Hi Ted;
I have spent the whole day trying to get the data off my system to send
to the people who think they can find the problem when can get a
halshow file to them. The computer was very stubborn. Finally had to drive
sixty miles to the local store to get a Flash Drive to extract the data.
As soon as I know something I'll pass it on.
Thanks
Don
----- Original Message -----
From: "Ted Hyde" <laser...@gmail.com>
To: <emc-users@lists.sourceforge.net>
Sent: Friday, May 21, 2010 5:13 PM
Subject: [Emc-users] EMC2 Homing with Index Pulse
> Don - I am running with 2.3.0 with a Mesa 5i20 and am noticing the same
behavior; I have at least for the moment returned to mode 2 (home switch use
only) as that is currently sufficient; my initial expectation was that an
unfinished part of my system may have been at fault. It's a servo system,
separate limit +/-, separate overtravel +/-, separate home for each axis
(total 5 sw per axis, nothing shared), running encoders as hostmot2 modules,
and the index pulse does occur. If I use mode 3 or 4 for homing, the
do_homing() proc doesn't appear to see the index pulse at all and continues
to the overtravel limit. I can reset count signals with the .index-enable,
so I believe the hostmot2 and hardware are fine.
>
> I expect there is an additional "....encoder.xx.index-enable 1" or
equivalent required for the system to actually use the index, however in my
earlier dealings with the hostmot2 I thought that particular parameter was
to clear the position counter on the next index pulse, instead of being used
by another part of EMC; and thus you would have to set that parameter true
every time you wanted to clear the position. I may of course be, way off,
however it is also described this way in the current man page for hostmot2.
I was unable to find any additional requirement to set it true for homing
use.
>
> (EDIT: ....encoder.xx.index-enable 1 does indeed work as described in the
hostmot2 man page; verified just now on my lathe. I can't see how one would
use the same parameter for the homing setup).
>
> Ted.
>
>
>
> EKCo Inc Don Stanley wrote:
>
> > > Hi All;
> > > I have installed EMC 2.3 on a lathe using the Motenc Light interface.
> > > Two problems have me stumped.
> > >
> > > 1- I want to Home at the Encoder Index after using Plus-limit / Home
> > > combination Switch at the Plus end of travel to get to a
known start
> > > position. This is shown in the third homing diagram on the
page
> > > of four diagrams in the Integrator Manual INI file homing
section.
> > >
> > > I can't stop if from Homing at the "Home Switch release
point".
> > > Does anyone know how to make this work with my equipment?
> >
>
> --------------------------------------------------------------------------
----
>
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