Currently trying to essentially reverse engineer a file format that is produced by a CNC machine when backing up programs on the machine so that i can read the programs on a standard PC. Have opened a few of the backup files created and can clearly see patterns of data such as the program name etc. which can be clearly seen in plaintext form. One thing i am struggling with is how numbers are represented in this.
for Example: the number '20' is represented in this file in hex form as '40 0D 03 00'.
More examples:
"-213.6287": "21 67 DF FF"
"-500.3366": "9A A7 B3 FF"
Any help with trying to figure out how these hex values make up those numbers?
Thanks
These numbers are stored as little-endian signed integers, as a count of ten-thousandths.
for Example: the number '20' is represented in this file in hex form as '40 0D 03 00'.
0x00030d40 = 200000.
"-213.6287": "21 67 DF FF"
0xffdf6721 = -2136287.
"-500.3366": "9A A7 B3 FF"
0xffb3a79a = -5003366.