Re: G & M Codes?????????????

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Ken Ferrell" <zero-
kool@...> wrote:

> I sure wish someone would tell 3 of the machines that I work with

that let's

> say Scaling for one was the same,

Not part of the standard. This function is added by manufacturers
to gain competitive advantage. This is a non standard feature, like
having a red and a green and a yellow led on the front of a CD
player.

Also the machines you named are not mainstream CNC manufacturers
anymore, possibly due to lack of adherance to standards (
particularly ani-lame), BP-CNC went TU a few years back, and the
Hyundai probably has a Fanuc controller?

> As you knowledgably pointed out, for many functions they are the

same, but

> standardized means "ALL ARE THE SAME" as in a given standard ,

actually a

> dictionary I found gives this example of standardized
>
> "stan.dard.ized, stan.dard.iz.ing, stan.dard.iz.es
>
> 1. To cause to conform to a standard.
> 2. To evaluate by comparing with a standard.
>

The Standard is exactly that. If you are observant, you will see
people constantly suggesting that this or that brainstorm/nightmare
of theirs be added to machine control language or symbology.
Usually from ignorance of what the standard is, or blind refusal to
learn g-code. And then manufacturers add that feature to their
controller and "lock" the user into their brand because they are the
only one with that "feature". That's how some of the wide
variations in the available syntaxes came about.

Then there are other manufacturers that developed a CNC machine, and
CNC language, then discovered too late that there was already a
language in CNC-land. LPT-indexer and Shopbot for instance. There
are many others, but these two are familiar to many in this group.

In addition to this, most CNC users ( speaking from the cad-cam
postprocessor viewpoint) like to personalize their code format in
ways that are non-standard and often illogical from one machine to
the next. The use of standardized NC code would actually make the
CNC program machine independent. Things like using scaling, which
is nonstandard, and is quite easily done in the Cad-Cam program,
rather than the NC-code.

Fred Smith - IMService
http://www.cadcamcadcam.com/hobby