Re: Aug-30-99 EMC release set free

Ian W. Wright wrote:

> I just installed the update with no problem. However, it didn't clear a
> slight hiccough which I've had from the start and which I wonder if is a
> glitch in the software. When I try to home the axes in Jog(Manual) mode,
> the 'x' axis almost always fails to zero exactly, i.e. it finishes on
> 0.0001 or -0.0001(sometimes -0.0002). The other axes zero exactly. Also
> I have noticed that, if I jog the 'x' axis in 0.001 increments it goes
> 0.0100, 0.0110, 0.0120 etc up but 0.0109, 0.0099, 0.0089 etc down. I
> don't see this as being a particular problem and when running G-code
> scripts in step mode, they always seem to finish on the right figures
> but I thought it may be worth mentioning for Fred's information.

Are you displaying commanded or actual coordinates? Normally you display
actual coordinates so you can see where the machine actually is. You can
select which numbers are displayed from one of the xemc menus. If you
are displaying actual values, you may simply be off a bit, and
increasing the P gain would help. If you are displaying commanded
values, then this is a software problem. I haven't seen this myself but
it could be roundoff in the display code.

--Fred