RogerN wrote: > Would it be difficult to update the actual position with the position > from the linear encoders? The DRO position would just stomp on the > actual position. Hopefully most of the time the error would be small > and it would require real time DRO position... or perhaps only assign > the DRO value when the axis is moving very slow or stopped. How about when moving at 60 IPM? What is the time delay in the DRO software? I've seen a number of good DROs that have SIGNIFICANT delays in the update, and settle once you slow down. If the serial output from the DRO box has a 1/4 second delay, and the servo is running at 1000 updates a second, you can only re-sync when you KNOW the machine is dead still. A true servo is NEVER dead-still, it is always bouncing between adjacent encoder counts.
Jon ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
