G90      ; Set to Absolute Positioning
M82      ; Set extruder to absolute mode
G21      ; Metric values
M107     ; Start with the fan off
G92 X0 Y0 Z0 E0 ; Set all axis to 0
G28 Y F1000  ; Home Y axis
G28 X F1000  ; Home X axis
G0 X0 F1000  ; Move X to the edge
G0 Y10 F2000 ; Move Y to start position
G0 Y0 F200; Move Y to start position
G1 E10   ; Extruder 10mm material (purge nozzle)
G1 X270 E120 F200   ; Move to the other edge of the belt and keep extruding
G91
G0 Z0.18
G90
G92 Z0   ; Zero Belt
G92 E0   ; Zero the extruded length
G1 E-4 F3900  ; Retract 4mm at 65mm/s
G1 E0    ; Move extruder back to 0
G92 Y0.25 ; Set Y to start position

M117 BELT Printer Printing...

;˅˅˅˅˅˅˅˅˅˅˅˅˅˅˅˅ - copy from here / paste codes just under here - ˅˅˅˅˅˅˅˅˅˅˅˅˅˅˅˅

M107 ;start with the fan off