M561                        ; clear any bed transform
;M140 S80                    ; Start Heating the bed
;M109 S240                   ; Start Heating the nozzle
M557 X20:250 Y20:280 S230
G28 Y
G28 X
G28 Z
G29 S0
M374  							; Save calibration data. Default is sys/heightmap.csv
G1 H1 X280 Y280 Z15
;M140 S0
;M109 S0