EPICS Home

Experimental Physics and Industrial Control System


 
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  <20092010  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  <20092010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: CA link behavior
From: Geoff Savage <[email protected]>
To: Tech-talk Talk <[email protected]>
Date: Fri, 13 Nov 2009 13:38:36 -0600
Hi,

I have a passive stringout record in IOC A whose OUTLINK references an mbbo record in IOC B. When I reboot IOC B the value in the stringout record is written to the mbbo record even though the stringout record has not been processed.

A bit more background. The stringout record will be processed by a calc record when a temperature becomes too high. The mbbo record controls the power to a front end board. So the value being written is to power off the front end board whenever the IOC B is rebooted. This is not an optimal situation.

I searched through the CA documentation, record reference manual, and Developer's Guide but found no description of this behavior. Before I start searching through the source code I was wondering if this the expected behavior?

Thanks,  Geoff

Replies:
Re: CA link behavior Andrew Johnson

Navigate by Date:
Prev: Re: asyn problem Eric Norum
Next: Re: CA link behavior Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  <20092010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: Re: asyn problem Eric Norum
Next: Re: CA link behavior Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  <20092010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024