# LinuxCNC M0

Instructions · `M0` · verification: source checked

M0 is a G-code M instruction in LinuxCNC that pauses a running program temporarily. The controller remains in Auto Mode, so MDI and other manual actions are not enabled. Pressing the resume button restarts the program at the following line.

## Specification

| Property | Value |
|---|---|
| Language | gcode |
| Code | M0 |
| Group | Program Pause |
| Dialect | LinuxCNC |

## Safety

- M0 keeps LinuxCNC in Auto Mode, so MDI and other manual actions are not enabled while the program is paused.

## Study notes

- The document permits programming M0 in MDI mode, but notes the effect will probably not be noticeable because normal MDI behavior is to stop after each line of input.

## Sources

1. [M-Codes](https://linuxcnc.org/docs/html/gcode/m-code.html#mcode:m0-m1) (accessed 2026-10-26)

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Source page: https://machineschema.com/instruction/mcode-m00  
JSON: https://machineschema.com/instruction/mcode-m00.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.