RRF3.01-RC2 CoreXY Movement differences

[Dr_Ju_Ju]

Nothing has changed physically from the RRF2 system to this RRF3.01 system, all the wiring is correct & working (yes I have tested, I'm an electronics engineer so know what I'm doing), & apart from these weird moving issues, everything else appears to be working ok, i.e. heaters & fans \ lights etc. are all configured(ish) & working with just some minor tweaks needed e.g. PID tuning, speeding things up etc...

If I physically move the head to the 'opposite' motion ends, (motors powered off) then home that axis, it behaves as I would expect, i.e. travels in a straight line to its relative homing end-stop. Which for a CoreXY, in its simplest form, the motors (both), are being driven in the correct direction and working as expected !!

[droftarts]

@Dr_Ju_Ju Long shot; what version of RRF2 were you on? There was a change in the default direction of one axis a looooong time ago, can’t remember exactly when.

Ian

[Dr_Ju_Ju]

I was on the latest 2.05.1 \ DWC 2.0.7 on Duet Ethernet 1.02 or later
Board ID: 08DGM-95BNL-MGPSJ-6J1F2-3SD6L-9JZHX

I'm interested in the new conditional stuff, so went to the latest RC, to at least try & get things going....

Julian

[deckingman]

@droftarts said in RRF3.01-RC2 CoreXY Movement differences:

@Dr_Ju_Ju Long shot; what version of RRF2 were you on? There was a change in the default direction of one axis a looooong time ago, can’t remember exactly when.

Ian

@droftarts For info, that was RRF 1.19 whereby on a CoreXY, the direction of the Y axis (beta) motor changed.

[dc42]

@Dr_Ju_Ju said in RRF3.01-RC2 CoreXY Movement differences:

If I make any changes to the M574 settings for X\Y, I'm then unable to home an axis with an
"G32 X\Y
Error: Failed to enable endstops"

Try again, this is working for other people. You need M584 Y2 not M584 Y1 M574 Y2 not M574 Y1.

[Dr_Ju_Ju]

@dc42 said in RRF3.01-RC2 CoreXY Movement differences:

M584 Y2 not M584 Y1

Now I'm really confused, Why would I need Y2 in M584, as that setting came from the web configurator, & other examples I've seen ???

Julian

[dc42]

Sorry, I meant M574.

[Nuramori]

You commented out the number/maxima and also had the y range backwards vs your old one.

;M208 X0:300 Y300:0 Z0:300 ; Set axis minima:maxima

The y should be Y0:300 not Y300:0.

[Dr_Ju_Ju]

Thank you David, I now have movement as I'd expect'ish, even if the Y axis moves 'negatively', which I suspect will be corrected when I update the axis limits....

Julian

[dc42]

Which version of RRF2 were you using before you upgraded to RRF3?

[Dr_Ju_Ju]

David,

@Dr_Ju_Ju said in RRF3.01-RC2 CoreXY Movement differences:

I was on the latest 2.05.1 \ DWC 2.0.7 on Duet Ethernet 1.02 or later
Board ID: 08DGM-95BNL-MGPSJ-6J1F2-3SD6L-9JZHX

& yes Nuramori, I was playing with the axis limits to try & get things working in the right direction...