Below are the following G and M codes supported by SMNC:
| Codes | Description |
| G0 | Rapid Linear movemen |
| G1 | Normal Linear movement |
| G2 | Clockwise circular movement |
| G3 | Counter-Clockwise circular movement |
| G4 | Wait |
| G17 | Select the X-Y plane for circular movements |
| G18 | Select the X-Z plane for circular movements |
| G19 | Select the Y-Z plane for circular movements |
| G20 | Change units to inch |
| G21 | Change units to Millimeter |
| G28 | Return to the 1st Reference point |
| G30 | Return to the 2nd Reference point |
| G40 | Cancel cutter compensation |
| G41 | Start cutter compensation left |
| G42 | Start cutter compensation right |
| G43 | Start tool length compensation |
| G49 | Cancel tool length compensation |
| G54 | Use preset coordinate system 1 |
| G55 | Use preset coordinate system 2 |
| G56 | Use preset coordinate system 3 |
| G57 | Use preset coordinate system 4 |
| G58 | Use preset coordinate system 5 |
| G59 | Use preset coordinate system 6 |
| G80 | Cancel Modal Motion (Used with canned cycles) |
| G81 | Canned cycle: drilling |
| G82 | Canned cycle: drilling with dwell |
| Codes | Description |
| G83 | Canned cycle: peck drilling |
| G85 | Canned cycle: boring, no dwell, feed out |
| G89 | Canned cycle: boring dwell feed out |
| G90 | Change coordinate system to absolute |
| G91 | Change coordinate system to incremental |
| G92 | Change the logical origin |
| G98 | Initial level return mode in Canned cycle |
| G99 | Retract-point level return mode in Canned cycle |
| G101 | Move the rotary axis |
| D | Change the tool index for cutter compensation (G40, G41, G42) |
| F | Change the Feedrate (Normal Speed) |
| H | Change the tool index for tool length compensation (G43, G49) |
| S | Change the Spindle Speed |
| T | Current tool index (M6) |
| M0 | Pause |
| M1 | Optional Stop |
| M2 | End of program |
| M3 | Turn on Spindle Clockwise |
| M4 | Turn on Spindle Counterclockwise |
| M5 | Turn off Spindle |
| M6 | Change current Tool |
| M8 | Turn on the Coolant |
| M9 | Turn off the Coolant |
| M30 | End of program and force turning off all of digital outputs |
| M98 | Call Subroutine |
| M99 | End the program and restart it |
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