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  • GFC
  • GFC
15 Aug 2026 16:33
Replied by GFC on topic Integrating ethercat with QTplasmaC and Beckhoff modules

Integrating ethercat with QTplasmaC and Beckhoff modules

Category: Plasmac

managed to fix this by completely rebuilding the config, no idea what was causing it
  • karlhe
  • karlhe
15 Aug 2026 16:00 - 15 Aug 2026 16:17
Replied by karlhe on topic radiusendpunkt nicht gefunden

radiusendpunkt nicht gefunden

Category: General LinuxCNC Questions

 

File Attachment:

File Name: zinken-kuze-seite.ngc
File Size:5 KB
 

File Attachment:

File Name: zinken-kuze-seite.ngc
File Size:5 KB
Danke, ich füge das nc programm hinzu.

ich habe das programm mit nc viewer laufen lassen, keine Fehler


Karlhe
  • PCW
  • PCW's Avatar
15 Aug 2026 15:17
Replied by PCW on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

If this is a drive level issue, note that a 26C31 does not swing to 5V
and its output level is about 2 diode drops below 5V (3.6V) with a 5 mA load.
I connected the motor driver using +5V and A-.
 
 

Yes, connected that way you would get close to 5V drive.

The issue with the 26C31 is that the high level drive does not swing to 5V
but the low level drive does swing close to 0V.

 
  • MaHa
  • MaHa
15 Aug 2026 15:01
Replied by MaHa on topic radiusendpunkt nicht gefunden

radiusendpunkt nicht gefunden

Category: General LinuxCNC Questions

G91.1 ist eigentlich standard für I,J,k , ausgehend vom Kreismittelpunkt. Diese parameter werden ässerst selten als absolutwert angewendet.
Das Problem mit Fusion360 und Kreisendpunktfehler taucht seit langer Zeit immer wieder auf. Vielleicht ist da was mit Nachkommastellen, 3 für metrisch und sonst 4

Einige Ideen bringt auch die websuche:

fusion360 linuxcnc end of arc differ
 
  • Mtndrew77
  • Mtndrew77
15 Aug 2026 14:40
Replied by Mtndrew77 on topic Okuma encoders and drives

Okuma encoders and drives

Category: General LinuxCNC Questions

Can you tell me what encoder model you were pulling the data from? I know the resolution between the different generations can vary greatly. I think the latest generation claims about 10 million PPR.

Thanks
  • muddiver
  • muddiver
15 Aug 2026 14:10 - 16 Aug 2026 08:57
Replied by muddiver on topic Wechsel Mach3 auf Linux CNC bestehendes Handrad weiterverwendbar

Wechsel Mach3 auf Linux CNC bestehendes Handrad weiterverwendbar

Category: Deutsch

deleted
  • mediocre_chloride
  • mediocre_chloride's Avatar
15 Aug 2026 13:59 - 15 Aug 2026 14:00
Replied by mediocre_chloride on topic radiusendpunkt nicht gefunden

radiusendpunkt nicht gefunden

Category: General LinuxCNC Questions

Das sieht nach einem Programmierproblem aus. Ist der Radiusmittelpunkt Absolut oder relativ? ich sehe in deinem Programmkopf G91.1 (relativ). Wechsle dies mal auf G90.1 und versuch es nochmal.
PS: Das Programm im Anhang würde helfen
  • JThom
  • JThom
15 Aug 2026 13:56
Replied by JThom on topic Colchester 4000L retrofit

Colchester 4000L retrofit

Category: Turning

It has a single MPG wheel mounted on the door/control. I might re-use it, but since most of the rest of the existing controls are going away (many worn out keys), I think a detachable pendant with some buttons might be nice for setting up longer work.

More importantly for anyone interested, I think I was wrong on the encoder/commutation stuff. After further investigation, it seems ABZ encoder outputs are available from the VCU and I don't need to worry about commutation, although there is a different wrinkle that's escaping me right now.

A couple of days after I posted about this, I got commandeered to look at a similar vintage milling machine for a repair, or similar refit. A week into that, I had to move on to a more urgent broken production tool. It's been fun. I'll update the thread with my lathe progress, success or failure when I get back to it, but it could be a while.

Having been using chat-bot assistance, I'm mindful that much of it's info on the topic is scraped and recombined from these very forums, so it's important to give back real accurate information about a project's actual viability and methodology when I can.
  • mediocre_chloride
  • mediocre_chloride's Avatar
15 Aug 2026 13:41
El2521 Configuration was created by mediocre_chloride

El2521 Configuration

Category: EtherCAT

Hi 
I used Beckhoff EL2521 recently to Build a 2 Axis Configuration. Had a bit of a Journey until i managed to configure the EL2521's correctly.
Wanted to share this here as kind of "Documentation", as it may help people having the same issue

My Config:
gitlab.com/Lolipop333/linuxcnc_ec_plasma...1cff00b5afe3ec75813/

Explanation Video:
  • skunkworks
  • skunkworks
15 Aug 2026 13:27
Replied by skunkworks on topic spindle speed pick-up using the bull gear

spindle speed pick-up using the bull gear

Category: General LinuxCNC Questions

We used gear tooth sensors.... for rigid tapping you would need 3 - a,b and z

Jon from pico systems did the same thing...

pico-systems.com/bridge_spindle.html

Good writeup..

sam
  • mediocre_chloride
  • mediocre_chloride's Avatar
15 Aug 2026 13:27 - 15 Aug 2026 13:32
Replied by mediocre_chloride on topic LinuxCNC 2.9 / Debian 12 RT – EtherCAT Master Setup für 750W Servo gesucht

LinuxCNC 2.9 / Debian 12 RT – EtherCAT Master Setup für 750W Servo gesucht

Category: Deutsch

Hi
Danke für den Thread.
Mit A6 Drives hatte ich auch das Problem, dass die Slave manchmal nicht richtig startet, ein restart des Pi's hat das gelöst. Später habe ich eine bessere Lösung gefunden: Seite 241 im Manual, Parameter C13.05: EtherCAT synchronization mode setting.

Warning: Spoiler!


Ich gehe davon aus das der Jitter vom Hostcontroller mehr als ein uS ist (gemessen auf rpi5 wurde um die 6000ns jitter auf dem servo thread). Deshalb habe ich diesen Parameter auf 2 gesetzt. jetzt starten Sie alle und brauchen auch nicht mehr ewigs. nur wenn die Drives laufen, linuxcnc geschlossen wird und wieder geöffnet habe ich einen "Ethercat synchro loss error" aber kurzes Power-cyclen über den Notaus dann gehts wieder
  • tuxcnc
  • tuxcnc
15 Aug 2026 13:07
Replied by tuxcnc on topic run Linuxcnc on xenomai with EVL(the realtime core)

run Linuxcnc on xenomai with EVL(the realtime core)

Category: General LinuxCNC Questions 

[url]https://github.com/hdiethelm/xenomai4-linuxcnc[/url]

There are many errors in scripts.
At last I compilled kernel, that not boot up...
For me wasted time. 
  • unicorn
  • unicorn
15 Aug 2026 12:02
can't issue MDI command when not homed was created by unicorn

can't issue MDI command when not homed

Category: General LinuxCNC Questions

position: relative actual
new here, I use live system, I got that error when I want to run some G codes. How to configure?
  • karlhe
  • karlhe
15 Aug 2026 09:58 - 15 Aug 2026 16:15
radiusendpunkt nicht gefunden was created by karlhe

radiusendpunkt nicht gefunden

Category: General LinuxCNC Questions

Hallo.
programm wird nicht eingelesen, radiusendpunkt wird nicht gefunden.
Programm erzeugt mit fusion360.
fehlermeldung im anhang..

karlhe 
  • dm17ry
  • dm17ry's Avatar
15 Aug 2026 06:41
Replied by dm17ry on topic Okuma encoders and drives

Okuma encoders and drives

Category: General LinuxCNC Questions

i've got a few communication logs from a logic analyzer and had a quick look at it. was able to decode it: 10 Mbit/s, NRZ(L), 4b6b, LSB first:
..1.11 0
..11.1 1
..111. 2
.1..11 3
.1.11. 4
.11..1 5
.11.1. 6
.111.. 7
1...11 8
1..1.1 9
1..11. a
1.1..1 b
1.11.. c
11...1 d
11..1. e
11.1.. f

but haven't advanced much beyond looking at the data.. don't have the hardware. packets look like this:
ff a1 .. aa 57 66 
01 74 .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 45 39 
01 50 .. 60 e8 74 01 .. .. .. .. 02 bf 04 .. .. .. .. .. .. .. .. .. .. .. .. .. 02 bf 03 .. .. .. .. 83 ca 
01 0c .. e3 08 34 02 .. .. .. .. f7 0b 3f .. .. .. .. .. .. .. .. .. .. .. .. .. f7 0b 2f 80 .. .. .. b3 be 
01 04 .. e3 08 34 02 .. .. .. 01 73 95 d5 .. .. .. .. .. .. .. .. .. .. .. .. 01 73 95 b6 80 .. .. .. cd e7 
01 14 04 e0 08 28 .. 01 .. .. .. 01 bf 6c .. .. .. .. .. .. .. .. .. .. .. .. ff ff 69 fe .. .. .. .. 38 d6 
.. 74 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. bb 18 
.. 50 01 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. d5 a8 
.. 0c 01 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 01 .. 84 08 .. .. .. .. .. .. .. .. 23 e5 
.. 04 01 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 01 .. 84 08 .. .. .. .. .. .. .. .. 19 f6 
.. 14 01 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 98 38 
ff a1 .. ab de 77 
01 74 .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 45 39 
01 50 .. 60 e8 74 01 .. .. .. .. 02 bf 04 .. .. .. .. .. .. .. .. .. .. .. .. .. 02 bf 03 .. .. .. .. 83 ca 
01 0c .. e3 08 34 02 .. .. .. .. f7 0b 3f .. .. .. .. .. .. .. .. .. .. .. .. .. f7 0b 2f 80 .. .. .. b3 be 
01 04 .. e3 08 34 02 .. .. .. 01 73 95 d5 .. .. .. .. .. .. .. .. .. .. .. .. 01 73 95 b6 80 .. .. .. cd e7 
01 14 04 e0 08 28 .. 01 .. .. .. 01 bf 6c .. .. .. .. .. .. .. .. .. .. .. .. ff ff 69 fe .. .. .. .. 38 d6 
.. 74 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. bb 18 
.. 50 01 03 .. .. .. .. .. .. .. .. .. .. .. .. .. .. 01 .. 44 04 17 b3 33 04 .. .. .. .. .. .. .. .. df 18 
.. 0c 01 03 .. .. 01 .. 86 1b 03 f3 e4 58 4d .. ff ff 01 .. 44 15 .. .. .. .. .. .. .. .. .. .. .. .. b5 07 
.. 04 01 03 .. .. 01 .. 86 1b 03 f6 ac f1 72 .. ff ff 01 .. 44 15 .. .. .. .. .. .. .. .. .. .. .. .. f6 9b 
.. 14 01 03 .. .. .. .. .. .. .. .. .. .. .. .. .. .. 01 .. 44 06 .. .. .. .. 01 .. 44 15 .. .. .. .. 52 df 
ff a1 .. ac 61 03 
01 74 .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. 02 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 45 39 
01 50 .. 60 e8 74 01 .. .. .. .. 02 bf 04 .. .. .. .. .. .. .. .. .. .. .. .. .. 02 bf 03 .. .. .. .. 83 ca 
01 0c .. e3 08 34 02 .. .. .. .. f7 0b 3f .. .. .. .. .. .. .. .. .. .. .. .. .. f7 0b 2f 80 .. .. .. b3 be 
01 04 .. e3 08 34 02 .. .. .. 01 73 95 d5 .. .. .. .. .. .. .. .. .. .. .. .. 01 73 95 b6 80 .. .. .. cd e7 
01 14 04 e0 08 28 .. 01 .. .. .. 01 bf 6c .. .. .. .. .. .. .. .. .. .. .. .. ff ff 69 fe .. .. .. .. 38 d6 
.. 74 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. bb 18 
.. 50 01 04 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4f 26 
.. 0c 01 04 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4c 83 
.. 04 01 04 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 76 90 
.. 14 01 04 .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 02 b6 
 
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