Re: Relation of a DRO to a CNC modification of a machine?

Alan,

Thanks for that advice, I immediately called Shoptask and was given
the contact @ Star-Techno that builds the DRO. They have an option
for output (RS232 port), so I ordered the upgrade to be installed to
my unit.

I am told that the DRO processor may not be "fast" enough to keep up
with CNC controller...however, I imagine I can build in pauses for
error checking of some kind (especially when machining critical
parts).

Thanks again.
Gary

--- In CAD_CAM_EDM_DRO@yahoogroups.com Alan wrote:

> Gary;
>
> As the fellow owner of a CNC'd 3in1 machine, I feel it my duty to
pipe
> up. <G>
>
> If your DRO is the type that uses the standard Chinese "legless
> caliper" type of scale, no, your DRO cannot be connected to the
CNC
> system.
>
> However, if your DRO is a more standard type, where the output of
the
> encoders is conventional quadrature, then there IS a way use the
> feedback from the DRO to the CNC system to "compensate". You'll
need
> (beside the DRO)
>
> a. a "Kulaga/Mauch" DRO input board
> b. a PC with an ISA connector to accept the above board, and
> c. either EMC or DeskNcRT software (there may be others I'm
unaware
> of)
>
> (I'm building exactly such a thing right now for my little Taig
mill,
> as I hope to make simple PCBs and .010" just isn't close enough.)
>
> Hope this helps.
>
> Alan