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I have a component that uses atexit. On my system this works fine to do something when i close linuxcnc. All other attemps failed.



import atexit


def exit():
    some code...
atexit.register(exit)

 

Another AI leading you up the garden path. An IP address is not required on the Ethercat NIC and without a IP address, there is no ablity to use DNS.

Please read the installing Ethercat sticky and follow what it says. Installing Ethercat becomes easy.

This has nothing to do with ethercat. 2.9.10  Debs think is available on GitHub releases but you can compile it yourself

NO, do not touch the wiring if it works with Axis GUI.
Upload the config files here so we can have a look, the working and non working ones.

your script might be able to look for linuxcnc's rtapi thread (ie the servo thread) and exit if its not found.
AI seems to think it's possible.

I look forward to testing that, but my tiny script does what I need right now - except exit.  I had hoped to find something in the docs about detecting shutdown, but did not.  It seems a strange oversight, unless you assume linuxcnc never exits until the machine shuts off...
 

I too have started a journey through EtherCAT.  I am using an EK1100, EL1008, & EL2008.  Along with a LiChaun CL57E-4A closed loop driver.  I struggled for some time with getting the driver to go into OP mode.  If you are at all familiar with VS Code it can be an invaluable tool when used with Copilot.  I was able to use AI to build my entire configuration.  The problem I had turned out to be how my ethernet card was configured.  The key was to disable DNS on the ethernet card.  DNS does not play well with EtherCAT.  Once I did that everything just worked.  All the configuration file built by using Copilot.  If you find that your driver is getting an error when it tries to change to OP mode.  Try disabling DNS on your network card.

Hope this helps.

 

I have had really good luck with compac/hp 8300 sff (3rd gen i5 4 core)

sam

PS - my plasma is running a rpi 5...

www.youtube.com/shorts/9-y316bJrGk

Since I am a linuxcnc newb I hope that the below pic is what you are asking for.
I have CL57Y drivers , currently they are wired to: PU+ PU- DR+ DR- . The MF+ (enabled +) and MF- (enabled -) are not connected. 
If they do need to be connected do I connect them from MF+ to  the +5v and from MF- to GND on the TB2 terminal?
Thanks

This is not good. I need working LinuxCNC EtherCAT master very soon. How can I compile this? Maybe install older version of LinuxCNC?

See: linuxcnc.org/2026/07/03/2.9.9-Withdrawn/

Another error after trying to "sudo apt upgrade".

Error: Failed to fetch www.linuxcnc.org/dists/trixie/2.9-uspace...pace_2.9.9_amd64.deb  404  Not Found [IP: 69.163.143.134 443]
Error: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Why is that happening?

The good thing is that I managed to install the ethercat. But I used another computer with UEFI for the purpose.

Thank you very much in advance!

 

Sascha wrote:

Check the encoder resolution in the software. Mine were advertised as 24-bit and there are 23-bit. I have the L8EC drive and ACM2 motors.

Thanks, this is indeed true, they are 23 bit optical. 

Sounds like a great little project, keep up the good work and keep us posted.

Sure thing, take a look here:

forum.linuxcnc.org/plasma-laser/58942-fa...ing-scanning-project

Thanks!
Jeff