On Friday 11 July 2014 21:46:47 Chris Morley did opine
And Gene did reply:
> > From: ghesk...@wdtv.com
> > To: emc-users@lists.sourceforge.net
> > Date: Fri, 11 Jul 2014 15:58:31 -0400
> > Subject: Re: [Emc-users] Where to get latest PncConf?
> > 
> > 
> > 
> > pncconf seems unable to handle that stepgen disabling stuff.  Also
> > the stepgen scale factors needed seems to elude me.  Seems like I
> > ought not to have to do anything if the ini file fetches them. Ditto
> > for the pulse timings in ns these drivers need. Someone said 2500,
> > but I've been running them somewhat faster than that for a couple
> > years now.
> > 
> > So, its sitting on the shelf, parport cable unplugged, waiting on
> > advice.
> > 
> > :)
> > 
> > Thanks Peter.
> > 
> > Cheers, Gene Heskett
> 
> I looked into PNCconf with the  prob_x2   XML file.
> I found a bug caused by Peters's XML's not using the same labels as
> linuxcnc's XMLs. It caused some of the GPIO pins not to show.
> I will push a fix.
> 
Great.  Downloadable by itself?  URL?

> That being said PNCconf can only disable stepgens in a specific order
> (highest to lowest) If you need the stepgen in a specific location
> that doesn't follow this convention, then you need custom firmware.
> (as Peter has told you)
> This is a limitation of hostmot2.

I had assumed as much.
 
> The numbering system displayed is the component number not the physical
> pin number. luckily since you don't use a daughter board it is easy to
> figure out. The top left is physical pin 1, under it pin 2 etc.
> top right is pin 13, down pin 14 etc
> 
> It might be nice to add the PIN info to the XML file, then pncconf
> might be able to display better numbers, but it gets complicated when
> using daughter boards.

I got a pinout from mesaflash, by interrogating the card, which does show 
both component and pins.  Very, very helpful. :)

Also, due to a clash with the 5i25 pwmgens, I may have to disable those 
and use the slower software version.  The pwn rev signal on pin 16 
apparently is part of using the 5i25 pwm, and in order to run the G33.1, 
I'll have to forgo the 5i25's pwm's and handle that reverse in my longer 
hal file as it synths a stop when that line changes state, zeroing the pid 
& pwm inputs until it has essentially stopped, then initiates the ramp up 
in the other direction from zero speed.  Currently it runs a G33.1 in a 
half turn increment peck cycle just fine.

The main reason for putting the 5i25 in is the noise in the velocity 
output of the encoder, caused by the relatively low rate of sampling the 
base-thread does.  At the lower speeds, its occasionally slamming the 
gears in the headstock when not loaded while trying to hold a steady 100 
or 200 rpm.

Basically, all I really need out of the 5i25 is its much higher sample 
speed encoder, I am happy with the way everything else runs right now.

PncConf makes that encoder config needlessly complex, making me enter a 
bunch of numbers I don't have instant access to. If we could get the 50 
slots/rev and x4 settings out of the hal file by default, it would be much 
easier to setup correctly.

Once the 5i25 has been setup by disabling what I don't need, does this 
hold over a powerdown?

Thanks Chris.

> Chris M
> 
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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)
Genes Web page <http://geneslinuxbox.net:6309/gene>
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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