Index | Prev | Next

BLO (Bacnet Binary Lighting Output)

This component is a Config object that represents a BACnet structured view object. This type of object acts as a container for references to other BACnet objects, possibly including other structured view objects. It provides an organizational (and potentially hierarchical) interface to BACnet objects in a system.
Figure 161.   BLO properties
Image

This component is available in the bacnetAws palette, bacnetOws palette, and the bacnet palette.

To access these properties, expand Drivers > BacnetAwsNetwork or BacnetNetwork > BacnetAwsDevice or BacnetDevice > Config and double-click BLO.

In addition to the common properties (Status 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.), Instance Number must be unique within the BACnet internetwork. For components (points, schedules, analog inputs, files, groups, multi state inputs, etc.), it must be unique within the device.

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 Name, however, each Object Name must be unique among all server descriptors under the Export Table.

Object Type drop-down list of BACnet objects
Reports the type of object.
Present Value number
While Out Of Service is set to true, this property reflects the last written Present Value.
Status Flags read-only indicator and check boxes
Configures four status flags for BACnet. These options are available to enable detection of specific status conditions.
Out of Service true or false (default)
Affects only the BACnet exposure and access to the source component. If the source (exported) component is a proxy point, the equivalent Enabled property in its ProxyExt is not affected.

true writes the point’s current value to the Present Value property. Often, a remote BACnet client sets (or clears) this Out of Service state.

You can set this property to false if needed.

Blink Warn Enable true or false (default) Notifies occupants that building lights are about to turn off. A blink-warn command is issued by writing a special value to the Present Value.
Egress Time number Constitutes the time in which the light level is held at its current level before turning off. It specifies the egress time in seconds when a Warn Relinquish or Warn Off value is written to the Present Value property.
Egress Active true or false (default)

true whenever the Egress Time for a Warn Relinquish is in effect or Warn Off lighting operation is in effect.

false otherwise.

Priority Array number
Sets up an array of object identifiers that identify priority values.
Relinquish Default Off, On, Warn, Warn Off, Warn Relinquish, Stop

Warn: Executes a blink-warn notification at the specified priority. After the blink-warn notification has been executed, the value at the specified priority remains ON.

Warn Off: Executes a blink-warn notification at the specified priority and then writes the value OFF to the specified slot in the priority array after a delay of Egress Time seconds.

Warn Relinquish: Executes a blink-warn notification at the specified priority and then relinquishes the value at the specified priority slot after a delay of Egress Time seconds.

Related Links

  • Components in the bacnetAws module (Parent Topic)

    • Index | Prev | Next