Unable to home z axis

droftarts

@Kayjay yes, please post your current files.

For the probe, just to confirm, it triggers when close to the bed, both the LED on the IR probe itself, and goes from 0 to 530ish in DWC,

Also, how exactly are you triggering the home all (or Z)? Using DWC buttons?

Ian

Kayjay

@droftarts

It would appear that I have the Bigbox Pro Hybrid Titan, it's the one with the Titan extruder on the back of the machine rather than above the hotend. The probe changes from 0 to 537 when activated by my finger or a piece of paper etc but the bed never rises to activate the probe, this is the whole problem I am suffering. X and Y home fine at 0 on the left front side of the bed but as you can see from homez and homeall the head moves to the centre of the bed and then just stops whatever height the bed is at, the bed just doesn't move

Here are my current files.

; bed.g
M561 ; clear any bed transform
G29  ; probe the bed and enable compensation

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves
M550 P"Bigbox1"                         ; set printer name

; Network
M552 P0.0.0.0 S1                        ; enable network and acquire dynamic address via DHCP
M586 P0 S1                              ; enable HTTP
M586 P1 S0                              ; disable FTP
M586 P2 S0                              ; disable Telnet

; Drives
M569 P0 S1                              ; physical drive 0 goes forwards
M569 P1 S1                              ; physical drive 1 goes forwards
M569 P2 S0                              ; physical drive 2 goes backwards
M569 P3 S1                              ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                        ; set drive mapping
M350 X16 Y16 Z16 E16 I1                 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E420.00       ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00     ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X750.00 Y500.00 Z20.00 E250.00     ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30            ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                        ; set axis minima
M208 X300 Y200 Z200 S0                  ; set axis maxima

; Endstops
M574 X1 Y1 S1                           ; set active high endstops
M574 Z1 S2                              ; set endstops controlled by probe

; Z-Probe
M558 P1 H5 F120 T6000                   ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z2.5                     ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S20                ; define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700             ; set thermistor + ADC parameters for heater 0
M143 H0 S120                            ; set temperature limit for heater 0 to 120C
M305 P1 X200                            ; configure PT100 for heater 1
M143 H1 S320                            ; set temperature limit for heater 1 to 320C

; Fans
M106 P0 S0 I0 F500 H-1                  ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45               ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                        ; define tool 0
G10 P0 X0 Y0 Z0                         ; set tool 0 axis offsets
G10 P0 R0 S0                            ; set initial tool 0 active and standby temperatures to 0C

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Thu Aug 06 2020 10:36:11 GMT+0100 (British Summer Time)
G91                     ; relative positioning
G1 H2 Z5 F6000          ; lift Z relative to current position
G1 H1 X-305 Y-205 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000       ; go back a few mm
G1 H1 X-305 Y-205 F360  ; move slowly to X and Y axis endstops once more (second pass)
G90                     ; absolute positioning
G1 X150 Y100 F6000        ; go to first bed probe point and home Z
G30                     ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91                    ; relative positioning
;G1 Z5 F100             ; lift Z relative to current position
;G90                    ; absolute positioning

; homex.g

G91               ; relative positioning
G1 H2 Z5 F6000    ; lift Z relative to current position
G1 H1 X-305 F1800 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F6000    ; go back a few mm
G1 H1 X-305 F360  ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-5 F6000   ; lower Z again
G90               ; absolute positioning

; homey.g

G91               ; relative positioning
G1 H2 Z5 F6000    ; lift Z relative to current position
G1 H1 Y-205 F1800 ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y5 F6000    ; go back a few mm
G1 H1 Y-205 F360  ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F6000   ; lower Z again
G90               ; absolute positioning

; homez.g

G91              ; relative positioning
G1 H2 Z5 F6000   ; lift Z relative to current position
G90              ; absolute positioning
G1 X150 Y100 F6000 ; go to first probe point
G30              ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91             ; relative positioning
;G1 Z5 F100      ; lift Z relative to current position
;G90             ; absolute positioning

Kayjay

@droftarts
Sorry, I forgot to mention how I activate the probe. I've tried Homeall and Homez using the buttons on DWC Machine Control, Head movement.

Is there any other method I can use which may help?

Phaedrux

@Kayjay said in Unable to home z axis:

X and Y home fine at 0 on the left front side of the bed but as you can see from homez and homeall the head moves to the centre of the bed and then just stops whatever height the bed is at, the bed just doesn't move

Your config looks correct and it sounds like it's trying to home correctly. Your probe seems to be registering because the LEDs light up. But your Z axis doesn't seem to be moving.

Does the Z axis ever move?

Can you send these commands to try and test the Z axis movement. Make sure there is enough travel available on the Z axis in either direction just to try and avoid a crash.

G92 Z10
G91
G1 Z5 F60

That should let us determine if the Z motor is actually working.

droftarts

@Kayjay said in Unable to home z axis:

M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X750.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent

This can't be the config.g you're using. All your motor settings are back at the original values. I thought they were now:

M92 X160.00 Y360.00 Z400.00 E304.00 ; set steps per mm
M566 X480.00 Y480.00 Z24.00 E300.00 ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z360.00 E1500.00 ; set maximum speeds (mm/min)
M201 X750.00 Y750.00 Z100.00 E5000.00 ; set accelerations (mm/s^2)
M906 X1300 Y1300 Z1300 E1300 I30 ; set motor currents (mA) and motor idle factor in per cent

Please copy the contents of config.g from DWC (as in, what's actually on your SD card) and paste them in your reply. I think you've just copied and pasted old config files from your PC.

Also, I think what @Phaedrux was trying to say is that you need to test the Z motors at low speed, and find the speed that they stall at. So type in each line of the following at the gcode console in DWC, and see what speed the Z axis stops being able to move at:

G92 Z10 ; Set Z axis position
G91 ; set to relative positioning
G1 Z5 F30 ; move bed down 5mm at F30
G1 Z-5 F30 ; move bed up 5mm at F30
G1 Z5 F60
G1 Z-5 F60
G1 Z5 F90
G1 Z-5 F90
G1 Z5 F120
G1 Z-5 F120
G90 ; set absolute positioning

F120 is what your probing move is set to. If the motor can't move at this speed, that'll be why it won't home.

Ian

Kayjay

@droftarts

Thanks for the info. I have gathered several sets of files and it appears I've installed the wrong ones, I do apologise. I'll sort that out in the morning (as you can see I'm awake in the middle of the night) and also delete all the out of date stuff or at least mark it as such so I don't make the same mistake again.

To clarify what I did was copy and paste from system editor in DWC not the card, I must have inadvertently loaded the wrong config files into DWC at some point in the last day or so simply trying different things to test situations but as I say I will rectify this in the morning and ensure I have the correct files installed.

I'll also follow your instructions to test for the stall speed of the Z motors. Just to clarify, Z motors do work at the speed set in homeall, homex, and homey, they move up and down 5mm as per the command settings in the various homing files but wherever the bed is set, at any distance from the head it never moves when it reaches the G30 command.
Your list of commands should help sort out what's happening and possibly where the fault lies.

Thanks again
Keith

Kayjay

@Phaedrux

droftarts spotted I was using an old set of config files so I'll correct that in the morning.

Regarding your questions, Z does move, in fact it moves whenever commanded to in homeall, homex and homey it just fails in homez, I'm assuming when it reaches G30 as it executes every command before that instruction.
I will though test your instructions in the morning, I will also try out M122 and M98 P"config.g" and post the results, my apologies for not doing this before when you asked.

Thanks again
Keith

Kayjay

Should I make and post a video of what's happening? Would that help? Should I use 'Upload File' to do this? I;m assuming 'Upload Image' is for stills

Keith

droftarts

@Kayjay there’s a limit on the size of file you can upload, and videos are usually too big. Better to upload a video to somewhere like YouTube and post a link to it.

Ian

Kayjay

@droftarts
My apologies for one massive error, the files I had installed on my SD were the ones as I explained earlier but I'm afraid those are the only ones I can find. I do have lots of copies -1, -2 etc etc but they appear to be the same so I've made a new set using the config tool and your figures which you noted down for me in your previous post, thank you so much, it was an enormous help. I'll now post the config.g I have on my SD and I would be very grateful if you would cast an eye over it and confirm it's ok. If it is I will then proceed with the next set of test that yourself and Phaedrux has listed for me. Again, I must thank you both for the time you have spent working with my problem, it's only because of that effort that hbas stopped me giving up and buying an Anet 8 Plus which seems good value for money and given that Thomas S has given it the thumbs up I was tempted but I prefer to work with my Bigbox and solve the problem. One main reason is the excellent Duet, there is nothing to touch it on the market ( it's just so darned complicated for novices like me ) Thanks again Ian, I do appreciate everything you've done for me, you really are a star !

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves
M550 P"Bigbox1"                         ; set printer name

; Network
M552 P0.0.0.0 S1                        ; enable network and acquire dynamic address via DHCP
M586 P0 S1                              ; enable HTTP
M586 P1 S0                              ; disable FTP
M586 P2 S0                              ; disable Telnet

; Drives
M569 P0 S1                              ; physical drive 0 goes forwards
M569 P1 S1                              ; physical drive 1 goes forwards
M569 P2 S0                              ; physical drive 2 goes backwards
M569 P3 S1                              ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                        ; set drive mapping
M350 X16 Y16 Z16 E16 I1                 ; configure microstepping with interpolation
M92 X160.00 Y360.00 Z400.00 E304.00     ; set steps per mm
M566 X480.00 Y480.00 Z24.00 E300.00     ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z360.00 E1500.00 ; set maximum speeds (mm/min)
M201 X750.00 Y750.00 Z100.00 E5000.00     ; set accelerations (mm/s^2)
M906 X1300 Y1300 Z1300 E800 I30            ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                        ; set axis minima
M208 X300 Y200 Z200 S0                  ; set axis maxima

; Endstops
M574 X1 Y1 S1                           ; set active high endstops
M574 Z1 S2                              ; set endstops controlled by probe

; Z-Probe
M558 P1 H5 F120 T6000                   ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y25 Z2.5                    ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S20                ; define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700             ; set thermistor + ADC parameters for heater 0
M143 H0 S120                            ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 R4700             ; set thermistor + ADC parameters for heater 1
M143 H1 S320                            ; set temperature limit for heater 1 to 320C

; Fans
M106 P0 S0 I0 F500 H-1                  ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45               ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                        ; define tool 0
G10 P0 X0 Y0 Z0                         ; set tool 0 axis offsets
G10 P0 R0 S0                            ; set initial tool 0 active and standby temperatures to 0C

Just a point, I know that there are a few commands that have to be either before or after others. Am I ok regarding this respect, is everything in the right order?

Thanks again
Keith

droftarts

@Kayjay looks mostly okay, and in the correct order. You have chosen the default thermistor settings, and a couple of other minor differences. Compare it to the config in your post earlier, here: https://forum.duet3d.com/post/171309

Ian

Kayjay

@droftarts
Ah yes, I forgot to set the PT100 didn't I. My Usual dummy self !

Here are the M122 results :

10:47:25 AMM122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet Ethernet 1.02 or later
Board ID: 08DDM-9FAMU-JW4S4-6JKD4-3SJ6M-92Y7V
Used output buffers: 3 of 24 (15 max)
=== RTOS ===
Static ram: 25712
Dynamic ram: 92764 of which 0 recycled
Exception stack ram used: 272
Never used ram: 12324
Tasks: NETWORK(ready,628) HEAT(blocked,1232) MAIN(running,3736) IDLE(ready,160)
Owned mutexes:
=== Platform ===
Last reset 00:43:40 ago, cause: software
Last software reset at 2020-08-15 10:03, reason: User, spinning module GCodes, available RAM 12324 bytes (slot 1)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 44.2, current 44.5, max 44.6
Supply voltage: min 24.5, current 24.6, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-08-15 10:47:18
Cache data hit count 4294967295
Slowest loop: 1.11ms; fastest: 0.07ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 0, FreeDm: 160, MinFreeDm: 160, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 4.49ms; fastest: 0.06ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
Interface state 5, link 100Mbps full duplex
10:47:17 AMM122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet Ethernet 1.02 or later
Board ID: 08DDM-9FAMU-JW4S4-6JKD4-3SJ6M-92Y7V
Used output buffers: 3 of 24 (15 max)
=== RTOS ===
Static ram: 25712
Dynamic ram: 92764 of which 0 recycled
Exception stack ram used: 272
Never used ram: 12324
Tasks: NETWORK(ready,628) HEAT(blocked,1232) MAIN(running,3736) IDLE(ready,160)
Owned mutexes: ToolList(NETWORK)
=== Platform ===
Last reset 00:43:32 ago, cause: software
Last software reset at 2020-08-15 10:03, reason: User, spinning module GCodes, available RAM 12324 bytes (slot 1)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 44.2, current 44.4, max 44.6
Supply voltage: min 24.5, current 24.6, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-08-15 10:47:11
Cache data hit count 4294967295
Slowest loop: 1.11ms; fastest: 0.07ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 0, FreeDm: 160, MinFreeDm: 160, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 4.48ms; fastest: 0.06ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
Interface state 5, link 100Mbps full duplex
10:46:18 AMM122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet Ethernet 1.02 or later
Board ID: 08DDM-9FAMU-JW4S4-6JKD4-3SJ6M-92Y7V
Used output buffers: 3 of 24 (15 max)
=== RTOS ===
Static ram: 25712
Dynamic ram: 92764 of which 0 recycled
Exception stack ram used: 272
Never used ram: 12324
Tasks: NETWORK(ready,628) HEAT(blocked,1232) MAIN(running,3736) IDLE(ready,160)
Owned mutexes: ToolList(NETWORK)
=== Platform ===
Last reset 00:42:33 ago, cause: software
Last software reset at 2020-08-15 10:03, reason: User, spinning module GCodes, available RAM 12324 bytes (slot 1)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 44.3, current 44.5, max 44.6
Supply voltage: min 24.5, current 24.6, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-08-15 10:46:12
Cache data hit count 4294967295
Slowest loop: 1.11ms; fastest: 0.07ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 0, FreeDm: 160, MinFreeDm: 160, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 4.47ms; fastest: 0.06ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
Interface state 5, link 100Mbps full duplex
10:46:13 AMM122
10:46:00 AMM122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet Ethernet 1.02 or later
Board ID: 08DDM-9FAMU-JW4S4-6JKD4-3SJ6M-92Y7V
Used output buffers: 1 of 24 (10 max)
=== RTOS ===
Static ram: 25712
Dynamic ram: 92764 of which 0 recycled
Exception stack ram used: 272
Never used ram: 12324
Tasks: NETWORK(ready,628) HEAT(blocked,1232) MAIN(running,3736) IDLE(ready,160)
Owned mutexes:
=== Platform ===
Last reset 00:42:15 ago, cause: software
Last software reset at 2020-08-15 10:03, reason: User, spinning module GCodes, available RAM 12324 bytes (slot 1)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 42.8, current 44.4, max 44.7
Supply voltage: min 24.5, current 24.6, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-08-15 10:45:53
Cache data hit count 4294967295
Slowest loop: 3.61ms; fastest: 0.06ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 0, FreeDm: 160, MinFreeDm: 160, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 9.40ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
Interface state 5, link 100Mbps full duplex
10:04:02 AMConnection established!
10:03:55 AMDisconnected.
9:58:19 AMConnection established!
9:58:19 AMPage Load complete!

Kayjay

These are the results for the M98

11:12:17 AMM98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled

droftarts

@Kayjay I’d say have a go with the Z movement tests, once you have your config.g sorted.

You can tell from the M122 response if the Z axis has stalled. Try moving Z, and if it doesn’t, send M122 and look at this line in the response:

Driver 2: standstill, SG min/max not available

The bit after SG min/max will have numbers. If the max is 1023, the axis has tried to move, but stalled. It could be that the Z axis is binding, particularly as you have two motors on Z.

Ian

Kayjay

I sorted the config.g, the PT100 wasn't configured to use the daughterboard, just a slip of the mind .

This is the result of all the drivers from M122. I tried to move z then did the M122

Driver 0: standstill, SG min/max 0/234
Driver 1: standstill, SG min/max 0/295
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available

I assume this indicates that Z isn't trying to move. I can't get it to move using any Go or G1 command but it will move in homeall and homez.

I have made a video of Homeall.z which shows x and y homing, then x moving to 150 and y to 100 which is the centre of the bed. After that nothing happens, as though G30 is being ignored completely.

I'm busy trying to upload the video to youtube but at the moment I'm not able to, I do have an account but I have never uploaded anything to my account so it's a matter of another learning curve.

I am getting very close to giving in as nothing seems to works. I'd even send it to Josh at E3D but they no longer handle the Bigbox so I don't think they'll do a repair.To be honest I'd be happy to pay anyone who can make this darned thing work otherwise its the Anet A8 Plus. I am getting very frustrated even with the great help you've all given me. I feel there is an electronic problem rather than software. I'm just at a loss, you guys have been so amazing and helpful, your hints and tips have been amazing too but I just don't know what to do any more. For one I'm a novice so to speak, I don't understand half of the speak, I'd just be happy with a working printer that I can throw a sliced prog in and let it print me a nice result.

Phaedrux

It sounds like the Z axis isn't stalling, so that's a good sign.\

The reason it won't move the Z axis with G0 or G1 is probably because it hasn't been homed yet, So unless you've sent a G92 Z10 to force the Z axis into a homed position, it won't move.

@Phaedrux said in Unable to home z axis:

https://wiki.e3d-online.com/BigBox_Version_Overview

I think this may be an issue of Z axis steps per mm being incorrect.

The marlin config for the Bigbox pro hydrid is 1600 steps per mm on Z. You've got it configured as 400.

#define DEFAULT_AXIS_STEPS_PER_UNIT {160,180,1600,417.5} // default steps per unit for Titan BigBox

So try changing your M92 Z400 to M92 Z1600 and try to homeall again.

droftarts

@Kayjay Have you been able to post the video? Also, I’ve sent you a private message. Click the speech balloon icon at the top of the page to see messages.

Ian

Kayjay

@Phaedrux
Well, there is a small improvement, the bed now rises in the steps I have set in homeall, I have to keep homing but by hte time it reaches the top it crashes or rather would if I don't do an emergency stop. I've also tried holding my finger under the probe whilst it is homing , the LED lights but it doesn't stop, neither does it stop as it lights just before I hit emergency stop.

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sat Aug 15 2020 09:44:17 GMT+0100 (British Summer Time)
G91                     ; relative positioning
G1 H2 Z-25 F6000          ; lift Z relative to current position
G1 H1 X-305 Y-205 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000       ; go back a few mm
G1 H1 X-305 Y-205 F360  ; move slowly to X and Y axis endstops once more (second pass)
G90                     ; absolute positioning
G1 X150 Y100 F6000       ; go to first bed probe point and home Z
G30                     ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91                    ; relative positioning
;G1 Z5 F100             ; lift Z relative to current position
;G90                          ; absolute positioning

The Z-25 setting is temporary to enable a quicker bed rise so I don't have to hit homeall a hundred and umpteen times. Obviously I stop it crashing before it reaches it's limit

droftarts

@Kayjay does the probe still give sensible numbers in DWC, ie 0 when not triggered, 500+ when triggered?

Can you post some pictures of the Duet and wiring?

Ian

Kayjay

@droftarts Yes, the probe numbers are still correct, 0 and 537. I've also managed to upload the video I made yesterday, I suppose it's out of date now as it shows that the bed doesn't rise after homeall but I thought I'd post it for completion. Here's the link, you may have to wait until 4pm for it to show, it's the earliest it would allow me to show it.

https://youtu.be/Xtr5PvMXFso

I'll also take some stills of the Duet wiring. Is it possible to post pics on here or should I put them somewhere else?