Re: Heidenhain Program Examples

>From: Paul Corner <Paul.Corner@...>
>
>On Tue, 12 Oct 1999, you wrote:
> > From: Randolph Lee <boss@...>
> >
> > Thanks Paul,
> >
> > The main problems are with understanding the nesting the docs say
> > that 8 levels of nesting can be used but I can only make one work and
> > they give no examples of deeper nesting...
> >
>
>Hi Randolph
>
> First point - TNCremo was the utility I was tring to think of, TNCRemoNT
>sounds like a WindowsNT version.

The docs say it's the Win95/98/NT version TNCremo is the one I use
with the softPC emulator in the shop now...

>Snip
>26 STOP M25
>27 STOP M02
>
>Here is a program to drill 5 holes, 10mm apart in 3 rows, 20mm apart.

the main differences seem to be in the"M" commands like M25, M03 etc
where I guess TNC is commanding actual motion while the 855 would be
just telling me where to go... I don't see anything like the M
commands in the 855 code; I will try to DL this program to the 855 to
see what it makes of it...

>There is a problem in the way the label calls are handled.
><Quote>
>If an earlier defined label is recalled with no repeats i.e. CALL LBL 1 REP
>then only the contents of that label are recalled { line 2 to line 6 }. When a
>label is recalled with repeats i.e. CALL LBL 2 REP 2/2 then all lines of
>the program from the start of the label definition { line 17 } up to the call
>label line { line 24 } are repeated the number of times requested, in this
>example, twice.
><End Quote>
>
>I tend not to use nesting because of this litlle quirk, when I do, it is
>without repeats. I'm not all that keen on the TNC language, what
>with the memory
>limitation and no G code support, I am switchig to another control system.

Yes I have just not been able to get nesting to work more than one
level deep... I attempted to use it for a psudo peck cycle and it got
totally bollixed

I expect that if EMC ever will run under LinuxPPC (which will require
a RTM for the PPC and also for it to work on one of the builds
supported on the PPC and of course a Parallel card or USB or Firewire
support)then I will go that way when I convert one of my machines...
I think I may convert the Schaublin Lathe as It's spindle is already
controlled by the Freqrol unit that will take serial commands and it
would be easy to pick up another X slide assembly for it from
Sobel... that way I would just need to spin the Clamp grip and swap
the manual unit for the CNC one... SHerling sized steppers should
work on it and if I can get a long travel slide for I may give it a
try...

My shop is too small to give up the use of a Machine to CNC only use
and most of Bridgeport conversions I have seen are no longer much
good as manual mills... since it's rare for me to make more than 20
or 30 of anything the Manual or "MNC" control of the Positip 855 fits
my work quite well I just want to get better use out of it... the
Bolt hole patterns and Pocket milling features in it I use all the
time and the times I have taken the time to write full programs for
it they have gone well

From what I can see the Positip 855 uses a subset to the TNC
'natural language' and my problem is that the info provided on this
language is sketchy at best and mostly consists of the 3 program
fragments I posted (plus a few more in the lathe version of the
manual for when you put the 855 on a turning machine) the Lack of
syntax /command lists and lack of help from the maker and slowed me
down a lot on going further with it...

support for this is a bit complicated by the fact that Heidenhain
has told me that though they provide programing support for the TNC
line out of the US home office in IL. the support for the Positip 855
is supposed to come from the regional Sales person who sold me the
unit... (in my case VanWert in MA) now while they are very nice sales
people at that location they know from Zip about the positip
programing features... ("out of several hundred we have sold you are
the first to ask about them")

the 'teach in ' programing section of the Positip 855 manual is
quite sketchy as well and that is a feature I want to master. but I
find it hard to be perfect when Making parts in that mode and the
teach in is creating some code that I Don't understand from a
debugging standpoint...

Randolph Lee boss@...
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Windshadow Engineering Nantucket Island, MA USA
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