RE: [CAD_CAM_EDM_DRO] Re: I'm curious

Hi Dave,

Do you actually implement ladder logic on the PICs?

I have seen and worked with ladder logic hardware, (that was a long time
ago) and I'm quite familiar with PIC ASM and C programming. But I don't see
any direct way to code ladder logic. Implement a state machine? Or is
there a compiler for ladder logic? I can see that ladder logic could be
expressed as Boolean equations, perhaps one just keeps looping through a few
equations? Just curious.

Or maybe you meant do Gcode parsing in a PIC. This I can understand, I'm
thinking of porting my CNC controller program STEP4 (the motion module) to a
PIC. OK, a BIG PIC!

Alan KM6VV

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of caedave
> Sent: Thursday, July 21, 2005 8:01 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: I'm curious
>
> Good for you, go for it.
>
> PLC's use step logic (Ladder logic). A programming form
> that is understandable to electricians who are used to
> Relays.
>
> If I did intend to go along this route it would be by PIC micro
> controllers.
> Very versatile little beasties (Big users in DCC for model rail buffs [low
> power use])
> have used them on industrial robots.
>
> Dave M.
>