On Thu, 15 Jul 2010, Chris Radek wrote: > Date: Thu, 15 Jul 2010 08:42:14 -0500 > From: Chris Radek <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Spindle at speed & Coordinated Motion problems? > > On Thu, Jul 15, 2010 at 09:16:23AM -0400, Don Stanley wrote: > >> Do you have a suggestion of a preferred way to get a velocity input for >> "motion.spindle-speed-in" from the Motenc encoder? > > The most straightforward way to get this (ddt on the position pin) is > not safe across index. It will go nuts when you get an index reset at > the start of a threading cut. This is a main reason why encoder > drivers should provide the velocity signal. > > Unfortunately I don't think the motenc driver is being maintained by > anyone. I don't think any of the active developers have this > hardware. > > Chris >
Maybe a HAL Comp that uses ddt but tosses crazy velocities (uses previous calculated velocity if index has been detected) would solve the problem Peter Wallace Mesa Electronics ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
