Yes you are right on the dot there. j.
On Fri, Mar 30, 2012 at 1:23 PM, Viesturs Lācis <[email protected]>wrote: > 2012/3/30 Jan de Kruyf <[email protected]>: > > 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 > > > ------------------------------------------------------------------------------ > 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 > [email protected] > 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
