On Monday 23 July 2012 22:16:53 John Stewart did opine: > I've got a D525mw, and every once in a while it'll throw up an RTAI > error. > > At first I thought it was the update manager, but turning that off did > not help. > > my BASE_PERIOD is 30769; I wonder if that is way off the mark? Anyone > with an Intel D525MW willing to tell me what you use? >
I have 2 of them, running at 23000 ns for a BASE_PERIOD. I can run most of the day without encountering a realtime error. I assume you also have the option set in the kernel line of your grub.conf (or menu.lst, depending on the mood of the distro divided by the phase of the moon) isolcpus=1, which reserves the 2nd core for the realtime stuff, and that you have the Hyperthreading option in the bios disabled as that will tear up the validity of the latency reported. > (I'll admit to not knowing *which* latency number to choose from the > stepconf screens, but, my mill seemed to work…) It should, bearing mind mind that 30000 may restrict your choices of microstep rates that are actually usable to the lower values of 8 and under. Going to 23000 will make a noticeable difference in the machines top speed in that event. That also assumes you have stepper voltages high enough to make decent torque at those speeds. 24 is often borderline IMO, my mill is running a 28 volt supply, my lathe a 38 volt under load. 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> is up! Sorry, no fortune this time. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
