Do you get those errors with servos Gene? or with steppers! I am interested, since Jon was praising that board so much.
j. 2012/3/30 gene heskett <ghesk...@wdtv.com> > On Friday, March 30, 2012 10:12:25 AM Jan de Kruyf did opine: > > > Yes you are right on the dot there. > > > > j. > > > > On Fri, Mar 30, 2012 at 1:23 PM, Viesturs Lؤپcis > <viesturs.la...@gmail.com>wrote: > > > 2012/3/30 Jan de Kruyf <jan.de.kr...@gmail.com>: > > > > It is the combination that matters Viesturs. > > > > > > Well, I think that there are many factors that matter. > > > My goal was to explain Jeshua and probably other new users that for > > > stepper machines (meaning all the machines, which control motor drives > > > with step/dir signals and do not receive any position feedback - > > > mostly steppers, but it includes also Gecko G320 drives and other, > > > respectively, it is stepper machine from controller point of view) it > > > is much better (in terms of overall benefit and also total cost) to go > > > for a cheap mb + cpu and use external fpga card for hardware step > > > generation rather than get expensive and powerful pc and generate > > > steps in software. > > > Cheaper mb and cpu (many users, including me, are very happy with > > > Intel D510/D525 line of motherboards, that already comes with > > > preinstalled dual-core cpu and costs less than 100 $) will have little > > > higher jitter, but it does not really much matter, because it would > > > not run base thread (most affected by jitter) at all. Several us back > > > or forth do not affect 1ms servo thread. > > > And I am not mentioning all the fpga card benefits, like increased > > > number of i/o pins etc. > > > > > > Viesturs > > While I find the D525MW to be a more capable machine than anything else I > have run my stuff with. The one I am setting up to run the lathe with has, > without using stepconfig because stepconfig says it has a broken pipe when > it tries to move the motor, while I can fire up linuxcnc (using axis) > has already moved the motors above 40 IPM while they are laying on the > bench. > > Its as if intel set out to build the ideal board just for us. > > But I am encountering following errors after the motor has reached speed > and moved a good distance at that speed, but don't know what to adjust that > affects that. > > Hints anyone? > > Cheers, Gene > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > My web page: <http://coyoteden.dyndns-free.com:85/gene> > To err is human, but when the eraser wears out before the pencil, > you're overdoing it a little. > > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
