re...
> I tried it and Tim's 5/29 modification does not correct the premature
> stopping problem. I don't think it is a timing problem either. I
> slowed the motor polling task's scan rate down to once a second and
> that first RP always returns the previous moves direction.
The modification affects only motors *using* encoder (or readback-link)
feedback. Janet's hardware has encoder support, but it's not being used, so
midcourse corrections would be done even with the current version of the
motor record.
I should mention that glitches on the limit-switch lines can produce
very similar behavior, and are by **far** the more common cause of it.
So don't everybody with an intermittently jerky motor immediately assume
their hardware is flakey. You might just need some decoupling capacitors.
Tim
- Navigate by Date:
- Prev:
Re: Stops in the motor record Janet Tvedt
- Next:
[no subject] Bill Brown
- Index:
1994
1995
1996
1997
<1998>
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: Stops in the motor record Janet Tvedt
- Next:
Re: Stops in the motor record Hubert Yamada
- Index:
1994
1995
1996
1997
<1998>
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|