HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING

[Jaw8850]

@Veti

I'm still confused on the Thermistor settings

here is my Bed Thermistor (E3D mains powered heat bed with E3D thermistor (B4725 from E3D documentation)

M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 ; configure sensor 0 as thermistor on pin bedtemp

M950 H0 C"bedheat" Q10 T0 ; create bed heater output on bedheat and map it to sensor 0

M307 H0 R1.115 C329.1 D4.73 S1.00 V24.2 ; disable bang-bang mode for the bed heater and set PWM limit

and my E3D Hotend
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 R1.415 C284.6 D6.03 S1.00 V24.2 ; disable bang-bang mode for heater and set PWM limit

[Veti]

@Jaw8850 said in HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING:

here is my Bed Thermistor (E3D mains powered heat bed with E3D thermistor (B4725 from E3D documentation)

can you link that, because its wrong. its missing the C parameter

see
https://duet3d.dozuki.com/Wiki/Connecting_thermistors_or_PT1000_temperature_sensors#Section_Thermistor_parameters

[Jaw8850]

@Veti here is link to Wiki for Duet (I'm running Duet 2 Ethernet board) says Duet 3 needs C but Duet 2 doesnt?

https://duet3d.dozuki.com/Wiki/Connecting_thermistors_or_PT1000_temperature_sensors
![edbe464d-5f3b-4a9f-a04d-de6bcec8ed4c-image.png]

(/assets/uploads/files/1610138829376-edbe464d-5f3b-4a9f-a04d-de6bcec8ed4c-image.png)

[Veti]

@Jaw8850 said in HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING:

here is link to Wiki for Duet (I'm running Duet 2 Ethernet board) says Duet 3 needs C but Duet 2 doesnt?

it doesnt say that at all.
the duet 2 example is for a completely different thermistor.

[Jaw8850]

@Veti
I see it now. I used the configurator then did PID and thought I was good. How does this look?

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" Q10 T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 R1.115 C329.1 D4.73 S1.00 V24.2 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S200 ; set temperature limit for heater 0 to 200C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 R1.415 C284.6 D6.03 S1.00 V24.2 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S300 ; set temperature limit for heater 1 to 300C

M570 S360 ; Heater fault detections allow 1 minute

[Veti]

dont forget to pid tune again. because you were operating at the wrong temperature

[Jaw8850]

@Veti
I will definitely do that. I'm just fighting this homing mess. G28 Z throws an error and says insufficient axes homed. this is after I did G28 Y and G28 X it won't let me use G28 Z

[Veti]

thats because you modified the homez and removed the H2 part

[Jaw8850]

@Veti
Thank You!!!!!!!!! I truly appreciate your help. Now I have a baseline I can build from. PID tune in progress

[Jaw8850]

@Veti
OK, I have re-run PID tuning on bed 1st then hotend. I have trimmed down my config files I believe. I am running G32 which homes all then probes center then probes each side lead screws. I then run G1 X137 Y156 Z5 to move the print head to the center of the bed. I then run G30 to get a zero value followed by G29. When done my mesh is a mess and the original z in the center of the bed is WAY BELOW 0, like -.962. any ideas what may cause this? I am running a mini IR probe and probing each spot 5 times with an S value of 0. I am probing a black textured pei sheet.

config.g
bed.g
homeall.g
homez.g

[Phaedrux]

Can you show a photo of your bed surface?

Was it working at all before you updated from 2.05?

Taking a look at your latest files now.

[Phaedrux]

I notice you have S0 in your M558. Delete that. The default is 0.03 and I don't think 0 is a valid way to use it.

Can you also post the results of M122 and M98 P"config.g"?

[Phaedrux]

By the way, if you're using stall detection for X and Y you really only need to make a single pass. A slower second pass makes no sense in this context since a good stall needs a short sharp shock.

M913 X50 Y50 Z50	    ; drop motor currents to 50%
M915 X Y S3 R0	    	; set sensitivity to +3 unfiltered
G1 H1 X-305  F4800    	; move X all the way left and stop at end
G4 P250                 ; wait 250msec
G1 X10 F12000	        ; go back a few mm
G4 P250                 ; wait 250msec
G1 H1 X-305  F4800    	; move slowly to X axis endstop once more (second pass)
G1 X10 F12000	        ; go back a few mm
G4 P500                 ; wait 500msec
G1 H1 Y-305  F4800	    ; move Y all the way forward and stop at end
G1 Y10 F12000	        ; go back a few mm
G1 H1 Y-305  F4800    	; move slowly to Y axis endstop once more (second pass)
G4 P500                 ; wait 500msec
G0 X127 Y142	F12000  ; go to back center of bed for measurement
G4 P500                 ; wait 500msec

[Jaw8850]

@Phaedrux
Thank you, I've taken out the S, and changed up Home All and HomeY and HomeX

Here is M122

1/8/2021, 8:06:43 PM	M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2 running on Duet Ethernet 1.02 or later
Board ID: 08DGM-9T6BU-FG3S0-7JTD8-3S06N-KB4BD
Used output buffers: 3 of 24 (16 max)
=== RTOS ===
Static ram: 23460
Dynamic ram: 68864 of which 100 recycled
Never used RAM 19656, free system stack 104 words
Tasks: NETWORK(ready,185) HEAT(blocked,309) MAIN(running,400) IDLE(ready,19)
Owned mutexes:
=== Platform ===
Last reset 00:30:06 ago, cause: software
Last software reset at 2021-01-08 19:36, reason: User, GCodes spinning, available RAM 19864, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
MCU temperature: min 33.8, current 34.6, max 35.5
Supply voltage: min 24.1, current 24.2, max 24.3, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: position 81011, standstill, SG min/max 0/352
Driver 1: position 5994, standstill, SG min/max 0/348
Driver 2: position 16295, standstill, SG min/max 0/1023
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max 0/1023
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-01-08 20:06:40
Cache data hit count 2734090471
Slowest loop: 295.16ms; fastest: 0.17ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 2.0ms, write time 18.7ms, max retries 0
=== Move ===
DMs created 83, maxWait 392107ms, bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves 492, completed moves 492, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 6], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
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
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 295.42ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex

homeall (1).g
homex.g
homey.g

[Jaw8850]

@Phaedrux

Here is result of M98"config.g"

1/8/2021, 8:08:09 PM m98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Error: Pin 'fan1' is not free
Error: Fan number 2 not found

[Phaedrux]

G30 Z ; home z by probing the bed
G1 H1 Z3 ; lower bed for clearance

In your homeall there are two things that aren't right.

First G30 doesn't need Z. G30 by itself just means probe z at the current location.

and you definitely don't want G1 H1 Z3 there. The H1 is a homing move. In your case both these things don't really have any effect, but figured you should know.

If you want to raise the Z axis to a certain height at that point just use G1 Z

[Phaedrux]

@Jaw8850 said in HELP WITH HEIGHT MAP HAS SUBSTANTIAL Z OFFSET WARNING:

Error: Pin 'fan1' is not free
Error: Fan number 2 not found

Looks like you've got some fan problems too.

M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T70                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"fan1" Q500                               ; create fan 2 on pin fan1 and set its frequency
M106 P2 S0.5 H1 T60                                ; set fan 2 value. Thermostatic control is turned on

You're using fan1 twice. One of them is probably supposed to be fan2.

[Phaedrux]

The position that you use to probe the Z axis should be the same between homeall and homez. It should also be the same point you use for the G30 before running G29.

G1 X137 Y156 F2000 ; put head over the centre of the bed, or wherever you want to probe

G0 X127 Y142 F12000 ; go to back center of bed for measurement

[Jaw8850]

@Phaedrux
Got the fans sorted, thank you
1/8/2021, 8:20:45 PM m98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled

and I adjusted the Homez and homeall to match

config.g
bed.g
homeall.g
homez.g

[Jaw8850]

@Phaedrux

Reference a Mesh Bed Leveling Macro, does this look right? I commented out the temperature settings until I know it's probing correctly etc.

M561 ; clear any bed transform
;M140 S70 ; Start Heating the bed
;M109 S200 ; Start Heating the nozzle
G32 ; Home all & adjust lead screws
G1 X137 Y156 Z5 ; move to center of the bed
G30 ; probe Z
G29 ; run mesh bed leveling
G1 H1 X240 Y240 Z50
;M140 S0
;M109 S0