> >>> FWIW, this tripping of the following error was taking place at the > >>> exact same speed ( give or take a couple percent ) with the previous > >>> driver & motor which was set for a /64, and the same step timeings > >>> and this one is set /8, so no way can I convince myself the problem > >>> is the maximum step rate the 5i25's stepgen can do, or that the > >>> driver can eat and be happy. > >>> > >>> I have fiddled with the ini files maxvels, and maxaccels, without a > >>> measureable effect. > >> > >> Sounds like the stepgen maxvel or stepgen maxaccel settings are > >> limiting you, so you are getting a following error. With 3/3 usec step > >> timings you should get close to to 166 KHz. The stepgen maxaccel and > >> stepgen maxvel parameters should be set to about 1.25X the machine > >> acceleration and velocity limits > >> > > Would this be more related to the TP asking for a higher velocity? > > No, the stepgen runs a feedback loop so must have headroom, your symptoms > sound like you are running out of headroom
Yes I have looked into driver for hostmot mesa and could confirm it runs a feedback loop. I have also modified driver to send positions instead and think I got following errors with this to under some conditions but have not checked carefully. > Also, what are the ferror settings? It is a limit then an error should be tripped. Insert an "u" in the middle and you get the word spelled then it happen. ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
