Duet2 V1.04. Motor not energized but steps seen on oscilloscope

MoczikGabor

Does the extruder motor move?

If you can not heat up, use "M302 S1" to allow cold extrusion.

T0
M302 S1
M83
G1 E+100 F500

MoczikGabor

HW check ideas, since you have an oscilloscope:

Do any signal present on TMC's OA1 OA2 OB1 OB2 pins? (during move)
What can you measure between BRA/BRB and GND? 1. Measure resistance without power, 2. check on scope during move.
Between SRA/SRB and GND?
You verified that the TMC's get 24V and the STEP signals. This is where everything gets interesting... But does them get GND?

dc42

Please upgrade your firmware to version 2.02, which will provide better diagnostics.
Please verify that you have continuity from the Duet motor headers right through to your motors. With power off but motors connected, use your multimeter to measure the resistance between the two pins at one end of the X motor connector, by touching the probes on the motor connector spills on the underside of the Duet. It should read a few ohms, the resistance of one motor phase. Then check the resistance between the two pins at the other end of the X motor connector. Likewise you should get a few ohms resistance between. There should be on continuity between any pair of pins on the X motor connector that are not next to each other, or between the two middle pins.

A Former User

@veti
I determined the phases of my motors using an ohmmeter to find the low resistance pairs.

Also, it corresponded to the motor manufacturer's spec sheet.

A Former User

@t3p3tony
The ENN pin is always low.

A Former User

@moczikgabor
No, the motor doesn't energize or move on either E0 or E1.
I used the commands you described, thank you:

T0
M302 S1
M83
G1 E+100 F500

dc42

The only explanation I can think of is that the SPI MOSI pin from the MCU isn't getting to the TMC2660 drivers, so they are not getting programmed. But it must have been working when the Duet was tested. Assuming it's a genuine Duet, I'm happy to approve a warranty replacement if you want to try another one.

A Former User

@dc42
I updated the firmware to 2.02, no change.

I purchased my Duet from Matter Hackers, so I believe it should be genuine.

Please direct me as to how to get a warranty replacement.

Thank you.

T3P3Tony

@vbiondo Matterhackers are one of our US resellers so it will be genuine. Contact their support and reference this thread. They should point you to a warranty return form to capture the details.

A Former User

@t3p3tony

Thank you. I have an additional question.

Can I purchase tech support going forward?

I am using this card to develop a delta machine for a manufacturing application and it is worth it for me to pay to get more expedient answers when needed.

Thank you.

A Former User

@dc42
I have received the new Duet2 pcb rev 1.04B and still no motor energization when a motor is attached on any axis.

I have checked the motor on another system and it is fine.

The motor voltage supply is set at 20 volts.

I did not change the configuration that the card came with, it says "DuetTest" in the browser interface.

I am supplying 5 volts via the USB cable.

Here is the result of an M122 command:

m122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.02(RTOS) running on Duet WiFi 1.02 or later
Board ID: 08DGM-917DA-G4MS8-6JKD6-3S46T-9TTZA
Used output buffers: 1 of 20 (11 max)
=== RTOS ===
Static ram: 25524
Dynamic ram: 98908 of which 0 recycled
Exception stack ram used: 352
Never used ram: 6288
Tasks: NETWORK(ready,648) HEAT(blocked,872) MAIN(running,3776) IDLE(ready,200)
Owned mutexes:
=== Platform ===
Last reset 00:15:38 ago, cause: software
Last software reset at 2019-05-30 16:21, reason: User, spinning module GCodes, available RAM 6336 bytes (slot 0)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
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 35.0, current 35.3, max 35.4
Supply voltage: min 20.3, current 20.4, max 20.4, 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: 2019-05-30 16:36:58
Cache data hit count 3482319139
Slowest loop: 1.11ms; fastest: 0.08ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0
=== Move ===
Hiccups: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm: 240, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 0, completed moves: 0
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 1 in use
Movement lock held by null
http is doing "M577 X S0 " in state(s) 0 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is ready with "m122" 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: 202.68ms; 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 5
WiFi firmware version 1.22
WiFi MAC address 80:7d:3a:3f:f3:eb
WiFi Vcc 3.34, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 28992
WiFi IP address 192.168.1.84
WiFi signal strength -55dBm, reconnections 0, sleep mode modem
Socket states: 0 0 0 0 0 0 0 0
ok

A Former User

@dc42
I'm making some progress. When I uploaded my sys folder containing my configuration files using the uploader in the Duet web interface the folder ended up in the gcode folder.

I have now used an external SD card writer to move the sys folder to the root and am getting some motor current and can home the axes.

Thank you.