I do not know, but I know much about G Code; CNC machine with PCB drilling process used in the measure to be drilled where the coordinates of a file that some PCB drawing programs “export” menu has this option probably like I do not know much, but the “G Code Excellon” CNC jobs of those involved with to help business a free program ..
Excellon files will be converted to DIN G-code
Resizing and moving geometric data
Customize the number format
G00/g01-kommandos or drilling cycle
G79/G81 and production parameters or
Line numbers automatically be
Akkondesk creation tool definition files
Source: burger-web.com alternative link: g-code-converter-program.rar
Previous project PIC18F4520 Unipolar Stepper Motor Driver Circuit suggest reading the article. microchip projects provided information about the.