IDEX Head crash when doing G29 with U axis

kuon

I am using 3.5 beta 3.

I want to do manual probing using head on U axis.

I did

M558 P0 H2 ; manual probe
M557 U40:315 Y10:270 P3                                     ; manual probe grid

When I do G29 then head goes to the the right point (U40 Y10), and I am prompted for manual Z adjustment. But when I confirm the first Z point, the head will goes towards U-xxx and crash into other head. There is correct Y movement when the head is moving after first point.

I did empty all my txxx.g files in case.

I am not fully sure this is a new thing from beta 3, but I am doing some maintenance on my toolhead 0, and I wanted to probe the bed using toolhead 1 as a workaround.

kuon

If I do T1 before probing it works, but it got me confused because I thought M557 with U parameter would use correct head.

I still think the head crashing is a bug.

Proschi3D

@kuon Can it be possible that something is wrong with your tool change macro? What happens when you change from t0 to t1 and vice versa? Can you post your config files ?

kuon

@Proschi78 My tool macro are all empty.

Proschi3D

@kuon I think that's the problem. When a tool changes or becomes inactive, it doesn't know where to go

kuon

@Proschi78 Yeah, but the point is that it shouldn't matter.

I hope all axis, at this point no tool is selected.

I expect G29 to be able to probe using the U axis.

Only the first point work, then the head goes crashing on X carriage.

Proschi3D

@kuon Can it be that he makes t1 inactive after confirming, or even automatically switches to t0?

kuon

@Proschi78 No, because if I select T1 before doing G29 it works.

Proschi3D

@kuon Yes I read that. But if t1 is not selected before the g29 command, does it then switch to t0 or become inactive after the first acknowledge ?

kuon

@Proschi78 No, G29 doesn't affect selected tool.

Proschi3D

@kuon do you have a mesh.g ?

kuon

@Proschi78 No. mesh.g doesn't exist.

Proschi3D

@kuon I think if there is a mesh.g where the tool is called first, the g29 command will work

Proschi3D

@kuon did it work now

kuon

@Proschi78 As I said, if I select the tool before doing G29 so, T1 + G29 it works. But I think it should work without T1 as I specified U axis in M557. Also it should not go crash in other tool. Perhaps @dc42 can chime in. I'd be happy to try to help debug the issue.

Proschi3D

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