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  • kor
  • kor
20 Nov 2025 11:55

Ethercat installation from repositories - how to step by step

Category: EtherCAT

That seems to be the problem
/etc/apt/sources.list contains only one line and i guess it wants the DVD i used to install it:
deb cdrom:[Debian GNU/Linux 12 _Bookworm_ - Official Snapshot amd64 LIVE/INSTALL Binary 20250127-13:30]/ bookworm contrib main non-free non-free-firmware
  • DemonClaW
  • DemonClaW
20 Nov 2025 11:01

Beckhoff Problem with Communication (TwinCAT, LinuxCNC)

Category: EtherCAT

These would be the new .hal and .xml file + the error code i got after starting
I made this data like the video told me to, expect the card config but im using supported base cards so i just changed the names for them
  • Murphy
  • Murphy
20 Nov 2025 10:51 - 20 Nov 2025 20:13

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Anyone else able to get a spindle encoder working In CSS mode with the RT1052?
  • slowpoke
  • slowpoke
20 Nov 2025 10:29

Used Laptops tested with LinuxCNC and Mesa Ethernet boards

Category: Computers and Hardware

Lenovo ThinkPad Yoga 370, Intel Core i7 7600U, 16GB RAM, 512GB NVME
-
-TouchScreen as it is laptop/tablet combo,
-no RJ45 connector,
-tested using a USB-A to GigaBit Ethernet adapter
-LinuxCNC 2.10 on Linux Mint 22 with RT kernel 6.10.12, Mesa 7i92 on a production machine,
-No GRUB changes, no isolcpus nor anything else, no BIOS changes
-complaints about latency whenever sound is used, but does not loose or drop connection,
==disabling hyperthreading and Intel AMT gets rid the warnings, but still rarely it does complain
-Plugging power does cause latency warning, but machine continues to work, and uplugging does not.
-isolcpus=3 and =2,3 did not help
-disabling TPM does NOT help much
==disabling SGX and virtualization DOES help a lot,
-no more warnings even playing videos during running of LinuxCNC and doing other stuff,
-did not test youtube as WiFi does not work with this kernel
-no more issues with servo period 1mil at all, except when plugging power
Video:
www.youtube.com/shorts/__zn74D7OyM
 


I'm starting my third LinuxCNC build / conversion.

For my second conversion I used a 5th generation Yoga 15 (i5 and no Ethernet port), however this flavor of Yoga has the Lenovo OneLink connector and I picked up a Lenovo dock that has amongst other things a RJ45 Ethernet port. I'm using a Mesa 7i96 This all works really well. Sometime on first power-up I get a latency error, but never once I'm up and running so from a practical perspective it all works perfectly.

So I thought I would try another Yoga for build #3. This one is a bit newer 8th generation so it does not have the OneLink port but it does have  2 x USB-C 3.1 Gen 1 USB ports. So I now need to find a suitable USB-C dock or Ethernet adapter. I would prefer a doc for all the extra ports but can live with just an Ethernet adapter. I just want to avoid getting one that may not be up to the task of communicating with the Mesa (I will probably get another 7i96s).

Any suggestions for a dock or adapter?
  • vre
  • vre
20 Nov 2025 10:11
Replied by vre on topic Injection molding

Injection molding

Category: CNC Machines

Do you have some Arduino code to share ?
  • timo
  • timo
20 Nov 2025 09:57 - 20 Nov 2025 10:06
Replied by timo on topic Need your opinion on Axes placement.

Need your opinion on Axes placement.

Category: CNC Machines

 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?
 
  • Hakan
  • Hakan
20 Nov 2025 09:43

Beckhoff Problem with Communication (TwinCAT, LinuxCNC)

Category: EtherCAT

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.
  • Hakan
  • Hakan
20 Nov 2025 09:40
  • kor
  • kor
20 Nov 2025 09:37 - 20 Nov 2025 09:37
  • TimP
  • TimP
20 Nov 2025 09:35

Need your opinion on Axes placement.

Category: CNC Machines

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
  • DemonClaW
  • DemonClaW
20 Nov 2025 09:34 - 20 Nov 2025 09:37

Beckhoff Problem with Communication (TwinCAT, LinuxCNC)

Category: EtherCAT

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 : 
  • Hakan
  • Hakan
20 Nov 2025 09:07

Sudden motor jump after machine enable. Delta ASDA e3 drives and EtherCAT

Category: EtherCAT

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.

 
  • SPH
  • SPH's Avatar
20 Nov 2025 08:47

Sudden motor jump after machine enable. Delta ASDA e3 drives and EtherCAT

Category: EtherCAT

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.
  • Hakan
  • Hakan
20 Nov 2025 08:24

Beckhoff Problem with Communication (TwinCAT, LinuxCNC)

Category: EtherCAT

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
 
  • Hakan
  • Hakan
20 Nov 2025 08:17

EtherCAT + CiA402 Servo: OP state reached, but axis won’t move (only Following E

Category: General LinuxCNC Questions

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
 
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