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Yes this is my goal, everything on a same board.
IC-NV part is not easy but one from PEdpex is working so I should use the same.
There is not much chip that can do this as good as IC-NV so I might stick to this one.
And STM32F4 works good for encoders so it should be a good match.
I will try to start from your E7000 then thank you

I want to install samba, but apt install samba gives "Package 'samba' has no installation candidate", I did apt update but it didn't help. I checked repositories and there is only linuxcnc.org. Should I have also Debian repositories or not? How to install samba?

Also do I need: "download.opensuse.org/repositories/science:/EtherLab/Debian_12/"? What is it for? It gives an error on apt update:
"Get:1 download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ InRelease [1,575 B]
Err:1 download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ InRelease
  The following signatures were invalid: EXPKEYSIG A94819A7CB97A204 science:EtherLab OBS Project <science:EtherLab@build.opensuse.org>
Hit:2 repository.qtpyvcp.com/apt develop InRelease                                              
Hit:3 www.linuxcnc.org bookworm InRelease                                                       
Reading package lists... Done                      
W: GPG error: download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ InRelease: The following signatures were invalid: EXPKEYSIG A94819A7CB97A204 science:EtherLab OBS Project
E: The repository 'download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details."

 

I found Pedpex's work, awesome.
Maybe that is what you have in mind, but I would put his circuitry on the same board as ethercat
to have it neatly packaged.
One thought I got is if one can skip the quadrature part in some way. Are there sin cos chips
that can deliver a value over spi or i2c for example?
The built-in quadrature encoder in stm32f4 can read with at least 3 MHz so maybe not a big problem.
I have code to extend numbers over the 16-bit and 32-bit boundary.
Code for encoder counting is in E3000 project. 
Best to base HW on E7000 project, clear out pins and I2C and add encoder inputs.
 

IC-NV are here for the conversion, not easy to setup but Pedpex, a member from the forum did the stuff.
My goal is to merge his project to yours basically.

I will prepare all the work environment and when the schematic will be done or almost I will open a thread. Maybe i should start with a prototype PCB from you as I already get a pcb from pedpex and when everything is running, I do the merge

I Installed the WIll have a look at it.

Best regards
Jens

Here is a screenshot from the Latency Test of the old configuration. Only for the Kernel-Infos.
The latency was horrible at this time (without irq-optimisation at this time)
   

I don't know much about cos sin. The whole processor is available for you to do all sorts of processing.
The ethercat part is the easy one I would say.
Every cycle you calculate a new encoder value, set a pdo variable and the soes library does the rest.

Edit. But I checked quickly. So you need to take in two analogue signals and calculate the phase angle.
Absolutely doable, could be a nice application.
Start a project thread and I'll give you a hand with the ethercat stuff.

Edit 2. The ADCs on STM32F4 are only 12-bit, you may need 16-bit ADC for this. Another processor? 
External 16-bit ADC unit?

Edit 3. IC-NV instead of ADCs of course.

Hi,

I also did a fresh installation on a DELL Optiplex 3060 Micro PC (RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller)
Everything incl. IRQ-Optimizing (Latency) works fine, but i also run into this error "Error finishing read" with my MESA 7i96s.


In my old installation (at this PC) i run the 3.6.0 rt11 Kernel and did not have this problems, so i think, last time i updated it for the same reason. Sadly i don`t know how to do this update again.
Is there an easy way only updating the kernel?
(Sorry but I`m not in the Linux-Space, so its a little hard for me)

Thanks a lot
Jens

Buongiorno, sono un nuovo iscritto di appena 78 anni, appassionato di elettronica e meccanica.
Ho bisogno di inserire le funzioni Pausa e Resume per poter fermare gli assi x e y mentre l'asse z si trova in un certo punto, e riprendere il loro movimento quando l'asse z raggiunge il punto successivo (tutto controllato da fotoaccoppiatori). so che è possibile, ma purtroppo la mia competenza nel linguaggio di Linuxcnc è limitata.
Grazie.

I use ecam, as soon as I can I'll send you mine, it works well.

Hello,
Thank you for your reply
Ideally, I would like to integrate the project from PedPex which is a COS SIN converter (with IC-NV chip) for heidenhain glass scale directly as an ethercat module. It would receive COS SIN signal, convert it to quadrature, read by the STM32 then sent to Ethercat.
But this is a little bit out of my league knowledge wise, even if you did most of the job regarding ethercat and Pedpex most of the job regarding COS SIN conversion

I am currently running LINUXCNC - 2.9.7
6.1.0-30-rt-amd64 #1 SMP PREEMPT_RT Debian 6.1.124-1 (2025-01-12) x86_64 GNU/Linux
This was upgraded, re-installed and built from source after my initial installation. I installed Mint on another drive, but the OS took forever to boot, and just felt sluggish.
My main aim is to get something functional and stable going ASAP. I can always make it nice later.

Actually when you know where to look, the documentation runs to hundreds of not thousands  of pages.
setting up a gantry machine requires joint axes and is covered in the  homing docs. linuxcnc.org/docs/stable/html/config/ini-homing.html
You usually need to read that link about 10 times before it makes sense.
Briefly you need a home switch on each joint (eg a joint is a motor). When set up right with negative  home_sequence, the first side of the gantry stops and waits for the other side to catch up before moving in unison. Gantry Squareness is adjusted by setting the home_offset in the ini file 
 

Yes, you do need switches for each joint for tandem axis to work properly and be able to square the gantry anytime the machine homes.
If you do not have switches, you can just wire both Y drives to the same output on Mesa and make a new simple XYZ config.
BTW, you can make as many configs as you like, test, experiment, try things out, have a blast...
And feel free to ask as much as you like, you are always welcomed.

The machine does not currently have limit switches. I have the limit switches commented out.

I recently rebuilt the machine from the ground up. As the software is an upgrade, I am trying to get it working in its most basic form before adding limit switches, a touch plate, a probe, and a tool changer.

Do I have to have hardware limit switches set up in order to get the gantry to work correctly?

Apologies if that is a dumb question. I have found the documentation incredibly lacking, which is why I’m here on this forum.