Hello,
i use that in my Cura as Start-Code:
21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
M117 Bett aufheizen
M140 S50
M190 S0
G28
M190 S50
M104 S200
;G29
G0 X0 Y15 F9000 ; Go to front
;G0 Z0.15 ; Drop to bed
G92 E0 ; zero the extruded length
G1 X40 E25 F500 ; Extrude 25mm of filament in a 4cm line
G92 E0 ; zero the extruded length
G1 E-1 F500 ; Retract a little
G1 X80 F4000 ; Quickly wipe away from the filament line
G1 Z0.15 ; Raise and begin printing.
EX: Velleman K8200, nun Anet 8 Plus