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  • Boogie
10 Feb 2026 08:57
Replied by Boogie on topic Hydraulic press brake control
David-Diy - possible to put here some photos/videos showing your brake?
  • Jugo2
10 Feb 2026 08:57
Replied by Jugo2 on topic StepperOnline A6 Servo
Hey, gut erkannt. ;)
Zunächst erst einmal vielen dank für die mühe.
Ich habe die vorlage hier aus dem thread genommenen, welche nur eine Achse hatte (von Andrax).

Zu 1: ich hab es ausprobiert und das Handrad wird auch sauber erkannt aber wenn ich dran drehe bewegt sich nix. Gemini sagt ich solle die Pins von axis auf joint bewegungen ändern, aber so funktioniert dann garnix mehr.

Zu 2: das stimmt, mein fehler hab es auf -2 geändert nun geht das homing einmal, aber auch nur exakt einmal und linux cnc sieht anscheinen dannach die achsen auch immernoch nicht als genullt an.
Werde heute abend mich nochmal ran setzten, wäre dir aber echt dankbar wenn du mir weiter helfen könntest.

Falls du discord hast add mich gerne mal :)
@jugo2

LG justus
  • Hakan
10 Feb 2026 08:40 - 10 Feb 2026 08:41
Sheetcam v8 was created by Hakan
Anyone using Sheetcam v8?

They show the new Auto Nest options, which looked very neat so I bought a license.
However, the auto nest doesn't start for me. I get a white window for three seconds
and the a message saying failed to start auto nest application.

I have sent a support request to sheetcam, no reply.
Then I read some very worrying messages on their forum that the company is sold and
the knowledgeable guy left.

Any tips for getting the auto nest to start?
 
  • Hakan
10 Feb 2026 08:12
Replied by Hakan on topic Unterstützung bei LinuxCNC + EtherCAT + Servos gesucht (Raum Stuttgart / Remote,
I don't do consulting but I'll help you get going with the EtherCAT servos,
like I have helped many others here on the forum.

With some luck this is all you need, at least it is a good starting point.
github.com/dbraun1981/hal-cia402/tree/main/example
  • Hakan
10 Feb 2026 08:09
Replied by Hakan on topic Technical questions about CIA402 and homecomp.comp on A6
From what it looks like, the only way out from homing is that is finishes.
This could probably be expanded to include error states and whatever can occur.

 
  • Hakan
10 Feb 2026 08:01 - 10 Feb 2026 09:43
Replied by Hakan on topic How good is Ethercat motion control?
That's actually not often the problem. It isn't a very big problem.
For rigid tapping, threading and other synchronized moves repeatability is the key
Always the same starting position, follow the previous tool path
and that is the case even with a slight delay in the position from an axis.
To put in perspective, say a feed of 600 mm/min, gives a following error of 20 micrometer from 2 1 ms servo cycles delay.
Homing with switches should also be okay as long as homing is always done the same.
And, there is usually a slow feed state at say 30 mm/min => 1 micrometer off due to feedback delay.
Repeatability comes down to switch repeatability.
Homing on index is not affected.

The only real situation I can think of right now is with probing.
But again, probing speed of say 30 mm/min gives 1 micrometer off due to feedback delay.
  • meister
10 Feb 2026 07:03
Replied by meister on topic How good is Ethercat motion control?
The only problem is when you want to synchronize with external movements (like tapping).
  • Gogonfa
10 Feb 2026 06:33 - 10 Feb 2026 06:45
Replied by Gogonfa on topic How good is Ethercat motion control?
You don’t have a real following error! LCNC is only behind if it measures the following error! It compares an old position which comes time delayed due to the Ethercat cycle! 

I modified the DeAsda Hal driver so that I can read out the real following error of my DELTA Servo driver. At 20m/min, the error is less than 20micron (LCNC is showing something around 1.8mm) At normal speeds e.g. 6m/min, the following error is below 1micron (my servos do have 24-bit encoders)

That means, you can simply forget the LCNC following error….just make it large so that it does not stop your system! Use instead the following error limits in your drive or use the drive following error in LCNC to make your own Stop or Warning routine in LCNC, but don’t forget….the servos must be absolutely perfect tuned in the drive and do not use any p I d parameters in LCNC for that drive!!!

 
  • markbaenen
10 Feb 2026 04:34
Replied by markbaenen on topic Configuration Problems 7i92 PnCConf
When I have time I will write up a "5aBOB for Dummies". My big router will use a 7c81 x 5aBOB.
  • NWE
10 Feb 2026 04:14
Replied by NWE on topic Ethercat panel configuration
For what it's worth, searching aliexpress for panel21190e finds some similar items.
I notice one of the pictures shown at  www.aliexpress.us/item/3256808758453292.html  appears identical to Soccer Kid's panel.
  • harindugamlath
10 Feb 2026 03:54
Replied by harindugamlath on topic Ethercat panel configuration
Can you kindly share more info about this ethercat panel?
Where did you get it and model? And a few more photos?
  • Bansardo
10 Feb 2026 03:33
Replied by Bansardo on topic Can the OPI5 be Configured to Run LCNC?

Sorry for the late reply, that image should also work for de OPI5 plus if you only edit in "armbianEnv.txt" the line:
fdtfile=rockchip/rk3588s-orangepi-5.dtb
to:
fdtfile=rockchip/rk3588-orangepi-5-plus.dtb
How can I do this? It is won't startup. I must write iut to SD card and change this parameter and than with dd transfer all to emmc?
  • harindugamlath
10 Feb 2026 03:27
Replied by harindugamlath on topic How good is Ethercat motion control?
Huge thanks to everyone for the great discussion. It's crystal clear now. We're sort of running a open loop like system with LCNC and letting the drives handle the motion.

But the added benefit getting a real world following error is great to monitor and possibly to adjust the feed to keep everything tight. Which reminds me of Fanuc AICC.

Professional controllers like Fanuc, Mitsubishi etc. are using fiber optic communication to the drive and has some sort of tracking error control options such as AICC II or smoothing options, I'm guessing they're doing the same thing?
  • tommylight
10 Feb 2026 02:51
Replied by tommylight on topic Configuration Problems 7i92 PnCConf
Code:
IO Connections for P2 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 0 IOPort PWM 0 PWM (Out) 14 1 IOPort None 2 2 IOPort StepGen 0 Step/Table1 (Out) 15 3 IOPort None 3 4 IOPort StepGen 0 Dir/Table2 (Out) 16 5 IOPort StepGen 8 Step/Table1 (Out) 4 6 IOPort StepGen 1 Step/Table1 (Out) 17 7 IOPort StepGen 8 Dir/Table2 (Out) 5 8 IOPort StepGen 1 Dir/Table2 (Out) 6 9 IOPort StepGen 2 Step/Table1 (Out) 7 10 IOPort StepGen 2 Dir/Table2 (Out) 8 11 IOPort StepGen 3 Step/Table1 (Out) 9 12 IOPort StepGen 3 Dir/Table2 (Out) 10 13 IOPort None 11 14 IOPort QCount 0 Quad-A (In) 12 15 IOPort QCount 0 Quad-B (In) 13 16 IOPort QCount 0 Quad-IDX (In)
Where :
Pin# = is the equivalent parallel port pin number
I/O = is the pin number on the 26 pin header, see the manual for the board you have
Sec. func = is easy as it is written what function is active for that pin
Chan = the channel for the above function
Pin func = easy, just mind the step/dir and ignore the table thing
-
In general, you need the manual for the pinout and the mesaflash --readhmid report to figure pins out.
These are not parallel ports (even those have different modes that vary inputs and outputs, like "out","in", or "X"), these are Field Programmable Grid Arrays, meaning they can be programmed to pretty much everything within reason, so the pins will change, functions will change, etc, etc.
In short, there is no easy way to put all the thousands of pin options/functions into a wizard, especially as we keep asking from Mesa to make new firmware for whatever we happen to be working on at any given time, and they always, always make whatever we ask, no matter how strange it might seem.
So, thank you to Mesa and PCW for the best support on planet Earth.
  • Nathan40
10 Feb 2026 02:49 - 10 Feb 2026 03:11
Replied by Nathan40 on topic Using 7c81 with 5v encoder on bob3 config
Hi
Wiring looks ok to me. Please guide for the below points if they can help
a. Should I decrease the input voltage to 3 V. Will that help?
b. Should I decrease the output voltage of the encoder using a divider?
c. Perhaps changing the below values?
setp    hm2_7c81.0.encoder.00.counter-mode 1
setp    hm2_7c81.0.encoder.00.filter 0
setp    hm2_7c81.0.encoder.00.index-invert 0
setp    hm2_7c81.0.encoder.00.index-mask 0
setp    hm2_7c81.0.encoder.00.index-mask-invert 0
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