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Fwiw, I'd just toss away that useless isolation and power your kit from the same 'clean' supply your control board is getting. You'll have to clean that up anyway, might as well use the same rail for the scales/probe/setter/switches/all.

Less is more!!

Are you talking about me just using buck converters instead of isolation? Just use my 24V to power everything....? Isnt there a bigger risk for noise and ground loops? I think i would still need to isolate some things... ie. plasma torch. All that said.. I do think i could skip isolation on the servo amps.. As you can see in the photo... I was just 'following protocol' as they say!   

Lpkkk wrote:

I've asked in basic configuration category but there is no answer for few days.

My current guess is about FERROR and ferror_min. 
 

You'd prolly have better luck sharing your config + hardware/step setups. Bet some here could fine tune this for you being able to see clearer. 

No, not ferror. PID rather. Hack it with deadband = 0.001 (for instance). Bit of a band-aid though... 

I don't think I can get LinuxCNC 2.91 but 2.93+Debian12
should be identical as far as network setup goes.

Fwiw, I'd just toss away that useless isolation and power your kit from the same 'clean' supply your control board is getting. You'll have to clean that up anyway, might as well use the same rail for the scales/probe/setter/switches/all.

Less is more!!

You need el5102 module with two encoder interfaces, one for spindle and one for handwheel AB phase

I think PB gets the DRO units from INI, but I noticed this:

forum.linuxcnc.org/qtpyvcp/48401-py3-pro...-doc-lcnc-2-9#287437

When I was poking around.  Maybe check your RS274 startup values?

JamesHoward wrote:

Mecanix: What sim are you using? I cant seem to find something decent AND has a full library.... It has been years since I tried LTSpice, has it gotten better?

Keep in mind (not that I expect you to know) that I am using a +-6 volt signal to run the yaskawa drives on their input 1. (I have my reasons!) lol

Also, do you have a THT alternative to suggest for the nearly $2/piece LTV-M601?

I'm onto Micro-Cap 12. Industrial grade simulator, currently free/no support. Rich archive (spice models, all imaginable examples, etc). 
archive.org/details/mc12cd_202110

6VDC analog is achievable with the same circuit. e.g. Drop R3 down to 2K with a 12V input == 3V analog @ 50% pwm duty cycle. 

TH plenty in the high-speed/quality optos. Pull up your fav e.component supplier and search "High Speed Optocouplers"
e.g. www.mouser.com/c/optoelectronics/optocou...-speed-optocouplers/
 

Can anyone help me, How to Spindle Orientation using forward-reverse PWM signals using parallel port? 

I have connected the encoder signal to the spindle axis. and the encoder works fine, I can run rigid tapping. But I am confused about how to configure the spindle orientation to position the BT30 lock before toolchange..

Mecanix: What sim are you using? I cant seem to find something decent AND has a full library.... It has been years since I tried LTSpice, has it gotten better?

Keep in mind (not that I expect you to know) that I am using a +-6 volt signal to run the yaskawa drives on their input 1. (I have my reasons!) lol

Also, do you have a THT alternative to suggest for the nearly $2/piece LTV-M601?

I guess I may never stop hearing about the ChatGpt thing! lol. No, ChatGpt did not make my schematics or have anything to do with them. Those are all true 100% human work! Also probably why I am still using PC827...... I may have to update them. Thanks for that. 
As for level-shifting, this board has a 23 x 74hc245t on it. I plan to pull the Vcc pins of the input chips and move them to the 3.3 V rail. They will then take a 5V input and output 3.3V. I will leave the output chips alone as they are shifting their inputs up to 5V.

Ok about 24hr later.
Linuxcnc has been idling all that time, run some gcode every now and again, screen goes blank after no input, wiggle the mouse and it wakes up, not a single packet issue.
I'd say it's pretty bloody good. World's better than before.
Thanks so much for the hard work.

Hi PCW!
I am working with Debian 12 and Linuxcnc 2.9.1

Oops, just noticed you're on a 24V input (not 12V). My bad. In that case change R3 to a 28K'ish. GPT would have spot that inaccuracy...

Sim with LTSpice or with any of those online simulatorswhatever... plenty of them around www lane. GL.

What version of LinuxCNC and OS are you using?

 I can try an duplicate this. I don't have a PCI Ethernet card
compatible test system but can test with  a USB-->Ethernet
dongle for general internet access, This should be similar
enough to at least get an idea where things are going wrong.
 

@tommylight - can you please tell me where to find that network HowTo? Couldn't find that here.
After deleting and reboot the network manager shows no wired connection anymore, no auto inet. I can send the actual ip a if my internet is working again. Actually it isn't. I'm writing from my windows PC.

@Chris@cnc - i changed the network/interfaces to your suggestion and after reboot I dont have any connection no more.

Is that allright? Do I have to reconfigure both connections as before? How do I find out which name is what card? I want to have the internal intel card for MEsa and the RTL8111 for Internet. Cables are sitting ok for that config.
So, I tried to configure a new connection for Internet with eno1 - my settings in network manager are set, but no connection is shown. ip a shows the new entry after reboot, but there's no connection shown in the upper right edge of my desktop.

Thanks in advance!