Bacnet File Descriptor (ServerFileDesc)
All files are accessed using the STREAM_ACCESS method.
Figure 136. Bacnet File Descriptor properties
One way to view these properties after dragging this descriptor to the , is to double-click the ServerFileDesc node in the Nav tree.
In addition to the common properties (Status and Fault Cause), this component has these properties.
| Property | Value | Description |
|---|---|---|
| File Ord | text | Configures the file location. |
| 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 |
| 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.
|
| File Type | text string (defaults to blank) | Specifies the BACnet property, as a text string intended to identify the use of this file. While the default value is blank, the actual exported BACnet File object contains some default values, such as text/plain or application/zip. |
| Archive Time | timestamp | Compares Timestamp against the actual file timestamp in order to set the BACnet property Archive (True if Archive Time < file timestamp, or False if Archive Time > file timestamp).
|
| File Access Method | read-only | Reports the BACnet property that indicates the type of file access supported: Stream Access only.
NOTE: Additional properties in the exported File object exist, even though they are not visible in the Bacnet File Descriptor property
sheet. These properties include:
|