Marlin gcode to level the bed and report how long it took. Used to benchmark different Z_PROBE settings.

abl_speed_test.gcode

;
; Copyright Tom Keller. Distributed under the Boost Software License, Version 1.0.
; (See https://www.boost.org/LICENSE_1_0.txt)
;
M155 S60                             ; Set status interval to 60 seconds
M104 S140                            ; Set temps for abl
M140 S60
G28 O                                ; Home
M190 S60                             ; Wait for temps
M109 S140
M75                                  ; Start print job timer
G29                                  ; Run abl
M420 S1                              ; Enable abl
M104 S0                              ; Turn off hotend
M140 S0                              ; Turn off bed
M18                                  ; Turn off motors
M77                                  ; Stop print job timer
M31                                  ; Show print time
M118 A1 action:prompt_begin Finished ; Tell Octoprint it's finished
M118 A1 action:prompt_choice OK!
M118 A1 action:prompt_show