EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

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  <20202021  2022  2023  2024  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  <20202021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: read RVB and VAL don't match when moving smarAct motors without encoders
From: Juliane Reinhardt via Tech-talk <tech-talk at aps.anl.gov>
To: tech-talk at aps.anl.gov
Date: Wed, 11 Nov 2020 14:14:55 -0800
Dear EPICS team,

I have recently been setting up smarAct MCS controllers for a couple of smarAct motors, some of them have encoders and some don't. The 2 motors that don't have encoders don't move although they are connected properly (I assume). When I do "caput motor.VAL 0.5" I get the feedback for old and new VAL and when I check with "caget motor.VAL" it matches. However, the actual "caget motor.RBV" does not change accordingly and the motor did not move.

What is required to move motors without an encoder in this case?

Thanks,
Juliane

--
Juliane Reinhardt, PhD
Project Scientist | ALS Computing Group
Blg. 15-337E | phone: 510-486-4313
jreinhardt at lbl.gov
Lawrence Berkeley National Lab


Replies:
Re: read RVB and VAL don't match when moving smarAct motors without encoders Peterson, Kevin M. via Tech-talk

Navigate by Date:
Prev: RE: LabView-EPICS Integration using SoftIoc Baily, Scott A via Tech-talk
Next: Re: read RVB and VAL don't match when moving smarAct motors without encoders Peterson, Kevin M. via Tech-talk
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  <20202021  2022  2023  2024 
Navigate by Thread:
Prev: Re: Stream device with waveform records Johnson, Andrew N. via Tech-talk
Next: Re: read RVB and VAL don't match when moving smarAct motors without encoders Peterson, Kevin M. via Tech-talk
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  <20202021  2022  2023  2024 
ANJ, 11 Nov 2020 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·