TLog (Bacnet Trend Log)
Figure 114. TLog properties
To access this property expand, , double-click TLog
In addition to the common properties (Status, Enable, and Fault Cause), this component has these properties.
| Property | Value | Description |
|---|---|---|
| Poll Frequency | drop-down list (defaults to Normal)
|
References the On Demand Poll Scheduler rates under the NiagaraNetwork’s History Policies container slot.
Configures how often this type of poll occurs. |
| Object Id | drop-down list and number (from 0 to 4194302) |
Identifies each device and component by the type of entity (
Object Id) combined with a unique Instance Number.
For devices (controllers, instruments, meters, etc.), |
| Object Name | text in the format name.name.name.name (default includes the entire component path in the station using period (“/) delimiters between parent.child levels) |
Identifies a BACnet object. This name should be unique within this specific device.
For components, this name includes the entire component path under the station’s Config using period (.) delimiters between parent.child levels. This enforces (externally) the BACnet requirement for unique names for all objects in a device. For a proxy point, this is the default name in the station. You can shorten or edit |
| Object Type | drop-down list of BACnet objects |
Reports the type of object.
|
| Description | text |
Provides additional information, which could include the camera’s geographical location or other unique information.
NOTE: After creation (adding) BACnet file descriptors, note that each descriptor also has additional properties accessible in its
property sheet, along with those seen in the Add and Edit window.
|
| Stop When Full | true or false (default)
|
Controls what happens when the trend log exceeds its capacity. |
| Buffer Size | number | Configures the size of the trend log buffer. |
| Record Count | number |
Configures the number of records to store in the trend log.
|
| Log Buffer | number | Configures the size of the log buffer. |
| Notify Type | (optional) Alarm (default) or Event |
Indicates if the notification is from an alarm or an event. This property applies if the source component has an alarm extension. |
| Notification Class | number (defaults to –1) |
Specifies the notification class used for routing when handling and generating event notifications for this object.
|
| Object Property Reference | additional properties |
Contains the properties related to the referenced object.
|
| Event State | read-only |
Reports the status of the event.
|
| Log Device Object Property | array | Sets up a BACnet array for trend log device objects. |