Help with start script ?

Sonicboom

not sure why but every time i start a new print after one has finished, everything is fine until it starts to print the prime line, then it acts as though it is set to absolute positioning without homing and starts to grind all motors and extrude filament until i reset the printer.
this is my start Gcode so not sure why it is doing that because if i reset the printer the same code runs fine, it is just after a print finished and i start a new print without resetting.. Do i need to add anything to the Run before Job gcodes? Thank you!
G28; Home all AxisG92 E0; Reset extruder M420 S1; M117 Homing and Leveling G29 L0 ;Load Mesh slot 0 G29 A ;Activate UBL G29 J3 ;Probe Bed for mesh tilting M117; Purging Extruder G1 Z3.0 F2000; Move Z up before move G1 X2 Y2 Z0.5; Move to start position G1 X120 Y2 Z0.3 F1000 E20; Draw priming line G92 E0; Reset Extruder

Repetier_Support

Hello. Did you have a look on your end gcode or in the server events after a print? Maybe there is a gcode to set te printer to absolute

Sonicboom

Hello, yes Run after Job is blank and Run if job is aborted has my end gcode, maybe that is the issue? should i just use @stopPrint? problem is if i cancel the print something has gone wrong so i probably want the nozzle to move up and out of the way as well as present the bed and turn everything off asap.

; Sample stop code - modify to your needs!

G91; relative positioning

G1 Z5 F3000 ; move z up little to prevent scratching of print

G1 X20 G1 Y125 F2000 ;Prepare for part removal

G90 ; Absolute Positioning

G0 E-4 f3000 ; retract 3mm of filament

M104 S0 ;Turn off extruder

M140 S0 ;Turn off bed

M107 ; Turn off fan

M84 ; Disable Steppers

note, yesterday after posting i noticed i did not have a G90 in my end gcode, not sure it matters for the next print so i added it there as well as start gcode
G90 ; use absolute coordinates M83 ; extruder relative mode

Sonicboom

i did correct the G0 E-4 to G1 E-4 as well as the redundant G1 in part removal.

RAyWB

G90 ; Absolute Positioning

G0 E-4 f3000 ; retract 3mm of filament

Think you should add a

G92 E0 before

G0 E-4 f3000

or place the G90 after

G0 E-4 f3000

Sonicboom

RAyWB wrote
G90 ; Absolute Positioning
G0 E-4 f3000 ; retract 3mm of filament
Think you should add a
G92 E0 before
G0 E-4 f3000
or place the G90 after
G0 E-4 f3000

Thanks, this is what i have now, seems much better, not sure what was causing it but i can now cancel a job and start another without the printer going nuts, note to self; don't piece together start and end gcodes without verifying moves.
G91; relative positioning G1 X80 Y100 Z5 F3000 ; move z up and away G92 E0 ; reset extruder G0 E-6 ; retract 6mm G90 ; Absolute positioning M104 S0 ;Turn off extruder M140 S0 ;Turn off bed M107 ; Turn off fan M84 ; Disable Steppers M300 S440 P100 M300 S440 P200

RAyWB

Think there is still a mistake as at the beginning you just want to lift z by 5mm and bring extruder to another

position.

doing this by relative move is ok for z but as i guess you never know where x and y are (may be close to printers limits) you should move to a defined position.

for me it should look like :

G92 E0 ; reset extruder G0 E-6 ; retract 6mmG91; relative positioning G1 Z5 F3000 ; move z up
G90 ; Absolute positioning G1 X0 Y0 F3000 ; move x and y to defined position M104 S0 ;Turn off extruder M140 S0 ;Turn off bed M107 ; Turn off fan M84 ; Disable Steppers M300 S440 P100 M300 S440 P200

Sonicboom

RAyWB wrote
Think there is still a mistake as at the beginning you just want to lift z by 5mm and bring extruder to another
position.
doing this by relative move is ok for z but as i guess you never know where x and y are (may be close to printers limits) you should move to a defined position.
for me it should look like :
G92 E0 ; reset extruder G0 E-6 ; retract 6mmG91; relative positioning G1 Z5 F3000 ; move z up
G90 ; Absolute positioning G1 X0 Y0 F3000 ; move x and y to defined position M104 S0 ;Turn off extruder M140 S0 ;Turn off bed M107 ; Turn off fan M84 ; Disable Steppers M300 S440 P100 M300 S440 P200

Thank you!, amazing what moving one line of code will do! it will quite literally make or break you. now if i can get it to stop waiting for the extruder to heat up that would be great,
M104 S[first_layer_temperature] ; start nozzle heating but don't wait
worked once and never again..

RAyWB

command M104 just sets nozzle temperature without waiting

M109 sets nozzle temperature and waits , that is what you want

refer to :

https://reprap.org/wiki/G-code</div><div><br/></div><br/>

Sonicboom

yea, i do not want it to wait, since i do UBL and tilt the mesh before printing along with prime line, i prefer not to wait for nozzle to heat up. but thanks, checking out link now, also per Marlinfw.org,
M104 - Set a new target hot end temperature and continue without waiting.