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  <20122013  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  <20122013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: streamDevice: how to read a value as fast as possible?
From: Martin Konrad <[email protected]>
To: Mark Rivers <[email protected]>, "[email protected]" <[email protected]>
Date: Fri, 21 Dec 2012 23:03:49 +0100
Hi Mark,
> It does lead to record processing.  But it does not lead to CA 
> traffic or archiving load if the value has not changed, because the 
> ai record does not post monitors for value changes if the value 
> change since last processing is less than MDEL
Oh, sure. Actually I got fooled by the device: Each time it sends a
slightly different value but it looked like the same value in camonitor
because all digits shown by camonitor were the same! Increasing MDEL to
a small positive number fixed my problem.

Thank you and merry Christmas

Martin

-- 
Dipl. Phys. Martin Konrad
Technische Universität Darmstadt
Institut für Kernphysik
Schlossgartenstr. 9
64289 Darmstadt
Tel.: +49-6151-16-5121
Fax: +49-6151-16-4321

References:
streamDevice: how to read a value as fast as possible? Martin Konrad
RE: streamDevice: how to read a value as fast as possible? Mark Rivers

Navigate by Date:
Prev: Re: streamDevice: how to read a value as fast as possible? Andrew Johnson
Next: Re: SNL with C Benjamin Franksen
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: streamDevice: how to read a value as fast as possible? Mark Rivers
Next: Re: streamDevice: how to read a value as fast as possible? Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 18 Nov 2013 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·