OPC90 Server
stamp accuracy when not en
can be enabled to comply with OPC foundat
abled. The “Allow DCS timestamp Override” option
ion specification concerning sync
Tuesday, Wednesday, etc). Note that this option is mutually
exclusive with the “use DCS Timestamp” option previously discussed. There are
other nodes present (like ABB Bailey consoles) that are configured to
participate in time syncing or are using the ABB Bailey distributed trending
functionality. The
table p
warping algorithm used by
this
reads. When enabled, OPC90 overrides the DCS timestamps to the current PC
timestamp for all points read by OPC clients using the sync read function.
d.) The “Y2k Time Warping” option allows the PC time to remain in the present (year
2000 through 2021) while time syncing the ABB Bailey DCS to calendar years
prior to year 2000 in the range of 1980 to 1999. OPC90 will set the DCS time to
pre 2000 years that have calendars that match the present day calendar. This
option is useful for ABB Bailey systems having controller firmware that is not Y2k
compatible but having control events that must occur based on a specific day of
the week (Monday,
two important factors that must be considered when using this option. The first is
that it must be enabled for all PCs running OPC90 that have the time syncing
option enabled. The second is its use is not recommended for systems that also
have
following
resents the time
option:
Present Year
Mapped to Past Year
2000, 2006, 2017
1995
2001, 2007, 2018
1990
2002, 2013, 2019
1991
2003, 2014
1997
*2004 1999,
1998
2005, 2011
1994
2008 1980
2009, 2015
1998
2010 1999
2012 1984
2016 1988
2020 1992
2021 1999
1/
8/20
2/29/2004 is mapped
8 (matches day of the week),
3 /1/2004 thru 12/31/2004 are mapped to 1999 calendar year.
C clien
th
e tags to import a CSV file into the OPC90
se. Th
c
ly contai
isting devic
ha
rence ex
ored. The file to be imported is specified by the IMPORT_FILE tag. The
has the same name as the CSV file but with a “.LOG”
* 1/ 2004 thru 2/2
04 are mapped to 1998 calendar year,
to 3/1/199
3.) An OP
t can use
e CSV file
e thes
databa
an on
n new blocks to be added within an
isting blocks or new devices will be
ex
e. Lines t
t refe
ign
default directory of C:\Program Files\OPC90 Server\CSV will be assumed
unless otherwise specified with the file name. Setting the IMPORT_READ
tag will request the CSV file to be imported. OPC90 will reset this flag when
the import has been completed. The result of the import will be will be written
to the IMPORT_RESULT tag. A log file that summarizes the result of the
import will also be generated. It is stored in the same directory as the CSV
file imported. It
extension. The log file is a standard text file that can be viewed using
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