b 11b 11b + 101101b Therefore, the checksum of "-10" (absolute position data) is "2DH" 12 12 12.