Hallo 黄松:
After reboot an EPICS database all records are STAT=INVALID, UDF=1.
First Processing of the record will reset the UDF field to 0 and set
STAT to the status that matches the result of the processing - NO_ALARM
if no bad things happen. Your ao-record is an OUT record, so it is ok if
it is UDF INVALID, as long as nobody wrote something to it.
Another point is to initialize it to a reasonable start value - this is
an old EPICS problem, because OUT records have no link field to be
initialized after reboot from another record that provides a readback of
the hardware. If there is any hardware to readback the
"TC:PS:B1:AI1:current" it is Your turn to set your ao-record to this
value after reboot of the IOC.
best regards
Bernhard Kuner
- References:
- problem about Channel Archiver 黄松
- Navigate by Date:
- Prev:
problem about Channel Archiver 黄松
- Next:
RE: problem about Channel Archiver Dalesio, Leo
- 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:
problem about Channel Archiver 黄松
- Next:
RE: problem about Channel Archiver Dalesio, Leo
- 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
|