Re: [CAD_CAM_EDM_DRO] Re: What is G-Code really? (Was Gerber to final PCB)

Hi Tony, Hidera (?),

As Tony mentioned, adding tool aperture data to a Gcode-reading program
will enable you to read Gerber D. I added a table of the apertures I
wanted to my controller program, and a facility to "scale" the Gerber
parms into floating point numbers like one gets from Gcode.

Later, I added a little more to the parser, and was able to read the
aperture and the format parms that Jon mentioned. Not pretty, but I was
able to read the Gcode I was interested in.

To do what you say? I built a linked list to "transverse" all the
Gerber "moves", and then I was able to generate an "isolation" tool
path, that would allow me to "cut around" the traces, and produce a
PCB. Interesting problem!

Alan KM6VV


"Antonius J.M. Groothuizen" wrote:

>
> The 'Tool File' in most RS-274D implementations contains the
> necessary 'aperture' information. RS-274X is an extension to the
> standard, that as one of its features includes the apertures in the
> main file.
>
> At least this is how I understand it.
>
> Tony
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "ghidera2000"
> <ghidera2000@y...> wrote:
> > I just finished a chat with a Gerber format expert and he's telling
> > me that its not possible for G-Code to be 274-D because 274-D has
> no
> > aperature information in it. Only 274-X has enough information to
> > actually mill a workpiece without a human operator to set the
> > aperatures manually.
> >
> > Or is G-Code based on and extended from 274-D?