to be sure --HOME_SEQUENCE 0|1|2|3
----0|1|2|3----- this set sequence for axis?
like 0-x first, 1-y second   etc?


On Tue, Jul 15, 2014 at 2:16 PM, Gene Heskett <ghesk...@wdtv.com> wrote:

> On Tuesday 15 July 2014 15:38:42 a k did opine
> And Gene did reply:
> > about code
> > from hal
> >
> >
> > net home-switch <= hm2_[HOSTMOT2](BOARD).0.gpio.025.in_not
> > net home-switch => axis.0.home-sw-in
> > net home-switch => axis.1.home-sw-in
> > net home-switch => axis.2.home-sw-in
> > /////////////////////////////////////
> > interesting explanation about pin connection
> > ----
> >
> > each of the three axes have their own home switch.  All
> > # home switches are connected to GPIO 25, though hostmot2 boards
> > generally # have enough GPIO pins to put each axis' home switch on its
> > own pin. ////////////////////////
> > how it can work ---- All home switches are connected to GPIO 25???
>
> Either all switches are wired n.c. and in series, or all wired n.o. and in
> parallel.  lcnc contains logic that will not move anything if any of the
> switches is already tripped when you hit ctrl+home.  You must have the
> statement in the .ini file for each axis HOME_IS_SHARED = true, and
> HOME_SEQUENCE 0|1|2|3 (one of each sets the homing sequence starting with
> 0) which brings that logic into play.
>
> > On Tue, Jul 15, 2014 at 7:50 AM, Gene Heskett <ghesk...@wdtv.com> wrote:
> > > On Tuesday 15 July 2014 10:03:52 Ed Nisley did opine
> > >
> > > And Gene did reply:
> > > > > I M does not shows any working sample
> > > >
> > > > Here's how I did it for my little Sherline mill...
> > > >
> > > > Modify the Sherline control box to accept the wiring. This is an
> > > > example for the tool length probe line, but the same thing happened
> > > > for the home switch input:
> > > >
> > > > http://softsolder.com/2010/04/11/sherline-tool-length-probe-adding-
> > > > a-ja ck/
> > > >
> > > > Connect the physical home switches to the parallel port pin and
> > > > define the HAL "wiring" that connects the input pin to the homing
> > > > signals:
> > > >
> > > > http://softsolder.com/2010/05/11/sherline-cnc-mill-adding-home-swit
> > > > ches /
> > > >
> > > > Define the homing parameters that control the motion on all three
> > > > axes:
> > > >
> > > > http://softsolder.com/2010/05/12/sherline-cnc-mill-defining-home-sw
> > > > itch es/
> > > >
> > > > That configuration worked back in the 2.4 days and has continued to
> > > > work fine ever since, so it should get you reasonably close to your
> > > > goal.
> > > >
> > > > Hope that helps ...
> > >
> > > It gets more complex than that Ed, he is using Mesa cards where the
> > > GPIO port pin number isn't generally the number you use in the hal
> > > file for a parport number.  I needed a spindle run/brake signal on
> > > the db25's pin 17, but had to consult the dmesg output to determine
> > > the actual address of that pin for a 5i25 interface card.  He is
> > > using a 5i20 + 2 daughter cards I know nothing about. I am still
> > > configuring things as I'm just now bringing it (the 5i25) to life.
> > >
> > > 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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>
> 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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> search up to 200,000 lines of code with a free copy of Black Duck
> Code Sight - the same software that powers the world's largest code
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search on Ohloh, the Black Duck Open Hub! Try it now.
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