flexi-bot/docs/marlin/_gcode/M412.md

tag	title	brief	author	requires	since	group	codes	notes	parameters	examples
m0412	Filament Runout	Get/set filament runout detection parameters	thinkyhead	FILAMENT_RUNOUT_SENSOR	2.0.0	control	M412	Requires `FILAMENT_RUNOUT_SENSOR`. Parameter `D` requires `FILAMENT_RUNOUT_DISTANCE_MM`. Parameter `H` requires `HOST_ACTION_COMMANDS`.	tag optional description values D true Set the filament runout distance. type tag float linear tag optional description values H true Flag to enable or disable host handling of a filament runout. type bool tag optional description values S true Flag to enable or disable Filament Runout Detection. If omitted, the current enabled state will be reported. type bool tag optional description values R true Flag to reset the filament runout sensor. Not needed with `S`. type bool	pre code Enable (and reset) filament runout detection M412 S1 pre code Disable filament runout detection M412 S0 pre code Report filament runout state M412 Filament runout ON pre code Set filament runout distance M412 D35 ; requires FILAMENT_RUNOUT_DISTANCE_MM M412 Filament runout ON Filament runout distance (mm): 35

Get or set filament runout status and distance. Omit all parameters to get a report of the current stats. Enable or disable filament runout detection with S and set distance with D. When filament sensors are enabled, Marlin will respond to a filament runout by running the configured G-code (usually M600 Filament Change). When filament runout detection is disabled, Marlin will take no action for filament runout.