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  • Spezidrohne
29 Mar 2026 12:49
Replied by Spezidrohne on topic Ethercat Setup help needed for beginner
I can see the number changing on the DRO when i turn the shaft of the motor, i guess there is some setting missing on the pitch/turns per mm ?
  • Spezidrohne
29 Mar 2026 12:45
Replied by Spezidrohne on topic Ethercat Setup help needed for beginner
I did that, but it didn't work. Then remebered i am in mm. And i changed axis.ini and not axis_mm.ini. Commented out everything except the cia halfile in the mm file, and it worked. I can now drive the servo from the gui. But i get an immediate following error on the joint.
  • Jaragua
29 Mar 2026 12:34
Tem que colocar abaixo do link do código mais essas linhas:

net tool-prepare iocontrol.0.tool-prepare iocontrol.0.tool-prepared
  • grandixximo
29 Mar 2026 12:25
Replied by grandixximo on topic Ethercat Setup help needed for beginner
It's because it is loaded twice, and once it is from coresim.hal
you will see loadrt [KINS]KINEMATICS or loadrt trivkins or something similar in your hal, that conflicts with the same thing that is written in coresim,hal you can only load kinematics once
and you cannot modify that, it's in the libraries, you can remove the
HALFILE = core_sim.hal
from your ini file
Or as I advised before start from a pncconf configuration, that is more local, and it is easier to understand, as you change settings in pncconf and you see the hal changing, it is more intuitive, just take it easy, it is a steep learning curve.

 
  • Spezidrohne
29 Mar 2026 12:04
Replied by Spezidrohne on topic Ethercat Setup help needed for beginner
Tried removing all halfiles with sim, still get error trivkins already exist.
  • TAKUYA
29 Mar 2026 10:40
Replied by TAKUYA on topic Ethercat random jitter fix
im reinstalling the whole unit today.
i was trying trixie as i had to redo my host for the new cnc. But apparently is this very experimental with debian 13.

Im installing the linuxcnc 2.9.4 iso now, which should still be bookworm. then updating to 2.9.8 and installing the patch again
  • Aciera
29 Mar 2026 09:02
Replied by Aciera on topic CSS/G96 for other than X-axis?
Not sure but looking at this makes me think that CSS is indeed hard coded to the X-Axis:
github.com/LinuxCNC/linuxcnc/blob/4025bf...ontrol.c#L1918-L1922

So the only thing I can think of is to use a switchable custom kinematic that swaps the joints used for the V axis and the X axis.
  • grandixximo
29 Mar 2026 08:14
Replied by grandixximo on topic Ethercat Setup help needed for beginner
coresim will still be in the hal lib, which is symlinked and cannot be modified by user.

try to make a base configuration with pncconf, I think that is how I started.

it makes it easier to understand what is happening, also read the docs, very insightful.
  • grandixximo
29 Mar 2026 07:35
Replied by grandixximo on topic LinuxCNC S-Curve Accelerations
switching live I think is last refinement, YangYang working in separating the TP on a separate thread, switching will be refined after that.
At least spiking is gone, the fall back messages with TP1 are expected, just debugs, will be removed in next PR I think, thank you for spending the time testing.
  • grandixximo
29 Mar 2026 07:30
Replied by grandixximo on topic Ethercat random jitter fix
The phasing is done before all-op, it is about phasing with first drive DC epoch, the epoch arrives ages before all-op

Your problem is CPU and or network jitter, the symptoms your are reporting as Hakan correctly deduced, are telling us your latency is too high. 

refClockSyncCycles="1" syncToRefClock="false"

I think is your best bet.

if you still get jitter, I'd say look at your latency, cpu? kernel version? network harware? latency histogram results with a few glx gears?
isolcpus, nohz_full ?
  • Hakan
29 Mar 2026 06:53
Replied by Hakan on topic Ethercat Setup help needed for beginner
When you start lnuxcnc with sim config from the window system menu, there is a question
whether to make a copy of the config, say yes. You find it then at $HOME/linuxcnc/configs/sim_axis or similar
and your user should own the files.

In the ini file, remove all HALFILE= that has "sim" in them.
  • agrimani
29 Mar 2026 00:56 - 29 Mar 2026 06:05
Am looking for some help to get a simple ProBotix-based small-format router up and running. Our office is in Novato, CA, 30 minutes north of San Francisco.
Please post any offers here, and we take the conversation off line.
Thanks!
  • Spezidrohne
28 Mar 2026 21:46
Replied by Spezidrohne on topic Ethercat Setup help needed for beginner
Well, i tried just copying the files and the call to the halfile in axis_mm.ini and now i get the error trivkins already exist. Tried removing the x axis parts in core_sim.hal, and i cant save it, as it has root as owner. How do i Bypass this?
  • Spezidrohne
28 Mar 2026 20:58
Replied by Spezidrohne on topic Ethercat Setup help needed for beginner

In seriousness though, I find its less about beginner vs expert in CNC stuff, and more about if you are well versed in linux usage. Most of my troubles setting up were because the instructions just assume you know everything about linux already and leave a lot of critical details out.

Exactly. And i dont rallye have any prior knowledge to this in linux.
  • MaHa
28 Mar 2026 20:34
Replied by MaHa on topic G64 and G20/G21 handling
In axis i get this:

G20 G64 P0.05

 



G21 G64 P0.05

 
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