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
