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Do you have some Arduino code to share ?

 Seems not very common.
I have seen some grinders with moving column, but cannot find a milling machine.
... wondering why...
I found one example picture for a milling machine. I think this is about the rotary table, allowing to double the y reach by rotating the workpiece and then the overhang does not have to be as big?
 

Best if you show
the xml and hal files, the error messages and some lines around them, and the last say 30 lines of the syslog.

Show the content here it's not many lines.

how do i test this? (and fix if broken)

Is there in existence CNC machines with such axes placement. If yes how this types of machines called?
Red -> X, Green -> Y, Blue -> Z 
Pros:
Clean working area, no way covers (only on vertical wall)
Easy way covers construction (plain sheet of metal)
Possibility to put long vertical work material (if to remove table or use other type of attachment)
4 and 5 axis could be added for rotating (smaller table or chuck)

Cons:
Please share your opinion

I didnt see that either, its what i got with my last and frustraded way by using AI.
Before I did the "Thing" above I had this as .xml but that didnt work, too

I have started by doing it exactly like this : 

It could be interesting to use halscope and record pos-cmd and pos-fb around the Machine on event.
I think your analysis is right. I have a similar problem. I zero the encoder's values before starting linuxcnc.
My issue is related to stepper motors when energized, so not necessarily same for you.

 

Ok, changing the Home_Absolute_encoder=2 to =0, no change. #'d it out altogether, still no change.
What seems to be happening or at least what I can see is that when lcnc starts up it's loading the stored g54 values from linuxcnc.var as the current machine possition but then it's zeroing out the dro a few seconds later. If the machine is enabled it's actually trying to make that move to 0 rather than just the dro zeroing out.
I've no idea at this point. Maybe an actual homing routine will sort it out. At least for now I know that if I wait a few seconds before enabling the machine I won't snap any motor shafts.

What's that? Never seen that before.
Anyway that won't work with lcec_conf, it requires a file in xml format.

Easiest way, I think, is to take the output of the command "lcec_configgen" and put that
in the ethercat-conf.xml file and use that as input to lcec-conf.

Example here to show the structure and syntax of things
github.com/dbraun1981/hal-cia402/tree/main/example
Reference to lcec and lcec_conf
github.com/linuxcnc-ethercat/linuxcnc-ethercat
 

Okay, so one drive is for a spindle?
I made an adaptation to the cia402 component for the driver to work in PV (Profile velocity) mode
which is better suited to run as spindle.
Check out here github.com/MetalMusings/cia402pv
This person made it work after a while forum.linuxcnc.org/38-general-linuxcnc-q...tor-as-spindle-motor
 

Hallo zusammen , ich bin seid ca. 4 Wochen der stolze Besitzer einer Maho 500 W4 , es ist die selbe wie in dem User DoWerna jedoch haben sich bei dem Eintrag nicht alle meine fragen geklärt , zum einen wie ist das mit den Mesa karten gibt es unterschiede zwischen PCIe oder über Lan Kabel bzw. was ist besser oder besser erweiterbar oder eventuell günstiger und wie ist das mit dem Bedienpult welches ich selber bauen möchte ? ich habe mir die benötigten Taster zusammengeschrieben und möchte das auch in der Art machen mit Gmoccapy und dachte an die selbe Bedienart wie bei den Kunzmann 3/4 Maschinen dass dort also noch ein Handrad mit Achsauswahl hinzugefügt werden soll (Haidenhain Steuerung). ich bin kein Elektroniker sondern Industriemechaniker und muss mich dort in das Thema selber hineinarbeiten deswegen wäre die ein oder andere Hilfe gerade was die Mesa karten angeht nicht so schlecht  ich mache gerade einen Maschinenbautechniker und kenne mich dadurch schon ein wenig mit SPS aus aber manche Sachen kann man dort übertragen aber gerade das mit diesen Signalen bzw. von Haidenhain Glasmessstäben zu denen die die Mesa versteht ist für mich Neuland . gruß Tom

Looks like it's going to be the Home_absolute_encoder=2
I should have said that my motors don't have absolute encoders.

Ok so I've found what's happening but not why. Video below shows it in detail.
A few seconds after Lcnc loads the, I guess, current possition of the machine, the possition it starts up in lets say, is changing. I can see it jump from one position to the new one. Sometimes it's just the Z that jumps, sometimes it's the z and the y.
I hadn't noticed it before as I was so busy watching the motors. If I enable the machine before the current position in lcnc updates it tries to move to that new position. Again, easier to show it than describe it. It's pretty clear in the video, linked here

Could this be something to do with absolute encoders? The original machine that I'm using the files from had absolute encoders. Is there something saving the machine position on shutdown or something like that?


 

The reference to the forum post was helpful. I now have the basic framework up and running. The servo, which is supposed to act as a spindle, is working to the point that it can be controlled with M commands, and the stepper driver (one driver for two closed-loop steppers) is also working. I've attached the files. More to come.

de.aliexpress.com/item/1005008271228331....gatewayAdapt=glo2deu

de.aliexpress.com/item/1005010098887410....gatewayAdapt=glo2deu