Y axis moving when trying to move Z axis with multiple Z motors

[droftarts]

Try defining those connected to main board without 0. on front.

Ian

[HWW]

@droftarts No change in the result from removing the explicit board number, I also went ahead and threw in my other test of assigning all the Z motors to the Y axis to confirm that entering the mapping into the console was changing things and you can see the strange result from that as well. The Y axis is mapped correctly but both Z and E are incorrect.

[droftarts]

Can you try mapping all drives individually in order, eg
M584 X0.0 Y0.1 Z0.2 U0.3 V0.4 W0.5 A1.0 B1.1 C1.2 P9
And see what it reports?

The only other thing I notice is that in the RRF 3 overview notes, a comma is used to delimit the second board. Might be a typo, though? https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_M584

Ian

[HWW]

@droftarts Assigning them all individually like that they mapped correctly, the drive map report matched the mapping command.

I played around with it a bit more and I think whats happening has something to do with having multiple motors on two axis

I tried M584 X0.0 Y0.1:0.2 Z0.3 U0.4 V0.5 W1.0 A1.1 B1.2 P8 and that mapped correctly

However when I tried M584 X0.0 Y0.1:0.2 Z0.3:0.4 U0.5 V1.0 W1.1 A1.2 P7

the resulting map was X0.0 Y0.1:0.2 Z0.1:0.2 U0.5 V1.0 W1.1 A1.2

Also in all cases the extruders were mapped to 0:0 and 0:1 which I think is a default value since no E parameter was in the mapping

[HWW]

Yeah look at this one

M584 X0.0:0.1 Y0.2:0.3 Z0.4:0.5 E1.0:1.1

results in a reported drive map of
X0.0:0.1 Y0.0:0.1 Z0.0:0.1 E0.0:0.1

[Danal]

Yep. I just tried two axis with two motors each. Reproduced the issue.

12/21/2019, 7:02:51 PM	M584 X0.0 Y0.1:0.3 Z0.4:0.5 U0.2 E0.3:0.4
12/21/2019, 7:02:58 PM	M584
Driver assignments: X0.0 Y0.1:0.3 Z0.1:0.3 U0.2 E0.1:0.3, 4 axes visible

Z should be 4 5, instead it is repeat of Y's 1 3. E is wrong as well, again, a repeat of 1 3

Interestingly enough, it is OK to have multiple motors on Z and E. This is my day-to-day configuration on a tool changer:

12/21/2019, 7:06:11 PM	M584
Driver assignments: X0.0 Y0.1 Z0.3:0.4:0.5 U0.2 E1.0:1.1, 4 axes visible

[droftarts]

So, bug? One for @dc42? Thanks for getting to the bottom of it!

Ian

[Danal]

Certainly looks like a bug.

And I'm running what I believe to be the very latest:

Board: Duet 3 MB6HC (MB6HC)
DSF Version: 1.1.0.5
Firmware: RepRapFirmware for Duet 3 MB6HC v0.6 or 1.0 3.0beta12+1 (2019-12-02b2)

[Danal]

Same thing happens if X has more than one motor, it "overlays" all later multimotor axis mappings.

12/21/2019, 7:12:02 PM	M584 X0.0:0.3 Y0.1 Z0.4:0.5 U0.2 E1.0:1.1
12/21/2019, 7:12:08 PM	M584
Driver assignments: X0.0:0.3 Y0.1 Z0.0:0.3 U0.2 E0.0:0.3, 4 axes visible

TRIPLE motor Z seems to work fine:

12/21/2019, 7:13:29 PM	M584 X0.0 Y0.1 Z0.3:0.4:0.5 U0.2 E1.0:1.1
12/21/2019, 7:13:42 PM	M584
Driver assignments: X0.0 Y0.1 Z0.3:0.4:0.5 U0.2 E0.3:0.4, 4 axes visible

However, DUAL motor Z overlays E:

12/21/2019, 7:14:39 PM	M584 X0.0 Y0.1 Z0.4:0.5 U0.2 E1.0:1.1
12/21/2019, 7:14:45 PM	M584
Driver assignments: X0.0 Y0.1 Z0.4:0.5 U0.2 E0.4:0.5, 4 axes visible

[HWW]

@Danal Triple motor Z also overwrote the E mapping

My best guess is that whatever values are getting used for multi motor mapping are not reset or filled or something between cycles of the code loop running

[Danal]

Yep, and it looks like it is the "single line parser" loop. Specifying each axis on a separate line yields proper results. For example, with this sequence, E never gets overlaid:

12/21/2019, 7:17:40 PM	M584
Driver assignments: X0.0 Y0.1 Z0.3:0.4:0.5 U0.2 E1.0:1.1, 4 axes visible
12/21/2019, 7:17:45 PM	M584 X0.0
12/21/2019, 7:17:58 PM	M584 Y0.1:0.3
12/21/2019, 7:18:16 PM	M584
Driver assignments: X0.0 Y0.1:0.3 Z0.3:0.4:0.5 U0.2 E1.0:1.1, 4 axes visible
12/21/2019, 7:18:34 PM	M584 Z0.4:0.5
12/21/2019, 7:18:41 PM	M584
Driver assignments: X0.0 Y0.1:0.3 Z0.4:0.5 U0.2 E1.0:1.1, 4 axes visible
12/21/2019, 7:18:54 PM	M584 E1.0:1.1
12/21/2019, 7:18:59 PM	M584
Driver assignments: X0.0 Y0.1:0.3 Z0.4:0.5 U0.2 E1.0:1.1, 4 axes visible

This also provides a bypass until this is fixed.

[HWW]

@Danal A workaround solution until things get a proper fix!! Fantastic. I was just about to ask what your day to day config looks like since in the example from before it E got overwritten but you had a working readout from your day to day.

[Danal]

@HWW said in Y axis moving when trying to move Z axis with multiple Z motors:

@Danal Triple motor Z also overwrote the E mapping

You are correct!!!

And I just looked in my actual config.g, and I'd separated the extruders because this is a toolchanger and I'm adding tools one at a time:

; Axis to driver mapping
M584 X0 Y1 U2 Z3:4:5        ; X and Y for CoreXY.  U for toolchanger lock. Z has three drivers for kinematic bed suspension. 
M584 E1.0:1.1               ; Extruders for four tools. 

Man, a bullet dodged a few weeks back. That would have been VERY frustrating when I was trying to figure out a bunch of other stuff as well...!

[HWW]

I have added this as an issue to the github tracker
https://github.com/dc42/RepRapFirmware/issues/345

HWW-GS created this issue in dc42/RepRapFirmware

closed M584 Multi Axis/Motor Mapping Error #345

[dc42]

@HWW said in Y axis moving when trying to move Z axis with multiple Z motors:

I have added this as an issue to the github tracker
https://github.com/dc42/RepRapFirmware/issues/345

It's probably a DSF issue not a RRF issue, because it doesn't happen when the Duet 3 is run in standalone mode.

[dc42]

It was an issue in RRF code that is only used when communicating with the SBC. Will be fixed in RRF3.0RC2.