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Control file
View control record
Data item control record
Alarm control record
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There is one session control record in the file for each recording session. The
first view control record for the session follows immediately.
The view control record contains:
•
Record identifier (the word "view")
•
View name
•
Name of the data file for the view
One view control record exists for each view defined on a recording session.
One or more data item control records that identify the data items in the view
follow each control record. Alarm control and filter control records are
interspersed between the data item control records as appropriate.
The data item control record contains:
•
Record identifier (the word "dataitem").
•
Data item name.
•
Statistic type.
•
In sessions created from playback, the keyword
item whose values were obtained by estimation from data items in other
sessions.
One data item control record exists for each data item that appeared in the
current view's definition. If alarms or filters or both are applied to the data item,
their control records follow that data item's control record. All of the alarm
control records for the data item precede the filter control records for the same
data item.
The alarm control record contains:
•
Record identifier (the word "alarm")
indicates a data
estimated
Historical Server
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