Siemens SIMATIC OpenPCS 7, Руководство по эксплуатации функций

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Example
The following table lists the parameters and their meaning and shows suitable examples.
Parameter Meaning Example Requireme
nt
hMode =
read
Outputs archived messages and
events of a defined period in the past
(comparable with ReadRaw in OPC
Historical Data Access).
Setting a filter to read archived
messages over the last 30
minutes:
OPCHAEServer hMode=read
htStartTime=NOW-30M
bBounds=TRUE
Yes
hMode =
advise
Outputs archived messages and
events starting from a defined time.
After receiving all archived
messages, new messages are sent
as with an active subscription. This
is comparable with AdviseRaw in
OPC Historical Data Access.
Reading archived messages as of
the last 30 minutes:
OPCHAEServer hMode=advise
htStartTime=NOW-30M
The subscription must be active
for this purpose.
Yes
htStartTime Specifies the time at which the
messages and events are read from
the archive.
htStartTime=NOW-30M Yes
htEndTime Specifies the time up to which
messages and events are read from
the archive. if "hMode = read" ist is
set, "NOW" is used as the default
setting.
htEndTime =
2011-09-10T10:00:00.000C
optional
bBounds =
FALSE
● The time stamp of the first
transferred message
>= htStartTime
● The time stamp of the last
transferred message
<= htEndTime
bBounds=FALSE optional
bBounds=
TRUE
● The time stamp of the first
transferred message
<= htStartTime
● The time stamp of the last
transferred message
>= htEndTime
FALSE is the default setting.
bBounds=TRUE optional
OpenPCS 7 interface
6.6 OPC Historical Alarms and Events (OPC "H" A&E)
OpenPCS 7
Function Manual, 05/2012, A5E02780178-02
77