| G4 | Dwell S<seconds> or P<milliseconds> |
| G10 | S<1 = long retract, 0 = short retract = default> retracts filament according to stored setting |
| G11 | S<1 = long retract, 0 = short retract = default> = Undo retraction according to stored setting |
| G20 | Units for G0/G1 are inches. |
| G21 | Units for G0/G1 are mm. |
| G29 | S<0..2> - Z-Probe at the 3 defined probe points. S = 1 measure avg. zHeight, S = 2 store avg zHeight |
| G30 | P<0..3> - Single z-probe at current position P = 1 first measurement, P = 2 Last measurement P = 0 or 3 first and last measurement |
| G31 | Write signal of probe sensor |
| G32 | S<0..2> P<0..1> - Autolevel print bed. S = 1 measure zLength, S = 2 Measure and store new zLength |
| G90 | Use absolute coordinates |
| G91 | Use relative coordinates |
| G92 | Set current position to coordinates given |
| G131 | set extruder offset position to 0 - needed for calibration with G132 |
| G132 | calibrate endstop positions. Call this, after calling G131 and after centering the extruder holder. |
| G133 | measure steps until max endstops for deltas. Can be used to detect lost steps within tolerances of endstops. |
| G134 | Px Sx Zx - Calibrate nozzle height difference (need z probe in nozzle!) Px = reference extruder, Sx = only measure extrude x against reference, Zx = add to measured z distance for Sx for correction. |
| G201 | P<motorId> X<pos> - Go to position X with motor X |
| G202 | P<motorId> X<setpos> - Mark current position as X |
| G203 | P<motorId> - Report current motor position |
| G204 | P<motorId> S<0/1> - Enable/disable motor |
| M3 | Spindle on, Clockwise or Laser on during G1 moves. |
| M4 | Spindle on, Counterclockwise. |
| M5 | Spindle off, Laser off. |
| M20 | List SD card |
| M21 | Init SD card |
| M22 | Release SD card |
| M23 | Select SD file (M23 filename.g) |
| M24 | Start/resume SD print |
| M25 | Pause SD print |
| M26 | Set SD position in bytes (M26 S12345) |
| M27 | Report SD print status |
| M28 | Start SD write (M28 filename.g) |
| M29 | Stop SD write |
| M30 | <filename> Delete file on sd card |
| M32 | <dirname> create subdirectory |
| M42 | P<pin number> S<value 0..255> - Change output of pin P to S. Does not work on most important pins |
| M80 | Turn on power supply |
| M81 | Turn off power supply |
| M82 | Set E codes absolute (default) |
| M83 | Set E codes relative while in Absolute Coordinates (G90) mode |
| M84 | Disable steppers until next move, or use S<seconds> to specify an inactivity timeout, after which the steppers will be disabled. S0 to disable the timeout |
| M85 | Set inactivity shutdown timer with parameter S<seconds>. To disable set zero (default) |
| M92 | Set axisStepsPerMM - same syntax as G92 |
| M99 | S<delayInSec> X0 Y0 Z0 - Disable motors for S seconds (default 10) for given axis |
| M104 | S<temp> T<extruder> P1 F1 - Set temperature without wait. P1 = wait for moves to finish, F1 = beep when temp. reached first time |
| M105 | X0 - Get temperatures. If X0 is added, the raw analog values are also written |
| M109 | Wait for extruder current temp to reach target temp. |
| M114 | S1 - Display current position, S1 = also write position in steps |
| M112 | Emergency kill |
| M116 | Wait for all temperatures in a +/- 1 degree range |
| M117 | <message> Write message in status row on lcd |
| M140 | S<temp> F1 - Set bed target temp, F1 makes a beep when temperature is reached the first time |
| M163 | S<extruderNum> P<weight> - Set weight for this mixing extruder drive |
| M164 | S<virtNum> P<0 = dont store eeprom,1 = store to eeprom> - Store weights as virtual extruder S |
| M190 | Wait for bed current temp to reach target temp |
| M200 | T<extruder> D<diameter> - Use volumetric extrusion. Set D0 or omit D to disable volumetric extr. Omit T for current extruder |
| M201 | Set max acceleration in units/s2 for print moves (M201 X1000 Y1000) |
| M202 | Set max acceleration in units/s2 for travel moves (M202 X1000 Y1000) |
| M203 | Set temperature monitor to Sx |
| M204 | Set PID parameter X ⇒ Kp Y ⇒ Ki Z ⇒ Kd S<extruder> Default is current extruder. NUM_EXTRUDER=Heated bed |
| M207 | X<XY jerk> Z<Z Jerk> E<ExtruderJerk> - Changes current jerk values, but do not store them in eeprom |
| M209 | S<0/1> Enable/disable autoretraction |
| M220 | S<Feedrate multiplier in percent> - Increase/decrease given feedrate |
| M221 | S<Extrusion flow multiplier in percent> - Increase/decrease given flow rate |
| M226 | P<pin> S<state 0/1> - Wait for pin getting state S. Add X0 to init as input without pullup and X1 for input with pullup |
| M231 | S<OPS_MODE> X<Min_Distance> Y<Retract> Z<Backlash> F<ReatrctMove> - Set OPS parameter |
| M232 | Read and reset max. advance values |
| M233 | X<AdvanceK> Y<AdvanceL> Set temporary advance K-value to X and linear term advanceL to Y |
| M251 | Measure Z steps from homing stop (Delta printers). S0 - Reset, S1 - Print, S2 - Store to Z length (also EEPROM if enabled) |
| M280 | S<mode> - Set ditto printing mode. mode: 0 = off, 1 = 1 extra extruder, 2 = 2 extra extruder, 3 = 3 extra extruders |
| M281 | Test if watchdog is running and working. Use M281 X0 to disable watchdog on AVR boards. Sometimes needed for boards with old bootloaders to allow reflashing. |
| M300 | S<Frequency> P<DurationMillis> play frequency |
| M302 | S<0 or 1> - allow cold extrusion. Without S parameter it will allow. S1 will disallow. |
| M320 | S<0/1> - Activate autolevel, S1 stores it in eeprom |
| M321 | S<0/1> - Deactivate autolevel, S1 stores it in eeprom |
| M322 | Reset autolevel matrix |
| M323 | S0/S1 enable disable distortion correction P0 = not permanent, P1 = permanent = default |
| M340 | P<servoId> S<pulseInUS> R<autoOffIn ms>: servoID = 0..3, Servos are controlled by a pulse with normally between 500 and 2500 with 1500ms in center position. 0 turns servo off. R allows automatic disabling after a while. |
| M350 | S<mstepsAll> X<mstepsX> Y<mstepsY> Z<mstepsZ> E<mstepsE0> P<mstespE1> : Set microstepping on RAMBO board |
| M355 | S<0/1> - Turn case light on/off, no S = report status |
| M360 | show configuration |
| M400 | Wait until move buffers empty |
| M401 | Store x, y and z position. |
| M402 | Go to stored position. If X, Y or Z is specified, only these coordinates are used. F changes feedrate for that move. |
| M408 | S<0-5> - Return status as json string (requires matching feature) for PanelDue |
| M450 | Reports printer mode |
| M451 | Set printer mode to FFF |
| M452 | Set printer mode to laser |
| M453 | Set printer mode to CNC |
| M460 | X<minTemp> Y<maxTemp> : Set temperature range for thermistor controlled fan |
| M500 | Store settings to EEPROM |
| M501 | Load settings from EEPROM |
| M502 | Reset settings to the one in configuration.h. Does not store values in EEPROM! |
| M513 | Clear all jam marker. |
| M600 | Change filament |
| M601 | S<1/0> - Pause extruders. Paused extrudes disable heaters and motor. Unpausing reheats extruder to old temp. |
| M602 | S<1/0> P<1/0>- Debug jam control (S) Disable jam control (P). If enabled it will log signal changes and will not trigger jam errors! |
| M603 | Simulate a jam |
| M604 | X<slowdownSteps> Y<errorSteps> Z<slowdownTo> T<extruderId> - Set jam detection values on a per extruder basis. If not set it uses defaults from Configuration.h |
| M908 | P<address> S<value> : Set stepper current for digipot (RAMBO board) |
| M999 | Continue from fatal error. M999 S1 will create a fatal error for testing. |