At 05:25 PM 1/23/03 +0100, Wouter van Ooijen wrote:
> > You'd have to parse the ladder
> > logic commands and generate tokens, which would be interpreted
> > by subroutines in the PIC. The first part perhaps can be done
> > on a PC.
>
>when you parse the ladder logic anyway, why not generate HLL or even asm
>directly from it?

The few times that I have done PLC type code on a PIC, I implemented it as
a series of state machines.  All the translation between ladder logic and
asm code was done by hand, though.  If I had to do it again, I'd take a
close look at Z-mech to see how much easier it would make the job.

dwayne

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Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
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