RE: Angular fourth axis wit BDI-TNG version of EMC

["John Guenther" <j.guenther-at-verizon.net>]

Paul,

Well, if I could just get it to even move the fourth axis I would be happy.
I sounds like it is trying, in fact it may be moving the axis at something
like 1 degree every minute or so.  I am not trying any coordinated moves,
just a g0 a90 or g1 a90 f2, neither of which makes any difference in the
motion performance.  I assume that this will all get sorted out in due time
and that some future version of BDI-TNG will properly support four axis
motion.  I realize that these things are mostly out of your control Paul,
and I deeply appreciate the effort you have put into the BDI versions of
EMC.  As far as I am concerned this software is great for 3 axis work and I
will continue to use EMC for my three axis machining.  I know you are
working on this problem and I assume that it is not a simple fix so I will
be patiently waiting for the fix.

Thanks

John Guenther

> -----Original Message-----
> From: emc-at-nist.gov [emc-at-nist.gov]On Behalf Of Paul
> Sent: Tuesday, July 02, 2002 16:29
> To: Multiple recipients of list
> Subject: Re: Angular fourth axis wit BDI-TNG version of EMC
>
>
>
>
> Hi John
>
> Tim, amongst others, have had trouble getting reliable
> performance out of the
> fourth axis - The maximum speed achieved is not as high as could
> be expected,
> and following errors are easily triggered. The answer seems to be
> to use very
> low feed rates on coordinated moves with the A axis.
> The same problem affects steppermod on a 2.2.18-rtl3.0 system, so
> reinstalling BDI-2.1x will not solve the problem.
>
> Regards, Paul.
>
>
> On Tuesday 02 Jul 2002 3:06 am, John Guenther wrote:
> > I am becoming convinced that EMC and my Sherline CNC rotary
> table are not
> > going to get along.  I have EMC configured for the fourth axis
> with these
> > parameters in the emc.ini file:
>
>