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So it was a mistake, that is a huge relief.
And i was not aware who did it as i did not bother to check from frustration.
Thank you.

I can absolutely understand if it was a mistake, but from a bit of reading it does not seem to.

So you think that I broke AxisGUI on purpose to fix something in Gmoccapy? Really?
I'm sorry to say but comments like these are what I would call 'plain absurdity'.
And just to warn you there is going to be yet another release because I screwed up fixing yet another bug.

Ethernet latency is the most common cause of the "Error finishing read"  fault

It basically means you have lost connection to the card, either because too
many read requests went unanswered within in the time limit  (with default settings
that time limit is 80% of the servo thread period and 5 successive requests must time out)

This may be caused by poor Ethernet latency or something more basic like power problems
on the FPGA card, host Ethernet power management issues, or Ethernet hardware problems.


What LEDs are illuminated on the 7I96S when you get the error?

Can you run this command after LinuxCNC gets the error and post the results here:

halcmd show all *.tmax

Also the CPU speed would help.

 

I have disabled all BIOS performance options:

- C-States
- Intel Turbo Boost Technology
- EIST

And so on.

But the error keeps appearing.

I have tried everything. I am quite frustrated with Mesa and LinuxCNC. I knew it wouldn't be easy, but not this complicated!

There's also 7I96S firmware to allow a parallel connected MPG to connected
the  7I96S's P1 expansion connector:

forum.linuxcnc.org/27-driver-boards/4691...ncoder-on-p1?start=0