Accessing metric data through BACnet

Viewing Metrics

The following objects are automatically created to provide access to metric data:

Name	Instance	Description
Metrics - Occupant Temperature - mean	AV201	Average occupant temperature during previous hour.
Metrics - Occupant Temperature - min	AV202	Lowest occupant temperature during previous hour.
Metrics - Occupant Temperature - max	AV203	Highest occupant temperature during previous hour.
Metrics - Occupant Humidity - mean	AV211	Average occupant humidity during previous hour.
Metrics - Occupant Humidity - min	AV212	Lowest occupant humidity during previous hour.
Metrics - Occupant Humidity - max	AV213	Highest occupant humidity during previous hour
Metrics - Light Level - mean	AV221	Average light level during previous hour.
Metrics - Light Level - min	AV222	Lowest light level during previous hour.
Metrics - Light Level - max	AV223	Highest light level during previous hour.
Metrics - Sound Level - mean	AV231	Average sound level during previous hour.
Metrics - Sound Level - min	AV232	Lowest sound level during previous hour.
Metrics - Sound Level - max	AV233	Highest sound level during previous hour.
Metrics - Occupancy Utilization	AV241	Percentage of time the space was occupied during previous hour.

Trending Metrics

You can set up Trend Log (TL) objects to monitor the metrics and collect sample data. This allows you to visualize the metrics on a line chart or in a table, or archive them if you'd like to report on them historically.

Forcing Updates

Metrics are normally computed at the beginning of every hour (12:00, 1:00, 2:00, etc.). However, you can force a metrics update at any time.

To force a metrics update:

1. Create object BV292 with the name "Compute Metrics."
2. Command the object to manual mode and set the object value to On.

Deleting Metrics

Metrics are archived for 30 days (available through MQTT). However, you can delete all metrics from the database at any time. Normally, this is done during commissioning to clear any metrics acquired during the installation and setup of the O3.

To delete all metrics:

1. Create object BV291 with the name "Clear Metrics Database."
2. Command the object to manual mode and set the object value to On.