Experimental Physics and
Industrial Control System

Hi all
I had a quick look at the epics base code but i could not find where the link type was set.
What I mean is the following:
In the dbd file, there are some record types which have some fields of type INLINK/OUTLINK/FWDLINK.
Depending on the cases, it can point to a constant (like DOL field for instance) or to a timestamp (TSE) or to a real PV.
When I looked at the code, there is a notion of link type associated with this type of fields and a link type can be either CA_LINK/CONSTANT/DB_LINK/PV_LINK(=DB+CA_LINK).
However I didn't find where and how the links were set at IOC start up. I'm really interesting in knowing how the IOC knows if the field points to a real PV...
Thanks a lot for your help
Lana

Replies:

Re: How the EPICS IOC determines the link type {CA_LINK/DB_LINK/CONSTANT} Andrew Johnson

References:

EPICS Workshop Fall 2011 Dirk Zimoch

Navigate by Date:

Prev: EPICS Workshop Fall 2011 Dirk Zimoch

Next: Re: How the EPICS IOC determines the link type {CA_LINK/DB_LINK/CONSTANT} Andrew Johnson

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: EPICS Workshop Fall 2011 Dirk Zimoch

Next: Re: How the EPICS IOC determines the link type {CA_LINK/DB_LINK/CONSTANT} Andrew Johnson

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