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Z axis not moving after inital homing

Posted by Srek 
Z axis not moving after inital homing
August 13, 2019 07:04AM
Hi all,
i had to replace the electronics and Firmware of my DuoCube printer.
All motors, endstops, hotends and the heatbed work fine.
I use a Bigtree SKR Pro 1.1 with Marlin 2 and TMC5160.
The endstops test out good using M119 and trigger reliably.
After initial homing the Z axis gets stuck on 0, even the short move back and for does not happen anymore. This does work on both x axis and Y.
After this i can execute X and Y moves and tool changes without problems, but all Z movement commands are just ignored.
Any ideas?
Cheers
Björn


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
VDX
Re: Z axis not moving after inital homing
August 13, 2019 10:32AM
... what's shown with M114? - which position is Z?


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]
Re: Z axis not moving after inital homing
August 13, 2019 11:15AM
If i have HOMING_BACKOFF_MM defined it shows the defined value, otherwise 0. An actual movement after first contact with the endstop does not happen.


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 13, 2019 12:13PM
Just to be sure i switched motor and endstop of Y and Z, the behavior was switched as well so i can rule out motor and endstop.


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
VDX
Re: Z axis not moving after inital homing
August 13, 2019 01:13PM
... you can try with "G92 Z100" and "G92 Z-100" for different starting positions ...


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]
Re: Z axis not moving after inital homing
August 13, 2019 01:35PM
The new position is shown, but nothing actually moves

19:31:50.559 : N14 G28*38
19:31:50.559 : echo:Active Extruder: 0
19:31:56.923 : echo:Active Extruder: 0
19:31:56.923 : X:-30.00 Y:0.00 Z:0.00 E:0.00 Count X:-2400 Y:0 Z:0
19:32:13.806 : N15 G92 Z10*93
19:32:13.806 : X:-30.00 Y:0.00 Z:10.00 E:0.00 Count X:-2400 Y:0 Z:0
19:32:23.488 : N16 M114*16
19:32:23.488 : X:-30.00 Y:0.00 Z:10.00 E:0.00 Count X:-2400 Y:0 Z:0


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
VDX
Re: Z axis not moving after inital homing
August 13, 2019 01:56PM
... have you tried too with "G92 Z-10"?

Depending on your min/max settings it won't move outside the "allowed" space ...

*** EDIT ***
- the idea was to try:

G92 Z10
G0 Z0

G92 Z-10
G0 Z0

If one of the G0 Z0 works, then your min/max definitions have to be set correct ...

Edited 1 time(s). Last edit at 08/13/2019 01:58PM by VDX.


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]
Re: Z axis not moving after inital homing
August 13, 2019 03:12PM
The second command set actually worked.
I have problems understanding why though since Z_MIN_POS and Z_MAX_POS seem correct to me
This is from configuration.h
// The size of the print bed
#define X_BED_SIZE 215
#define Y_BED_SIZE 200

// Travel limits (mm) after homing, corresponding to endstop positions.
#define X_MIN_POS -30
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define X_MAX_POS X_BED_SIZE
#define Y_MAX_POS Y_BED_SIZE
#define Z_MAX_POS 209


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 13, 2019 03:14PM
Please find config and config_adv attached.
Thank you very much for your help.
Next time we meet the beer is on me smiling smiley


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Attachments:
open | download - config.zip (58 KB)
VDX
Re: Z axis not moving after inital homing
August 13, 2019 03:35PM
... hmmm ... my settings are similar.

Maybe the min/max and home-pos settings for Z in your software are not correct?


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]
Re: Z axis not moving after inital homing
August 13, 2019 03:40PM
So far i only controlled the printer via the LCD or Repetier Host. In Repetier Host i set the printer size correctly and home to 0/0/0, just like always do.


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 18, 2019 04:53AM
Does anyone else have any idea? This realy has me stumbed sad smiley


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 18, 2019 05:51AM
M43? check all Z pins don't conflict with anything?
Re: Z axis not moving after inital homing
August 18, 2019 06:46AM
Definitly not a pin or endstop problem. The endstop status for all 4 is reported correctly at all times.
Edit: [youtu.be]
Interestingly the first homing did work when i filmed this, but a subsequent one didn't.

Edited 1 time(s). Last edit at 08/18/2019 06:51AM by Srek.


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 18, 2019 08:36AM
That video shows Z is moving in both directions..

So its moving to X 0, Y 0, Z 0



Use a control program send the printer the contents of the quotes "G1 Z10 F30"
This should move the Z axis up 10mm at (30/60) .5 mm/s

Does this move ? If it does your Z max feed rate is simply to high

If it doesn't then please provide more details, all the details.
You keep saying its fine, but you clearly can't see the issue...
And we cant help without all the details.

I would like to see the output of M119 after you home.
I would like to see the complete M503 output
And finally I want to see the output of M43
Re: Z axis not moving after inital homing
August 18, 2019 08:53AM
M119 shows all endstop triggered after both homing tries, the first that works and the second that doesn't. I already ruled out immediate endstop problems.
Z doesn't move after the incomplete homing, regardless the speed. Only if is set Z pos to a negative value i can get it to move, see Viktors and my post above. If it moves the speed is correct.
M503 delivers this
14:48:29.638 : N20 M503*23
14:48:29.638 : G21    ; Units in mm (mm)
14:48:29.638 : M149 C ; Units in Celsius
14:48:29.638 : M200 D1.75
14:48:29.638 : M200 T1 D1.75
14:48:29.638 : M200 D0
14:48:29.638 : M92 X80.00 Y160.00 Z6464.00 E159.00
14:48:29.638 : M203 X300.00 Y300.00 Z5.00 E25.00
14:48:29.639 : M201 X2000.00 Y2000.00 Z100.00 E10000.00
14:48:29.639 : M204 P2000.00 R2000.00 T2000.00
14:48:29.639 : M205 B20000.00 S0.00 T0.00 X10.00 Y10.00 Z0.30 E5.00
14:48:29.639 : M206 X0.00 Y0.00 Z0.00
14:48:29.639 : M218 T1 X275.00 Y0.00 Z0.000
14:48:29.639 : M145 S0 H180 B70 F0
14:48:29.639 : M145 S1 H240 B110 F0
14:48:29.639 : M301 E0 P7.00 I2.00 D40.00
14:48:29.639 : M301 E1 P7.00 I2.00 D40.00
14:48:29.639 : M304 P196.00 I33.00 D290.00
14:48:29.639 : M906 X900 Y800 Z800
14:48:29.639 : M906 I1 X900
14:48:29.640 : M906 T0 E900
14:48:29.640 : M906 T1 E900
14:48:29.640 : M569 S1 X Y Z
14:48:29.640 : M569 S1 I1
14:48:29.640 : X
14:48:29.640 : M569 S1 T0 E
14:48:29.640 : M569 S1 T1 E
14:48:29.640 : Z2.00

M43 is not recognized, maybe it is only implemented in Marlin 1? I am sure the pin assignment is correct since all endstops and motors work 100%


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: Z axis not moving after inital homing
August 19, 2019 02:33PM
EEPROM override?

DLC


Kits: He3D K200 Kossel, Folgertech Kossel 2020 upgraded E3Dv6, Anet A8 upgraded E3Dv6, Tevo Tarantula enhanced parts and dual-head
Scratch: Large bed Cartesian, Linear slide Delta, Maker-Beam XL Micro Delta
Re: Z axis not moving after inital homing
August 19, 2019 03:24PM
The SKR Pro does not have EEPROM and i did not enable the emulation.


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
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