Re: Life is just a dream

[Brian Greul <bgreul-at-swbell.net>]

I've sent messages to unsubscribe... how do I get off this list?
----- Original Message -----
From: "Ray Henry" <rehenry-at-up.net>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Friday, May 10, 2002 8:46 AM
Subject: Re: Life is just a dream


>
>
> Joe
>
> Once again you are being bitten by the polarity of a couple of the
variables
> in your ini.  bridgeportio uses two pins on the aux parport to sense and
set
> estop.  The sense one must be correct for your port.  The set one doesn't
> really matter.  You will encounter an error message when you try to come
out
> of estop because bridgeportio expects the sense pin to change when the set
> pin says that the EMC has come out of estop.  Just okay the message and
you
> should be able to run.  I've snipped out the relevant lines below.
>
> ---snipped ini---
> ; digital in bits
>
> ESTOP_SENSE_INDEX         =     1
> <s>
> ; digital in polarity, 0 is inverted, 1 is normal
> ; controller compares with polarity, equal means on, not equal means off
>
> ESTOP_SENSE_POLARITY      =     0
> <s>
> ; digital out bits
> <s>
> ESTOP_WRITE_INDEX         =     10
> <s>
> ; digital out polarity, 0 is inverted, 1 is normal
> ; controller writes the polarity to turn on, opposite of polarity to turn
>  off
> <s>
> ESTOP_WRITE_POLARITY      =     1
> ---end---
>
> You learned a few posts back that the index refers to the pin and that pin
> nuumber is assignable through the ini.  What isn't assignable this way is
the
> logic that relates to the aux signals.  This logic is hard coded in the
I/O
> software.
>
> I don't know what you are doing with the z but in most situations you will
> want a little bit of dwell between the z down command and the start of
> motion.  This can be accomodated by putting a dwell (g4 pnn) on the line
> after the coolant on command.  The problem is that you have to remember to
> put it in your code each time
>
> The same thing can also be accomplished without any need to change the
g-code
> by using the spindle forward and stop because there is already a settable
> dwell there on both ends for spindle brake off and on.  These times are
> settable in the ini using the two variables below.
>
> ; wait times in seconds for spindle brake, release
> SPINDLE_OFF_WAIT          =     1.0
> SPINDLE_ON_WAIT           =     1.5
>
> Hope this helps
>
> Ray
>
>
> On Friday 10 May 2002 02:24, you wrote:
> > Dean,
> >    My son Jason may be close to solving the problem. We are trying to
use
> > mist on and mist off to control the up and down air cylinder of the Z
axis.
> > We had to switch from minimill to bridgeport. Now we are experiencing
> > problems with coming out of e-stop. None of the conventional cures seem
to
> > work. We are using a BDI install with a stg8 board. I believe that most
of
> > my problems in the past have been related to the linkage of the emc
program
> > and the stg board.
> >    I'm actually looking forward to the G-code. At least there should be
a
> > certain amount of predictability.
> >                                                   Joe
> >
> > From: "Dean L. Hedin" <dlh2001-at-comcast.net>
> >
> > >Reply-To: emc-at-nist.gov
> > >To: Multiple recipients of list <emc-at-nist.gov>
> > >Subject: Re: Life is just a dream
> > >Date: Thu, 9 May 2002 01:44:02 -0400 (EDT)
> > >
> > >
> > >I agree with you to some degree.  But I have to admit, I am impressed
> > >with how far I've come since October of last year.
> > >
> > >I am a programmer by trade.  But you know what?  Setting up/configuing
> > >EMC was not the hard part.  The hard parts were aspects of the machine
> > >itself,
> > >and learning the subtleties of g-code and optimal tool paths.
> > >
> > >With the machine (3 axis router) it was the harnessing & hook up of the
> > >controller, proper stepper motor sizing,  limit switches etc...
> > >
> > >With the g-code it was more of an experience thing.  Learning not to
waste
> > >motion.   Using a larger bit whenever possible, etc..
> > >
> > >Where are you at right now Joe?  Maybe we can help you along.
> > >
> > >On Tuesday 07 May 2002 05:08 pm, joe bury wrote:
> > > > List,
> > > >    Some days I wish I never heard of the emc program. It has been
one
> > > > of the most frustrating events of my life. I know there's a learning
> > > > curve
> > >
> > >to
> > >
> > > > most things. But it doesn't apply here. Even when you do the
research
> > >
> > >and
> > >
> > > > put in the time there so many quirks that you can't tell if your
coming
> > >
> > >or
> > >
> > > > going. It keeps you holding on with success  always just around the
> > >
> > >corner.
> > >
> > > > When nist said they want to expand the use of cnc and to open up the
> > >
> > >market
> > >
> > > > this is a laugh. Because the program is not user friendly. You need
to
> > >
> > >be a
> > >
> > > > computer programmer to wade thru the code. It tickles me when a
newbie
> > > > comes on board, if only they knew what lies ahead. This said and
done I
> > > > guess I'll start pounding my head against the wall again tomorrow,
> > >
> > >because
> > >
> > > > I'm not a quitter.
> > > >                                                    Joe Bury
> > > >
> > > > _________________________________________________________________
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> > >
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> >
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