It's been in the regular release since 2.7
https://github.com/LinuxCNC/linuxcnc/tree/master/src/hal/user_comps/huanyang-vfd

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

-----Original Message-----
From: Gene Heskett <ghesk...@shentel.net> 
Sent: Wednesday, December 23, 2020 8:54 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] vfd vs rs485

[EXTERNAL EMAIL] Be sure links are safe.

On Wednesday 23 December 2020 02:27:54 Benjamin Brockhaus wrote:

> Hi Gene,
>
> have a look at the hy_vfd module.
> It uses the huanyang-version of modbus to communicate to the HY-VFDs.
>
> http://linuxcnc.org/docs/html/man/man1/hy_vfd.1.html
>
And where might this modules code be found?  It is not part of a master install 
on any of my machines including the rpi4's clone of master that gets updated by 
git and rebuilt/reinstalled several time a week.

But I did find it in that git clone, just is not being built. And is not 
available via synaptic for any version from wheezy to buster.

So, assuming I do a git clone on that machine in order to get that src, what to 
I configure in order to get it built and installed on THAT machine, which is 
still running wheezy?

Big order maybe, thanks Benjamin.

> Greetings,
> Benjamin
>
> On 23.12.20 08:11, Gene Heskett wrote:
> > Greetings all;
> >
> > I have discovered that this vfd has an rs485 port, and I have some
> > rs485 bidirectional drivers, I bought a 10 pack of them for use as 
> > differential output encoder translators to ttl signals, which they 
> > are excellent for if programmed to only be receivers.  So I have the 
> > hardware that can talk to this thing via rs485. Some mesa cards also 
> > have this, so my question then is what modules do I load up in my 
> > hal file that would use this comm channel to talk to and/or 
> > command/monitor this VFD.
> >
> > My current lashup is a 5i25 in the computer, a cnc4pc C1G bob on its 
> > p2, and a 7i76D on p3.
> >
> > It is an Huanyang HY02D223B VFD.
> >
> > Do we have a suitable driver for this?
> >
> > Looking at /usr/share/man/man9, I don't see a module that looks like 
> > a likely suspect.  There is a spindle_monitor module, but that man 
> > page is less than half a screen full and doesn't say a thing about 
> > hooking it up.  Very sparse docs IOW. I am assuming that I could 
> > somehow feed it the VO output, provided it was programmed to be a 
> > usable signal once AtoD'd in one of the first 4 field inputs of my 
> > 7i76D.  But that is only a SWAG. I understand those AtoD's aren't 
> > quite real time as I have read they are successive approximation 
> > AtoD's with a 36 volt full scale input, meaning at best for a 0-10 
> > volt signal they would have about a 1% granularity.  That maybe 
> > sufficient for a spindle-at-speed detection, yet TBD, but probably 
> > needing a gain factor plugged in and I don't see such a parameter in 
> > the spindle_monitor man page.
> >
> > Many thanks for any enlightenmet.
> >
> > Cheers, Gene Heskett
>
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> Emc-users@lists.sourceforge.net
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Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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