Re: [CAD_CAM_EDM_DRO] EMC and freqmod

> > Jon Elson wrote:

> Well, if the system gets those jiffies messages without EMC running, then
> I don't know whether different EMC versions will be much help.
> Do you have an un-patched (non-real time) kernel left? I keep my
> stock CDROM kernel around for comparisons. Does that kernel ALSO
> show the jiffies message, or have any other problems?

No, non-realtime kernel does not show those messages. The EMC crashing
problem seemed to disappear when I switched from steppermod to freqmod.
I still get the kernel message but the system seems to be stable unless
I fiddle with the PID tuning on the fly. It has crashed a few times
while trying to set tuning parameters through the GUI.

In steppermod I could get about 10 kHz steprate. So far in freqmod I can
only tune it for about 11 kHz with about .025 following error. I thought
I read somewhere that 30 kHz is attainable in freqmod?

P=75
I=0
D=0
FF0=0
FF1=.75
FF2=0


How do you tell EMC to home up (limit switches), or how do you tell it
is at home (no limit switches) to zero the machine coordinates?

>
> Tom Eldredge? Are you also in Missouri? I'm in the St. Louis area, and
> went to UM-Rolla for 2 years (a long time ago).

I live in the Rosati area, about 5 miles East of St. James. I spent some
time at UMR also.


Terry