Hiccups everywhere

NitroFreak

So, after reading often that i have a high number of hiccups and after searching, not finding anything directly wrong with my setup, i wanted to ask directly if anyone knows what´s wrong.

This is two consecutive M122´s, 11 minutes apart.

8:02:33 PMM122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.03 running on Duet WiFi 1.02 or later
Board ID: 08DGM-917NK-F23T0-6J9DJ-3S86S-TWBWD
Used output buffers: 3 of 24 (16 max)
=== RTOS ===
Static ram: 25680
Dynamic ram: 94004 of which 0 recycled
Exception stack ram used: 468
Never used ram: 10920
Tasks: NETWORK(ready,652) HEAT(blocked,812) MAIN(running,3820) IDLE(ready,160)
Owned mutexes:
=== Platform ===
Last reset 01:24:49 ago, cause: software
Last software reset at 2020-05-03 18:37, reason: User, spinning module GCodes, available RAM 10948 bytes (slot 3)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 16
Free file entries: 8
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min 40.6, current 44.2, max 44.5
Supply voltage: min 24.2, current 24.5, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max 0/1023
Driver 1: standstill, SG min/max 0/1023
Driver 2: standstill, SG min/max 0/246
Driver 3: standstill, SG min/max 0/1023
Driver 4: standstill, SG min/max 0/1023
Date/time: 2020-05-03 20:02:31
Cache data hit count 4294967295
Slowest loop: 192.45ms; fastest: 0.08ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 498151, FreeDm: 169, MinFreeDm: 142, MaxWait: 2004ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 12843, completed moves: 12843, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
Heater 0 is on, I-accum = 0.3
Heater 2 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 1 in use
Movement lock held by file
http is idle in state(s) 0
telnet is idle in state(s) 0
file is doing "G4 P2000" in state(s) 0 12
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: 290.50ms; fastest: 0.08ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
- WiFi -
Network state is running
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 1
WiFi firmware version 1.23
WiFi MAC address b4:e6:2d:52:f6:45
WiFi Vcc 3.35, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 24312
WiFi IP address 192.168.0.93
WiFi signal strength -57dBm, reconnections 0, sleep mode modem
Socket states: 0 0 0 0 0 0 0 0

7:51:54 PMM122

Cache data hit count 4294967295
Slowest loop: 187.41ms; fastest: 0.07ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 1123867, FreeDm: 163, MinFreeDm: 110, MaxWait: 2461902ms
Bed compensation in use: none, comp offset 0.000

*Shortened due to 10k character limit*

As you can see, in the 11 minutes print time that went by, it managed to amass 498000 hiccups.
How can this be?

Here´s my config.g

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Feb 03 2019 22:30:32 GMT+0100 (Central European Standard Time)

; General preferences
G90                                             ; Send absolute coordinates...
M83                                             ; ...but relative extruder moves

; Network
M550 P"ARPEG"                                   ; Set machine name
M552 S1                                         ; Enable network
M587 S"KDG-4F519" P"ApbjYbr9nQu7"               ; Configure access point. You can delete this line once connected
M586 P0 S1                                      ; Enable HTTP
M586 P1 S0                                      ; Disable FTP
M586 P2 S0                                      ; Disable Telnet

; Drives
M569 P0 S1                                      ; Drive 0 goes forwards (X1)
M569 P1 S1                                      ; Drive 1 goes forwards (X2)
M569 P2 S0                                      ; Drive 2 goes backwards (Z)
M569 P3 S1                                      ; Drive 3 goes forwards extruder
M569 P4 S1                                      ; Drive 4 goes backwards extruder 2
M569 P5 S0 T8:8:8:8                             ; Drive 5 minimum step pulse timing 3 microseconds (JMC servo minimum 2.5 microseconds)
M584 X0:1 Y5 Z2 E3:4                            ; Apply custom drive mapping
M350 Y1 Z16 ;E16:16I0                           ; Configure microstepping without interpolation
M350 X16:16 I1      E16:16 I1                   ; Configure microstepping with interpolation
M92 X88.89 Y360.00 Z800.00 E411:430             ; Set steps per mm, mk8 extruder 94.3
M566 X500.00 Y500.00 Z200.00 E1500.00:1500.00   ; Set maximum instantaneous speed changes (mm/min)

M203 X24000.00 Y24000.00 Z2000.00 E4200.00:4200.00 ; Set maximum speeds (mm/min)
;M201 X2500.00 Y2500.00 Z700.00 E2000.00:2000.00  ; Set accelerations (mm/s^2)
M201 X10000.00 Y10000.00 Z700.00 E2000.00:2000.00  ; Set accelerations (mm/s^2)
M906 X1600.00 Y800.00 Z1100.00 E1100.00:1100.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
M593 F24                                        ; Dynamic Acceleration Adjustment at 24.5 Hertz
M572 D0 S0.02 D1 S0.22                          ; Pressure advance 
M84 S30                                         ; Set idle timeout
;M207 S0.2 F1800 Z0.8

; Axis Limits
M208 X5 Y5 Z0 S1                                ; Set axis minima
M208 X215 Y255 Z280 S0                          ; Set axis maxima

; Endstops
M574 X1 Y1 Z1 S1                                ; Set active high endstops

; Z-Probe
M558 P0 H5 F120 T6000                           ; Disable Z probe but set dive height, probe speed and travel speed
M557 X20:170 Y20:195 S20                        ; Define mesh grid

; Heaters
M307 H6 A-1 C-1 D-1                             ; Disables heater 6 output as heater output and configures it as General I/O port
M307 H7 A-1 C-1 D-1                             ; Disables heater 7 output as heater output and configures it as General I/O port
M570 H0 P10 T40                                 ; Lets the chamber deviate a max of 40C for max 10sec from its set temp (to not raise a fault when opening oven door)
;M140 H-1                                       ; Tell the firmware there is no bed heater
M307 H0 B0 A188.1 C188.1 D3.5 S1.00             ; Disable bang-bang mode for the bed heater and set PWM limit (G=188.1, tc=275.7, td=-1.6)
M305 P0 T100000 B4138 R4700 S"Chamber"          ; Set thermistor + ADC parameters for heater 0
M143 H0 S240                                    ; Set temperature limit for heater 0 to 240C
M305 P1 X200    S"Model"                        ; Configure thermocouple for heater 1
M143 H1 S430                                    ; Set temperature limit for heater 1 to 430C
;M305 P2 T100000 B4138 R4700 S"Support"         ; Configure Thermistor + ADC parameters for heater 2
;M143 H2 S320                                   ; Set temperature limit for heater 2 to 290°C    
M305 P2 X201    S"Support"                      ; Configure thermocouple for heater 2
M143 H2 S430                                    ; Set temperature limit for heater 2 to 430C
M307 H1 A225.2 C128.7 D4.1 V24.5 S1.0 B0        ; Set PID parameters for Extruder Heater 1 model: gain 952.0, time constant 389.2, dead time 5.2, max PWM 0.30, calibration voltage 24.3, mode PID, inverted no, frequency default
M307 H2 A225.2 C128.7 D4.1 V24.5 S1.0 B0        ; set preliminary PID for support extruder
                                                ; 12V Hotend autotune 390° while 212° chamber Heater 1 model: gain 495.4, time constant 164.7, dead time 2.9, max PWM 0.50, calibration voltage 23.1, 
                                                ; 24V CTC Heater 1 model: gain 225.2, time constant 128.7, dead time 3.4, max PWM 1.00, calibration voltage 24.5
;M307 H2 A468.7 C131.8 D4.3 V24.5 S0.3 B0       ; Heater 2 model: gain 468.7, time constant 131.8, dead time 4.3, max PWM 0.30, calibration voltage 24.5, (12v heizpatrone im alu block)

; Fans
M106 P0 S0.3 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 S"Model" D0 H1                          ; 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
M563 P1 S"Support" D1 H2                        ; Define tool 1
G10 P1 X24.6 Y1.22 Z-1.3                       ; Set tool 1 axis offsets
G10 P1 R0 S0                                    ; Set initial tool 1 active and standby temperatures to 0C

; Automatic saving after power loss is not enabled

; Custom settings are not configured

; Miscellaneous
T0                                              ; Select first tool

Is 360 steps/mm on the Y really that bad?
Thanks for looking

Phaedrux

What is your Y axis? Why are you using 1x microstepping?

These are external drivers?Also, you're on 2.03. Have you tested with 2.05.1?

dc42

That hiccup count does look very high.

I did some work on supporting higher step rates in RRF 3.01 and I plan to do more in RRF 3.02. I'm not sure how the maximum step rate RRF 2.05.1 compares with RRF 2.03 that you are running.

NitroFreak

@Phaedrux said in Hiccups everywhere:

What is your Y axis? Why are you using 1x microstepping?

These are external drivers? Also, you're on 2.03. Have you tested with 2.05.1?

Yes, it´s an external servo drive that i drive with the expansion board, it has the "microstepping" onboard.
Does that mess with the duet?

The speeds aren´t extraordinarily high, usually 60mm/s printspeeds and 120mm/s travels.
Only thing that is extraordinary is that i am using two X steppers using two stepper drivers on the board, but only in x16 with interpolation?

dc42

@NitroFreak said in Hiccups everywhere:

M569 P5 S0 T8:8:8:8 ; Drive 5 minimum step pulse timing 3 microseconds (JMC servo minimum 2.5 microseconds)

I didn't notice that line in your config.g before. Slow step timings like that will reduce the maximum step rate. I suggest you reduce microstepping on those external drivers, and hence the steps/mm on the Y axis.

Do you really need 8 microseconds step timing, when the comment says 2.5 is the minimum?

NitroFreak

@dc42 said in Hiccups everywhere:

@NitroFreak said in Hiccups everywhere:

M569 P5 S0 T8:8:8:8 ; Drive 5 minimum step pulse timing 3 microseconds (JMC servo minimum 2.5 microseconds)

I didn't notice that line in your config.g before. Slow step timings like that will reduce the maximum step rate. I suggest you reduce microstepping on those external drivers, and hence the steps/mm on the Y axis.

Do you really need 8 microseconds step timing, when the comment says 2.5 is the minimum?

You´re right, i didn´t think about that. I had to increase that because from a certain threshold the servo used to miss steps after a direction change i believe, even when the manual said minimum 2.5. the result looked like this. It´s supposed to be a straight cylinder. I may need to try just increasing the setup timing, i just increased them all until it worked

NitroFreak

@dc42
I am pleased to report that it works, i dropped the steps/mm from 360 to 144 and the timings from T8:8:8:8 to T4:4:8:8 and it works much better now. I kept the 8 millisecond direction setup and hold time because i feel this is what caused the even layer shift at high speeds.

Thanks again!