Bacnet Enum Cov Trend Log Ext (bacnet-BacnetEnumCovTrendLogExt)
This extension collects a history for the StatusEnum out value of a component using COV.
Unlike the equivalent standard history extension (EnumCovHistoryExt), you can export the history created by this extension as a fully-compliant BACnet trend log object.
Figure 87. Bacnet Enum Cov Trend Log Ext properties
To access these properties, expand and double-click the BacnetEnumCovTrendLogExt.
In addition to the common properties (Status, Fault Cause and Enabled), this component has these properties.
| Property | Value | Description |
|---|---|---|
| Active Period, Days of the Week | check boxes (all default to enabled) |
Specifies the days of the week to include.
|
| Active Period, Time Range | from and to times (both default to 12 AM EDT |
Configures when the time period starts and ends.
|
| Active | read-only |
Indicates the current state of the trend log based on the
Active Period.
|
| History Name | BFormat string (defaults to %parent.name%) |
Defines a pattern for deriving the name of the history created by this extension. It can be static text or a simple pattern
that allows the actual history name to be derived from the context. The default value (%parent.name%) sets the history name in the Id to the name of the parent of this extension. Changes to this property cause the format to
be reapplied and the history Id in the history config is to be updated.
|
| History Config | additional properties |
Serves as a container for sub-properties used to configure the attributes of the history record stored in the History space.
A separate topic documents these properties. |
| Last record | read-only |
Stores a copy of the most recent record successfully appended to the history for this extension.
|
| Total Record Count | read-only |
Indicates the total number of records collected by the Trend Log object since creation. When the value of Total Record Count
reaches its maximum possible value, the next value it takes is zero.
|