Table 1: G-Codes
| Code | Function |
|---|---|
| G00 | Positioning at rapid travel |
| G01 | Linear interpolation using a feed rate |
| G02 | Circular interpolation (CW) |
| G03 | Circular interpolation (CCW) |
| G04 | Dwell |
| G09 | Exact stop |
| G10 | Data setting |
| G17 | Select $X-Y$ plane |
| G18 | Select $Z-X$ plane |
| G19 | Select $Z-Y$ plane |
| G20 | Imperial units (inches) |
| G21 | Metric units (millimeter) |
| G22 | Stored stroke limit setting |
| G23 | Stored stroke limit cancel |
| G27 | Reference point return check |
| G28 | Return to reference point |
| G29 | Return from reference point |
| G30 | 2nd, 3rd, or 4th reference point return |
| G30.1 | Floating reference point return |
| G31 | Skip/probe function |
| G40 | Cancel cutter compensation |
| G41 | Cutter compensation left |
| G42 | Cutter compensation right |
| G43 | Tool length compensation $(+)$ |
| G44 | Tool length compensation $(-)$ |
| G45 | Tool position offset increase |
| G46 | Tool position offset decrease |
| G47 | Tool position offset double increase |
| G48 | Tool position offset double decrease |
| G49 | Tool length compensation cancel |
| G50 | Reset all scale factors to 1.0 |
| G51 | Set axis data input scale factors |
| G50.1 | Programmable mirror image cancel |
| G51.1 | Programmable mirror image |
| G52 | Local coordinate system setting |
| G53 | Machine coordinate system setting |
| G54 | Work coordinate system 1 selection |
| G55 | Work coordinate system 2 selection |
| G56 | Work coordinate system 3 selection |
| G57 | Work coordinate system 4 selection |
| G58 | Work coordinate system 5 selection |
| G59 | Work coordinate system 6 selection |
| G60 | Single direction positioning |
| G61 | Exact stop mode |
| G62 | Automatic corner overide |
| G63 | Tapping mode |
| G64 | Cutting mode |
| G65 | Macro call |
| G66 | Macro modal call |
| G67 | Macro modal call cancel |
| G68 | Coordinate rotation |
| G69 | Coordinate rotation cancel |
| G72.1 | Rotation copy |
| G72.2 | Parallel copy |
| G73 | Pattern Repeating Cycle |
| G74 | Left hand tapping Mill |
| G74 | Face grooving cycle |
| G76 | Fine boring cycle |
| G80 | Cancel cycles |
| G81 | Drill cycle |
| G82 | Drill cycle with dwell |
| G83 | Peck drilling cycle |
| G84 | Tapping cycle |
| G84.2 | Rigid tapping cycle |
| G84.3 | Rigid counter tapping cycle |
| G85 | Boring cylce |
| G86 | Boring cycle (spindle stop, rapid out) |
| G87 | Backboring cycle |
| G88 | Boring cycle (manual return) |
| G89 | Boring cycle (with dwell) |
| G90 | Absolute programming |
| G91 | Incremental programming |
| G92 | Alternation of work-coordinate system |
| G92.1 | Work coordinate preset |
| G98 | Canned cycle initial point return |
| G99 | Canned cycle reference point return |
Table 2. Commonly used M-codes
| Code | Function |
|---|---|
| M0 | Program stop |
| M1 | Optional stop |
| M2 | End of program |
| M3 | Spindle CW start |
| M4 | Spindle CCW start |
| M5 | Spindle stop |
| M6 | Automatic tool change |
| M7 | Mist coolant on |
| M8 | Flood coolant on |
| M9 | Coolant off |
| M10 | 4th axis clamp |
| M11 | 4th axis unclamp |
| M12 | 5th axis clamp |
| M13 | 5th axis unclamp |
| M19 | Spindle orientation stop |
| M30 | End of program and rewind |