EPICS Home

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  <2020>  2021  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  <2020>  2021  2022  2023  2024 
<== Date ==> <== Thread ==>
Subject: Re: read RVB and VAL don't match when moving smarAct motors without encoders
From: "Peterson, Kevin M. via Tech-talk" <tech-talk at aps.anl.gov>
To: "Reinhardt, Juliane" <jreinhardt at lbl.gov>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Thu, 12 Nov 2020 00:05:52 +0000 
Juliane,

How does the MCS controller respond to the GST, GA and GP commands for 
an axis without an encoder?  It should be possible to send them using an 
asyn record or a terminal in the vendor software.

The MCS driver assumes every axis will have a sensor and sets the motor 
record's problem bit if the GST command returns an error.

Kevin

On 11/11/20 4:14 PM, Juliane Reinhardt via Tech-talk wrote:
> 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
>
Replies:
Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
References:
read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Navigate by Date:
Prev: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Next: Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt 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  <2020>  2021  2022  2023  2024 
Navigate by Thread:
Prev: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Next: Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt 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  <2020>  2021  2022  2023  2024