Are you using a USB keyboard and mouse?  Wired or wireless?  Do you have any 
other USB devices connected to the PC?

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-----Original Message-----
From: Viesturs Lācis <viesturs.la...@gmail.com> 
Sent: Tuesday, November 24, 2020 4:09 PM
To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] Velocity fluctuating, when I try to jog the machine

[EXTERNAL EMAIL] Be sure links are safe.

I have worked on that machine for some time now and what I have managed so far 
is that machine actually works nice, when I execute a sample g-code file. I 
saved it, edited to scale up 10x and then ran it. Everything is nice, rapids 
are smooth at 15 m/min.

The problem is that the velocity is fluctuating, when I am jogging the machine. 
And the thing is that it is fluctuating not only when I jog it with keyboard, 
but also when I jog it from Axis GUI by selecting particular axis and pressing 
"+" or "-" (I had almost exact issue with another machine last week, but for 
that machine somehow I discovered that velocity is fluctuating when I jog with 
keyboard, it moved smoothly if I jogged from GUI, so I decided that it is 
crappy keyboard, probably too much dust under the keys).
Here is a velocity graph for one particular attempt of jogging it:
https://www.picpasteplus.com/v.php?i=5f646fd6db

Here is INI file:
https://pastebin.com/8MLwCVw5

Here is HAL file:
https://pastebin.com/9eqSSNtX

As you can see, the section related plasma torch and thc are in progress.
And here I have another issue - encoder rawcounts value does not change, if I 
apply +12V on thc board inputs (that is 300V version, so I would expect at 
least some pulses). I suspect that THCAD would output pulses even if there is 
no voltage applied to input. Is that correct?
Here is a picture of THCAD board in the cabinet:
https://www.picpasteplus.com/v.php?i=0cbcca94b0
My first question - is the wiring correct? I mean, what is minimum wiring 
required? I have +5V and GND to power the THCAD and the third is FOUT+, all 
three wires connected to "encoder" on 7i96 - 5V and GND to the respective pins, 
FOUT+ to A.
Here is the 7i96 board:
https://www.picpasteplus.com/v.php?i=d238f584b4
Am I missing something? I think that the jumpers are correct for single-ended 
pulse signal. And I have set it in HAL for counter_mode = 1. I am all out of 
ideas.

Viesturs

ceturtd., 2020. g. 12. nov., plkst. 23:43 — lietotājs Peter C. Wallace
(<p...@mesanet.com>) rakstīja:
>
>
> >Any ideas about those oscillations?
> >
> >Viesturs
> >
>
> Can you post your hal/ini files?
>
> Peter Wallace
> Mesa Electronics
>
>
>
>
> _______________________________________________
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


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