Re: [CAD_CAM_EDM_DRO] indexerLPT was re:Beginners software

ballendo@... wrote:

> IndexerLPT works with any programming language which can send and
> receive messages from a device driver. This includes not only BASIC,
> but also Pascal, C, C++, Delphi, etc.

It will also digest a plain text file, I think the command would be
copy filename.xxx prn, or something like that. It runs on pure simple
text, and any means of getting text to the printer port work.

> It does NOT support backlash compensation.

For all his controversy here, Mr batwings has proven that LPT can really
dance with some effort. I don't know the particulars of programming it,
but if you are using basic, I see no reason why one couldn't invoke a
subroutine at a change in axis direction. This would be a bit of a
hassle unless the program could be made to watch for an axis reversal
and automaticly call the appropriate subroutine.
In basic, actual motion commands are sent out as PPRINT commands I
believe, so I really think you could do some pretty powerful stuff with
it, although it would certainly take some time to develop.
I've been considering it for an automated drilling machine since I'd
need to control more than 4 axis.

Jon