EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  <20062007  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  <20062007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: Irmis applicative points
From: Andrew Johnson <[email protected]>
To: Lecorche Eric <[email protected]>
Cc: [email protected]
Date: Wed, 15 Nov 2006 09:47:14 -0600
Lecorche Eric wrote:

- The pv-crawler does not detect if one PV is used in several IOCs. Although I could have a small SQL script detecting these mistakes, is there an other way to avoid that ?

It could be perfectly legimate for the same PV name to appear in more than one IOC, as long as the IOCs are in different subnets or use different EPICS_CA_SERVER_PORT settings, which places the PVs in totally different namespaces. As long any PV Gateways between the namespaces either block or rename these PVs this is not necessarily an error.


IRMIS does not currently know anything about different PV namespaces, so its standard crawlers shouldn't be flagging duplicate PV names as mistakes. Maybe there could be a switch to turn on such checking, or a per-IOC setting that indicates which namespace(s) (subnet+port) the PVs are being served into. With that addition, it should be possible to include PV gateways into IRMIS as well...

- Andrew
--
There is considerable overlap between the intelligence of the smartest
bears and the dumbest tourists -- Yosemite National Park Ranger

References:
Irmis applicative points Lecorche Eric

Navigate by Date:
Prev: Irmis applicative points Lecorche Eric
Next: Re: Scaling Database entries Dirk Zimoch
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  <20062007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: Irmis applicative points Lecorche Eric
Next: EtherIP driver, BOOL tags Kay-Uwe Kasemir
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  <20062007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 02 Sep 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·