On 03/19/2020 04:02 PM, Gene Heskett wrote:
Greetings; I am trying to reduce the f/r error in an ATS667 based
encoder.
The index pulse is turned upside down by a reversal of spindel
direction. Tts the nature of the beast to remain in this stable state
until the approach of the triggering ferrous metal causes the first
reversal which the edge ignores, and then goes back true or false as the
ferrous piece crosses the center.
Does anyone see any problems with that?
The index pulse is only used during the initial synch to the
spindle, then the encoder is counted
up and down during reversals, without looking at the index
again. So, rigid tapping doesn't care
that the index signal from the encoder does something
different when the spindle is running in
reverse. It has been this way since I did the first ATS667
encoder hack some years ago.
Jon
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
