[Bdi4emc-help] stepper motor emc
gene.heskett at verizon.net
Fri May 5 03:30:50 CEST 2006
Matt Timmermans wrote:
> Hi Andy,
> If you already have a BDI-based config, you just need to change the
> EMCMOT parameter in the [EMCMOT] section of your ini file from
> "freqmod" to "quickstep".
> If your PERIOD was set too high because of CPU limitations, you can
> probably set it lower. 0.000015 should be fine unless your system is
> very special.
> If your DEFAULT_ACCELERATION and MAX_ACCELERATION are set
> unrealistically high to reduce path errors at corners, go ahead and
> set them to something your steppers can really handle, since the new
> BDI has path error limits.
> If you were avoiding backlash compensation because you were losing
> steps, go ahead and put it back in, since quickstep enforces
> acceleration limits while compensating.
> Hope that helps,
>> From: Andy Holcomb <andyholcomb at comcast.net>
>> Reply-To: "Help and advice for BDI-4
>> users."<bdi4emc-help at lists.ourproject.org>
>> To: bdi4emc-help at lists.ourproject.org
>> Subject: [Bdi4emc-help] stepper motor emc
>> Date: Wed, 03 May 2006 23:23:22 -0500
>> From what I understand there is a new mode for emc to run stepper
>> motors better, I have downloaded and installed bdi 4.44 and installed
>> it. How do I install/run this new mode?
Its good news indeed. Unforch, I'm about 900 miles from where I might
try it out, and will be for another couple of months. I'm trying to
resuscitate a tv station with a burned up antenna and transmission line
& a transmitter that's had close to zero REAL maintainance in its 35
year life so far. Its a Harris dual 25 that ATM might be able to make
10kw of honest power, which was enough to start a fire because the
feedlines and antenna were full of water. This should be interesting
before its all done. I wish they would just let me retire instead of
making the$e offer$ I haven't the good $en$e to turn down.
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