I've been having this issue off and on for quite a while now. Typically it takes me rebooting my computer a couple times and restarting Simplify 3d a few times before it starts the automatic bed leveling.
Most times it gets to the point in the start up code and makes a noise/acts like it's going to start the bed leveling process but it stops. Then it finishes heating up all of the way and starts printing into mid air.
Here is the code that I am using:
Code: Select all
M107 ; start with the fan off
G92 E0 ; zero extruder
M140 S[bed0_temperature] ; begin bed heating
G28 ; home all axes
M109 S150 ; set to cleaning temp and wait
G1 Z150 E-30 F75 ; suck up 30mm of filament
M109 S170 ; heat up rest of way
G1 X45 Y174 F11520 ; move behind scraper
G1 Z0 F1200 ; set Z to height of top of scraper
G1 X45 Y174 Z-.5 F4000 ; wiping
G1 X55 Y172 Z-.5 F4000 ; wiping
G1 X45 Y174 Z0 F4000 ; wiping
G1 X55 Y172 F4000 ; wiping
G1 X45 Y174 F4000 ; wiping
G1 X55 Y172 F4000 ; wiping
G1 X45 Y174 F4000 ; wiping
G1 X55 Y172 F4000 ; wiping
G1 X60 Y174 F4000 ; wiping
G1 X80 Y172 F4000 ; wiping
G1 X60 Y174 F4000 ; wiping
G1 X80 Y172 F4000 ; wiping
G1 X60 Y174 F4000 ; wiping
G1 X90 Y172 F4000 ; wiping
G1 X80 Y174 F4000 ; wiping
G1 X100 Y172 F4000 ; wiping
G1 X80 Y174 F4000 ; wiping
G1 X100 Y172 F4000 ; wiping
G1 X80 Y174 F4000 ; wiping
G1 X100 Y172 F4000 ; wiping
G1 X110 Y174 F4000 ; wiping
G1 X100 Y172 F4000 ; wiping
G1 X110 Y174 F4000 ; wiping
G1 X100 Y172 F4000 ; wiping
G1 X110 Y174 F4000 ; wiping
G1 X115 Y172 Z-0.5 F1000 ; wipe slower and lower Z
G1 Z10 ; raise Z
G28 X0 Y0 ; home XY axes
M109 S140 ; set to probing temp
M204 S300 ; Set probing acceleration
G29 ; Probe
M204 S2000 ; Restore standard acceleration
G1 X5 Y15 Z10 F5000 ; get out the way
G4 S1 ; pause
M400 ; clear buffer
M109 S[extruder0_temperature] ; set extruder temp and wait
G1 Z2 E0 F75 ; extrude filament back into nozzle
M190 S[bed0_temperature] ; wait for bed to finish heating