RE: [CAD_CAM_EDM_DRO] Machine Options in CAM Software ?

OK, so the reason posts are different, as you have already stated is
different hardware. "bigger/professional/expensive" machines are not
limited to the direction and step process. By utilizing proprietary
hardware they can better / different things like interpolation etc.
There are also a lot of hardware that was built so as to interface with
the available electronics of the time.
For a hobbyist the approx 8000 pulses / sec of a p port may be
sufficient but even a lot of the hobbyist stuff, flash cut, micro
kinetics, winNC, and soon the gecko product utilize other methods of
control ( serial, USB, isa cards, pci cards etc. So the program may not
actually send pulses etc it may send a command to drill a circle with
any number of parameters. Some machines may not understand all the
parameters.


-----Original Message-----
From: Jerry Kimberlin [mailto:kimberln@...]
Sent: Saturday, November 09, 2002 7:53 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Machine Options in CAM Software ?


aussiedude wrote:

>
> I may also be FOS but my understanding is slightly different.
>
> Going the other way.
>
> You draw apart in a cad program.
> You want to convert that part to G codes that your particular machine
> can use to cut with. Or, you write in G code from the start.

My point is that everyone explains it from this direction and that the
explaination obfuscates the understanding. I can write G-code from the
start and I also have an XY table that is driven by a wall-wart power
supply, a couple resistors, one IC, and does this from the parallel
port.

> Each machine varies in its implementation of certain g codes or may
> actually use proprietary codes.

This is true, but why and how does it vary. What hardware does it use
that makes it vary the implementation if it isn't a translator in EEPROM
or ROM that has the G-code standard embeded inside. Why is this
necessary? Why can't you just leave out the EEPROM or ROM and design
the circuitry without it?

> Post processor interprets codes to achieve a certain move / cut.

Yes, but doesn't EMC do this or another final program that outputs step
and direction info to the parallel port?

Cheers,

JerryK

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