EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
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: Kevin Peterson via Tech-talk <tech-talk at aps.anl.gov>
To: Juliane Reinhardt <jreinhardt at lbl.gov>, Mark Rivers <rivers at cars.uchicago.edu>
Cc: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Thu, 12 Nov 2020 17:27:17 -0600
The controller is returning an error for both of the position query commands used by the driver: 

2020/11/12 15:11:03.905 192.168.168.200:5000 write 5\
:GP1\\n\
2020/11/12 15:11:03.908 192.168.168.200:5000 read 8\
:E1,129\\n\

2020/11/12 15:11:03.912 192.168.168.200:5000 write 5\
:GA1\\n\
2020/11/12 15:11:03.915 192.168.168.200:5000 read 8\
:E1,129\\n\

The sensor type that is returned is 1:

:GST1\\n\
2020/11/12 15:11:03.912 192.168.168.200:5000 read 7\
:ST1,1\\n\
A sensor type of 1 is a "linear positioner with nano sensor", according to the MCS RS-232 interface documentation.
I don't see any commands that would query a theoretical position of an axis that doesn't have an encoder. If SmarAct can provide that information, we can modify the driver to use it. 

Kevin

On 11/12/20 5:16 PM, Juliane Reinhardt wrote:

Hi Mark,

does the output in the txt attachment make more sense to you?

Cheers,
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
Re: read RVB and VAL don't match when moving smarAct motors without encoders Peterson, Kevin M. via Tech-talk
Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Re: read RVB and VAL don't match when moving smarAct motors without encoders Mark Rivers via Tech-talk
Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Re: read RVB and VAL don't match when moving smarAct motors without encoders Mark Rivers via Tech-talk
Re: read RVB and VAL don't match when moving smarAct motors without encoders Juliane Reinhardt via Tech-talk
Navigate by Date:
Prev: Re: 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: Re: 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 
ANJ, 13 Nov 2020 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·