Firmware 3.4.5 axis mapping bug

dc42

@kazolar if this issue is occurring on a Duet 3 Mini5+, please see https://forum.duet3d.com/post/302699.

kazolar

@dc42 I finally got around to re-testing this. I downgraded to 3.4.2 (that was the major release I found quickly with all the web archives)
The problem went away, I was re-calibrating the machine and switching to 9mm belts and to mechanical switches to replace optical switches (my own experiment trying to find repeatable calibration, unrelated to the issue), so took a while to test again. The calibration process is adjusting UVWA axis home positions to match XY coordinate space. Now all is put back together. Am on 3.4.2 -- all works fine. I did a couple of rounds of homing A and then re-issuing G1 command with X Y coordinate for the toolhead A is mapped to, and it works properly. My config is duet3 6HC, 2 EXP3HC, and 4 toolboards. A axis is on the 1st expansion board. W axis is on the 2nd expansion board, 3.4.5 had no issue with UVW axis, but had a problem with A axis. 3.4.2 works fine now.

T3P3Tony

@kazolar It would be helpful to us if you could try with the updated 3.4.5 version that dc42 described in this thread:

https://forum.duet3d.com/topic/30814/homing-issues-with-rrf-3-4-5-on-duet-3-mini?_=1673273623319

It would be good to confirm that the issue in 3.4.5 is resolved now for you. Thanks!

kazolar

@T3P3Tony sorry it took me a while to test, but the problem persists with the updated 3.4.5
Command is switch to tool 4 --
T3
issue G1
G1 X300 Y300 -- toolhead goes to the correct location
G28 A -- home the assigned X
toolhead homes -- this is not the issue
G1 X300 Y300 -- toolhead doesn't come back to X300 -- this is the problem

PS I downgraded to 3.4.4 -- Same issue.
I kept going back -- I ended up going back to 3.4.0 until the problem went away

dc42

@kazolar you seem to have inconsistent results, you reported first tat reverting to 3.4.2 solved the problem and later that you had to revert to 3.4.0.

I suspect this issue has nothing to do with firmware versions, but instead depends on conditions when you power up the printer. Please use M122 B# to get the firmware and bootloader details of each expansion board, where # is the CAN address of the board. If any of the expansion boards have old bootloader versions, I suggest you update them to version 2.4.

kazolar

@dc42 yes bootloader is 2.3 -- I expected that it would get updated during the various firmware updates I preformed, didn't even occur to check. Will update now and try latest firmware

kazolar

@dc42 I did the full test during lunch. Can confirm now I am on the 2.4 bootloader.
Here is the gcode

G28
G32
T0
G1 X300 Y300 F20000
T3
G1 X300 Y300 F20000
G28 A
G1 X300 Y300 F20000

Last line is where A doesn't go to 300 it makes a little squeak and says it went there. Note A in all cases in DWC shows home position -34.7, even when it's being operated by T3.
3.4.5 didn't work for me, I went backwards in order 3.4.4, 3.4.2, 3.4.0 -- power cycling after each complete flash. Only 3.4.0 worked and the last gcode line moved the toolhead to X300.
I tried upgrading from 3.4.0 to 3.4.2 -- and same result, last line didn't work. I reverted to 3.4.0. And it works again.

here is homea.g in case it's remotely helpful
G91
G1 A-700 F6000 H1
G1 A3 F500 H2
G1 A-10 F300 H1
G1 A0.2 F3000 H2
G90

here are tool definitions
M563 P0 D0 H1 F0 ; Define tool 0 to use extruder drive 0 and heater 1
M563 P1 D1 H2 X4 F2
M563 P2 D2 H3 Y3 X5 F4
M563 P3 D3 H4 Y3 X6 F6

note this is only a problem with A axis, UVW which represent my other mapped axis do not have this issue -- so in the gcode above I can replace T3 with T1 or T2 and replace A with U V or W and the last line will work fine.

kazolar

@dc42 I installed 3.5 beta 2. The problem appears to have been fixed.

dc42

@kazolar thanks for confirming this.

kazolar

@dc42 hopefully you know what changes made it work now.