bed don't heat in start-gcode

Good day to all,

My problem is that when I start printing, the extruder heats up normally but not the bed.
The printing begins that I am obliged to stop
Since the bed is not hot.
I launched M140 with pronterface and there it works.
I reversed the order of heating between bed and extruder in my start-gcode, same result.

Here is my start-gcode

*******************START*********************************
; generated by Slic3r 1.2.9 on 2017-01-31 at 09:26:48
; external perimeters extrusion width = 0.40mm
; perimeters extrusion width = 0.48mm
; infill extrusion width = 0.48mm
; solid infill extrusion width = 0.48mm
; top infill extrusion width = 0.48mm
G28 ; home all axes
G29 ; autoleveling
M106 ; fan on
M140 s100 ; temperature bed
M104 s240 ; temperature extruder
G1 Z -1.23 ;offset 1.23mm
M109 S240 ;wait for temperature to be reached
G21 ; set units to millimeters
G90 ; use absolute coordinates
M82 ; use absolute distances for extrusion
G92 E0 ; affecte à la position courante E -> 0
***********************************************************
***********************************************************
*******************END*************************************
G92 E0
G1 Z28.200 F7800.000
M107
M104 S0 ; turn off temperature extrudeur
M140 s0 ; turn off temperature bed
M107 ; fan off
M84 ; disable motors



I have a power supply 12V 20A, hotend E3D v6 and hotbed 21,4x21,4 dimension.

I use pronterface (under linux ubuntu 16.04) , slic3r , MarlinRC8, ramps 1.4 board, and mega2560 board with arduino.

Not specifically a CoreXY thing but . . .

M140 S100 sets the target temperature of bed.

M190 S100 tells the machine to wait for the bed to get to 100

Similarly your extruder instruction should not be M104 S240 but M109 S240 which will wait until it gets to 240 before it starts.

I'm surprised Slic3r doesn't do that for you.

Ed


PS if your extruding ABS (240) do you really want your fan to be on?

Hi Ed would,

It is true I should have posted elsewhere even if I have a corexy printer.

Thank you anyway I will change to M190 s100.

If it does not always I'll post a new topic in the correct category.

PS

I am a beginner and I thought that the fan had to be powered in the startcode. I will try without.

No problem.

I was just guessing about the fan.

If it is for cooling the hot-end barrel it should be on all the time.
If it is pointing at the printed part then you can experiment with it but for ABS it is not usually needed.

Regards

Ed