klipper-dgus/docs/G-Codes.md

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This document describes the commands that Klipper supports. These are
commands that one may enter into the OctoPrint terminal tab.
# G-Code commands
Klipper supports the following standard G-Code commands:
- Move (G0 or G1): `G1 [X<pos>] [Y<pos>] [Z<pos>] [E<pos>] [F<speed>]`
- Dwell: `G4 P<milliseconds>`
- Move to origin: `G28 [X] [Y] [Z]`
- Turn off motors: `M18` or `M84`
- Wait for current moves to finish: `M400`
- Select tool: `T<index>`
- Use absolute/relative distances for extrusion: `M82`, `M83`
- Use absolute/relative coordinates: `G90`, `G91`
- Set position: `G92 [X<pos>] [Y<pos>] [Z<pos>] [E<pos>]`
- Set speed factor override percentage: `M220 S<percent>`
- Set extrude factor override percentage: `M221 S<percent>`
- Get extruder temperature: `M105`
- Set extruder temperature: `M104 [T<index>] [S<temperature>]`
- Set extruder temperature and wait: `M109 [T<index>] S<temperature>`
- Set bed temperature: `M140 [S<temperature>]`
- Set bed temperature and wait: `M190 S<temperature>`
- Set fan speed: `M106 S<value>`
- Turn fan off: `M107`
- Emergency stop: `M112`
- Get current position: `M114`
- Get firmware version: `M115`
For further details on the above commands see the
[RepRap G-Code documentation](http://reprap.org/wiki/G-code).
Klipper's goal is to support the G-Code commands produced by common
3rd party software (eg, OctoPrint, Printrun, Slic3r, Cura, etc.) in
their standard configurations. It is not a goal to support every
possible G-Code command. Instead, Klipper prefers human readable
["extended G-Code commands"](#extended-g-code-commands).
## G-Code SD card commands
Klipper also supports the following standard G-Code commands if the
"virtual_sdcard" config section is enabled:
- List SD card: `M20`
- Initialize SD card: `M21`
- Select SD file: `M23 <filename>`
- Start/resume SD print: `M24`
- Pause SD print: `M25`
- Set SD position: `M26 S<offset>`
- Report SD print status: `M27`
# Extended G-Code Commands
Klipper uses "extended" G-Code commands for general configuration and
status. These extended commands all follow a similar format - they
start with a command name and may be followed by one or more
parameters. For example: `SET_SERVO SERVO=myservo ANGLE=5.3`. In this
document, the commands and parameters are shown in uppercase, however
they are not case sensitive. (So, "SET_SERVO" and "set_servo" both run
the same command.)
The following standard commands are supported:
- `QUERY_ENDSTOPS`: Probe the axis endstops and report if they are
"triggered" or in an "open" state. This command is typically used to
verify that an endstop is working correctly.
- `GET_POSITION`: Return information on the current location of the
toolhead.
- `SET_GCODE_OFFSET [X=<pos>|X_ADJUST=<adjust>]
[Y=<pos>|Y_ADJUST=<adjust>] [Z=<pos>|Z_ADJUST=<adjust>]`: Set a
positional offset to apply to future G-Code commands. This is
commonly used to virtually change the Z bed offset or to set nozzle
XY offsets when switching extruders. For example, if
"SET_GCODE_OFFSET Z=0.2" is sent, then future G-Code moves will
have 0.2mm added to their Z height. If the X_ADJUST style parameters
are used, then the adjustment will be added to any existing offset
(eg, "SET_GCODE_OFFSET Z=-0.2" followed by "SET_GCODE_OFFSET
Z_ADJUST=0.3" would result in a total Z offset of 0.1).
- `PID_CALIBRATE HEATER=<config_name> TARGET=<temperature>
[WRITE_FILE=1]`: Perform a PID calibration test. The specified
heater will be enabled until the specified target temperature is
reached, and then the heater will be turned off and on for several
cycles. If the WRITE_FILE parameter is enabled, then the file
/tmp/heattest.txt will be created with a log of all temperature
samples taken during the test.
- `SET_VELOCITY_LIMIT [VELOCITY=<value>] [ACCEL=<value>]
[ACCEL_TO_DECEL=<value>] [JUNCTION_DEVIATION=<value>]`: Modify the
printer's velocity limits. Note that one may only set values less
than or equal to the limits specified in the config file.
- `SET_PRESSURE_ADVANCE [EXTRUDER=<config_name>] [ADVANCE=<pressure_advance>]
[ADVANCE_LOOKAHEAD_TIME=<pressure_advance_lookahead_time>]`:
Set pressure advance parameters. If EXTRUDER is not specified, it
defaults to the active extruder.
- `STEPPER_BUZZ STEPPER=<config_name>`: Move the given stepper forward
one mm and then backward one mm, repeated 10 times. This is a
diagnostic tool to help verify stepper connectivity.
- `RESTART`: This will cause the host software to reload its config
and perform an internal reset. This command will not clear error
state from the micro-controller (see FIRMWARE_RESTART) nor will it
load new software (see
[the FAQ](FAQ.md#how-do-i-upgrade-to-the-latest-software)).
- `FIRMWARE_RESTART`: This is similar to a RESTART command, but it
also clears any error state from the micro-controller.
- `STATUS`: Report the Klipper host software status.
- `HELP`: Report the list of available extended G-Code commands.
## Custom Pin Commands
The following command is available when an "output_pin" config section
is enabled:
- `SET_PIN PIN=config_name VALUE=<value>`
## Servo Commands
The following commands are available when a "servo" config section is
enabled:
- `SET_SERVO SERVO=config_name WIDTH=<seconds>`
- `SET_SERVO SERVO=config_name ANGLE=<degrees>`
## Probe
The following commands are available when a "probe" config section is
enabled:
- `PROBE`: Move the nozzle downwards until the probe triggers.
- `QUERY_PROBE`: Report the current status of the probe ("triggered"
or "open").
## Delta Calibration
The following commands are available when the "delta_calibrate" config
section is enabled:
- `DELTA_CALIBRATE`: This command will probe seven points on the bed
and recommend updated endstop positions, tower angles, and radius.
- `NEXT`: If manual bed probing is enabled, then one can use this
command to move to the next probing point during a DELTA_CALIBRATE
operation.
## Bed Tilt
The following commands are available when the "bed_tilt" config
section is enabled:
- `BED_TILT_CALIBRATE`: This command will probe the points specified
in the config and then recommend updated x and y tilt adjustments.
- `NEXT`: If manual bed probing is enabled, then one can use this
command to move to the next probing point during a
BED_TILT_CALIBRATE operation.
## Z Tilt
The following commands are available when the "z_tilt" config section
is enabled:
- `Z_TILT_ADJUST`: This command will probe the points specified in the
config and then make independent adjustments to each Z stepper to
compensate for tilt.
## Dual Carriages
The following command is available when the "dual_carriage" config
section is enabled:
- `SET_DUAL_CARRIAGE CARRIAGE=[0|1]`: This command will set the active
carriage. It is typically invoked from the activate_gcode and
deactivate_gcode fields in a multiple extruder configuration.