> Any other ideas ?

Pending your time frame, if you are interested in developing a java based
solution I may be interested in assisting you

a) To use Virtual Breadboard's openVBB framework as the (free) schematic
editor of the ladder logic diagrams
b) To autogenerate java code or even better - an embedlet object heirachy
from the ladder logic diagrams for execution on the new (very very soon ) to
be released uVM PIC Java processor
c) Developing necessary java packages to support the execution of PLC style
code in the com.muvium framework

References
www.virtualbreadboard.com
www.muvium.com
http://sourceforge.net/projects/embedlets/

Jump onto the embedlets list and repost this.. it is VERY similar and
compatible with some of the work we are thinking about over there. Ted Kosan
in particular would be interested in talking about PLC applications of the
embedlets concept.

I have posted this to the embedets list as a lead in..

Just some ideas ;-)

Regards,
James Caska



> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Orbit Communications
> Sent: Saturday, January 25, 2003 10:56 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: PLC help
>
>
> We will be developing our own GUI so that license/cost issues are
> minimized.
>
> The function now is developing an efficient and simple strategy for
> tokenising the Ladder logic statements and executing them from external
> serial flash memory.
>
> The other option was to simply have a library of functions in the
> PIC as an
> "operating system" and write some pseudo-code to represent calls to these
> functions with parameters.
>
> Does anyone know where there is information that describes the output of a
> compiled ladder logic program ?
>
> Any other ideas ?
>
> Kind Regards
>
> David Huisman (CEO)
> -----------------------------------------------------------------------
> ORBIT COMMUNICATIONS - Wireless Solutions that Work
> (Telemetry, Control, Monitoring, Security, HVAC ...)
>
> Website : http://www.orbitcoms.com
> PO Box 4474 Lakehaven
> NSW 2259, AUSTRALIA
> Phone: 61-2-4393-3627
> Fax  : 61-2-4393-3685
> Mobile: 61-413-715-986
> ----- Original Message -----
> From: "William Chops Westfield" <billw@CISCO.COM>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Saturday, January 25, 2003 10:21 AM
> Subject: Re: PLC help
>
>
> > > I have developed a system for one of my customers which works as
> follows:
> > >
> > > 1: Draw a ladder diagram using the schematic editor in Eagle.
> > >
> > > 2: Generate PARTLIST and NETLIST files from the Eagle drawing.
> > >
> > > 3: Parse the PARTLIST and NETLIST to 'compile' the ladder diagram into
> an
> > > intermediate 'P-Code' like language.
> >
> > That's cute.  Do you have to become an Eagle "distributer", or
> do you just
> > insist that the customer buy a copy of at least the schematic editor?
> >
> > BillW
> >
> > --
> > http://www.piclist.com hint: The PICList is archived three different
> > ways.  See http://www.piclist.com/#archives for details.
> >
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>

--
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