Configuration Guide User Manual

Micro-PWC CONFIGURATION GUIDE
314 @aGlance/IT Server Interface
11.3.2 Default Attribute Names
If no attribute name is entered when tag configuration is performed to access data in the current database
of a Micro-PWC system, a default attribute name will be provided. Default attribute names are shown in
Table 11-3.
11.3.3 Format of Time-Stamps
In the historical, historical block, archival and archival block databases, a time stamp is stored with col-
lected data. The time and date, in the format described above, are typically used to define the time period
for which data is to be retrieved.
Time and date stamps recognized and returned by the @aGlance/IT server for the Micro-PWC server are
in the format:
HH:MM:SS DD-MMM-YY
where HH is the number of hours since midnight, MM is the number of minutes, and SS is the number of
seconds. The time is followed by the date (day/month/year). Note that the 24 hour clock is used, and the
month is identified by the first three letters of the month name, in English (i.e., JAN, FEB, MAR, APR, MAY,
JUN, JUL, AUG, SEP, OCT, NOV, DEC).
AAG_GetHistory Get a table of historical values. Access data in the historical,
historical block, archival and
archival block databases. The
default attribute name used is HST.
The ARC attribute name can be
used to specify access limited to the
archival database.
AAG_PutHistory Put a table of historical values.
AAG_GetHistEvent Get compressed historical
data
AAG_GetHisStat Get statistical values from a
server
AAG_GetTags Get a list of tagnames. Obtain information on the names
used to identify data.
AAG_GetAttrs Get a list of attribute names.
AAG_Monitor Register a monitor request. Start and cancel monitor mode.
AAG_CancelMonitor Cancel a monitor request.
AAG_Command Execute a server-specific
request
Obtain batch data.
AAG_Shutdown Terminate the server. Maintenance-related method.
Table 11-3. Default Attribute Name
Micro-PWC Database Name
Current database OUT
Historical/archival database HST
Historical/archival block database HST
Table 11-2. Supported @aGlance/IT Methods (Continued)
Method Description Use