when will the new Z-height actually be saved?

holco62

@fcwilt said in when will the new Z-height actually be saved?:

@holco62 said in when will the new Z-height actually be saved?:

...is there a way to bring up the temps first?

Short answer - yes - @Phaedrux has shown a simple approach.

Long answer - there are several different ways to do all that is needed to start a print.

For example, instead of putting everything in bed.g you leave just the essential commands there (the commands you already have) and put everything else (setting temps, waiting for temps, etc) in start.g including the G32 to invoke bed.g.

As you become more comfortable with the firmware there are lots of things possible.

I'm including my equivalent of "start.g" just to give you an idea of the possibilities BUT I am NOT suggesting that you try to adopt anything I have done at this time.

There are lots of extra ; characters there that I added because {1} appeared at the start of empty lines when I pasted the code
; select tool and configure based on filament selected

T0							; select tool 0 so extruder commands below will work
M703							; configure selected filament (sets bed/extruder temps, extrusion multiplier)

; check for selected filament

if move.extruders[0].filament = ""
  M291 R"No Filament Selected" P"Cannot Continue" S2 T0
  abort

; check bed heater active temp setting

if heat.heaters[0].active = 0 
  M291 R"Bed Heater Active Temp = 0" P"Cannot Continue" S2 T0
  abort

; check extruder heater active temp setting

if heat.heaters[1].active = 0 
  M291 R"Extruder Heater Active Temp = 0" P"Cannot Continue S2 T0
  abort
;
; check if homed - allows homing (OK button) or canceling (CLOSE button)
;
if !move.axes[0].homed || !move.axes[1].homed || !move.axes[2].homed
  M291 R"Printer has not been homed" P"Home and Continue?" S3 T0
  G28
;
; setup to print
;
M291 R"Preparing to print" P"Please wait..." T0
;
M106 P2 S255					; lights on
M106 P3 S255					; lights on
M106 P4 S255					; lights on
;
G90						; absolute moves
G1 Z100     F1200				; position for cleaning
G1 X0 Y-145 F6000				; position for cleaning
;
M291 R"Heating Extruder/Bed" P"Please wait..." T0
;
M116							; wait for temps to reach set points
;
M291 R"Priming Extruder" P"Please wait..." T0
;
G92 E0							; reset the extruder logical position
M83							; extruder relative mode
G1  E10 F120					        ; prime the extruder
M400							; wait for extruding to finish
G92 E0							; reset the extruder logical position
;
M98 P"beep_alert_1.g"                                   ; beep paneldue
;
M291 R"Clean Nozzle and Bed" P"Click OK to begin printing" S3 T0
;
M98 P"mesh_comp_map_load.g"		                ; load height map as needed
;
M118 L0 P4 S"FT5|Print begun"

Thanks, I'll see if I can put something together myself.

holco62

I've tried

M109 ; Set Extruder Temperature and Wait

M116 ; Wait for tools

in the start.g file with as last line

G32 ; call bed.g

but when I issue a print command generated by Cura the printer directly starts with G32 and after calibration the bed starts to warm up.

What am I doing wrong?

https://picturepush.com/public/16329875

holco62

This post is deleted!

Phaedrux

@holco62 said in when will the new Z-height actually be saved?:

M109 ; Set Extruder Temperature and Wait

Have you set a temperature? M109 by itself does nothing. See here for how you would use M109

https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M109_Set_Extruder_Temperature_and_Wait

holco62

@Phaedrux
Ok, I was under the impression that the Cura slicer controls the temp

Phaedrux

It does, but in start.g Cura has no input yet. Cura can't control anything until the print gcode starts.

Start.g happens before any slicer code. You can use it for preparing the printer to receive the print gcode.

Heat up, home all, leveling, etc. Then Cura will take over, set the final print temperatures as you've set in the slicer.

holco62

Ok it starts to get a bit clearer (very small bit )

Btw, how can I prevent the printer from homing after G32?

I would like to have this sequence,

First manually set bed temp / hotend temp in Duet control

Load print command> homing axes> G32> start printing, so no homing after G32.

Phaedrux

Post your Cura start gcode. That's where it would be defined.

Technically you don't need to use start.g at all. You could do it all in Cura.

M116; Wait
G28 ; home printer
G32 ; bed.g for leveling

Or just use Start.g to preheat. Since it's a progression you can split it up however it makes sense. If you want you can even call a macro file in your slicer start gcode section.

fcwilt

@holco62 said in when will the new Z-height actually be saved?:

Ok it starts to get a bit clearer (very small bit )

Btw, how can I prevent the printer from homing after G32?

As mentioned start.g executes before any code from the slicer.

There are places in the slicer where you can insert you own code which is usually executed shortly after the first slicer generated code. Exactly when depends on the slicer and the slicer settings used.

I use S3D and it generates the following code just BEFORE inserting code that I might enter into the slicer. What is shown assumes the temp settings are 60 and 190.

G90                      ; absolute XYZ moves
M83                      ; relative E moves
M106 S0                  ; fan off
M140 S60                 ; bed temp to 60
M104 S190 T0             ; extruder temp to 190
; my code would appear at this point

Frederick

holco62

@holco62 said in when will the new Z-height actually be saved?:

Ok it starts to get a bit clearer (very small bit )

Btw, how can I prevent the printer from homing after G32?

I would like to have this sequence,

First manually set bed temp / hotend temp in Duet control

Load print command> homing axes> G32> start printing, so no homing after G32.

Removed the start.g file and added G32 in the Cura exstruder start-g code, everything now works exactly as I want

holco62

@Phaedrux said in when will the new Z-height actually be saved?:

Post your Cura start gcode. That's where it would be defined.

Technically you don't need to use start.g at all. You could do it all in Cura.

M116; Wait
G28 ; home printer
G32 ; bed.g for leveling

Or just use Start.g to preheat. Since it's a progression you can split it up however it makes sense. If you want you can even call a macro file in your slicer start gcode section.

Sorry for quotting myself yesterday I was supposed to quote you in my penultimate post, but better late than never, you nailed it again so thank you

holco62

G32 works well in Cura (Extruder Start Gcode), but with the start of a print when all temps have been reached the effector first slowly approaches the bed, just before the nozzle hits the bed, it's homing and then starts the G32 calibration and goes printing.

Is there any way to skip that initial slowly going to the bed?

I am also curious if other changes / settings are needed with regard to Cura 4.8 which I have now set as a standard Anycubic Predator, especially stringing (PLA) gives me a hard time to get it right with a Mosquito hotend.

I shot a short video of it

https://youtu.be/cFRNCrjWwww

Phaedrux

Everything it does at the start of the print is dictated by the slicer start gcode. Can you copy and paste the first 50 lines or so of a slicer gcode file? Also include your current homedelta, bed.g and config.g so we can see exactly what's going on and can tell you what needs to change.

holco62

Cura doesn't let me copy the start G-code, so I took 2 pictures

Start G-code-1.png

Start G-code-2.png

I'll post the rest in a moment

holco62

homedelta (1).g bed (1).g config (1).g

Phaedrux

@holco62 said in when will the new Z-height actually be saved?:

(Extruder Start Gcode),

So I don't see G32 in your start gcode, but you say you have it in the Extruder start gcode section? Why there? What else do you have there?

The reason for the double homing is that you have G28 at the beginning of your bed.g file.

Can you post the first 50 lines of a sliced gcode file so I can see what the slicer is actually outputting?

holco62

four_square_retrac.8mm.gcode

holco62

The G32 is in the Extruder Start G-code.

Extruder Start G-code.png

Phaedrux

;Generated with Cura_SteamEngine 4.8.0
T0
M190 S60
M104 S210
M109 S210
M82 ;absolute extrusion mode
G32
G21 ;metric values 
G90 ;absolute positioning 
M82 ;set extruder to absolute mode 
M107 ;start with the fan off 
G28 ;Home 
G1 Z15.0 F1000;short move 
G92 E0 ;zero the extruded length 
G1 F200 E3 ;extrude 3mm of feed stock adjust so I don't have to remove any filament 
G92 E0 ;zero the extruded length again 
G1 F4000 ;move to bed 
;Put printing message on LCD screen 
M117 Printing... 
;G5; this is in order to resume on Power failure (only works on SD prints)
M83 ;relative extrusion mode
G1 F3000 E-8
;LAYER_COUNT:99
;LAYER:0
M107
G0 F3600 X-20.499 Y-9.085 Z0.25
;TYPE:SKIRT
G1 F3000 E8
G1 F1800 X-20.49 Y-9.761 E0.02459
G1 X-20.438 Y-10.692 E0.03392
G1 X-20.306 Y-11.615 E0.03392

I think you should remove the G32 from the Extruder start gcode. That's not a usual place to put it.

Also remove the G28 from bed.g. It's better to keep the commands separate so it's more clear about what is happening when.

Then change your start gcode in cura to be this

G21 ;metric values 
G90 ;absolute positioning 
M82 ;set extruder to absolute mode 
M107 ;start with the fan off 
G28 ;Home 
G32 ; calibration
G92 E0 ;zero the extruded length 
G1 F200 E3 ;extrude 3mm of feed stock adjust so I don't have to remove any filament 
G92 E0 ;zero the extruded length again 
G1 F4000 ;move to bed 
;Put printing message on LCD screen 
M117 Printing

holco62

Works perfectly now

https://youtu.be/tdl2iDNiC9Q

What did the line "G1 Z15.0 F1000; short move" that has now been removed?

Btw, I think it's really remarkable that you can remember all those codes