---
title: "BACnet supervision with Boss’nX: objects, datapoints and alarms"
description: Declare your BACnet devices in Boss’nX, discover their objects, then create supervision datapoints and their alarms, step by step.
canonical: https://wiki.can-nx.com/en/protocoles/bacnet/
language: en
---

# BACnet supervision with Boss’nX: objects, datapoints and alarms

Boss’nX supervises the BACnet devices of a building. You declare the device with its IP address, port and instance, discover its objects, then create in the supervision components the datapoints that read or command these objects. A datapoint can also carry a threshold alarm or rely on the device’s intrinsic alarm.

## By application

BACnet is configured in Boss’nX, in two places that require separate permissions.

**BACnet devices** (a **Menu** page, **Manage BACnet** permission): declaration of each device and of the gateway that reaches it, discovery and review of its objects.

- [Declare and manage a BACnet device](https://wiki.can-nx.com/en/guides/boss-bacnet-devices/)
- [Discover BACnet objects](https://wiki.can-nx.com/en/guides/boss-bacnet-discovery/)
- [View the objects and understand the Alarm column](https://wiki.can-nx.com/en/guides/boss-bacnet-objects/)

**Supervision components** (**Components**, **Manage components** permission): creation of read or command datapoints, one at a time or in bulk, and of their alarms.

- [Configure a BACnet datapoint](https://wiki.can-nx.com/en/guides/boss-point-bacnet/)
- [Import several BACnet objects](https://wiki.can-nx.com/en/guides/boss-import-bacnet/)
- [Configure a threshold or value alarm](https://wiki.can-nx.com/en/guides/boss-point-alarm/)
- [Check an alarm, its heartbeat and its BACnet source](https://wiki.can-nx.com/en/guides/boss-point-alarm-help/)

## Where to start

1. Gather with the installer the IP address, port and instance of each device, and the gateway that must reach it.
2. [Declare the device](https://wiki.can-nx.com/en/guides/boss-bacnet-devices/) in **BACnet devices**.
3. [Run the discovery of its objects](https://wiki.can-nx.com/en/guides/boss-bacnet-discovery/). If the **Partial** badge appears, check the settings, then run it again.
4. Add the datapoints to the component: [one object at a time](https://wiki.can-nx.com/en/guides/boss-point-bacnet/), with autocomplete or by entering the type and instance, or [several objects at once](https://wiki.can-nx.com/en/guides/boss-import-bacnet/).
5. Save the component, reopen it to review the datapoints, then check the values on its card.

If saving is blocked or an object cannot be found, follow [the BACnet datapoint troubleshooting guide](https://wiki.can-nx.com/en/guides/boss-point-bacnet-help/).

## Good to know

- Declaring a device and discovering its objects creates no datapoint: datapoints are then added in each component.
- The form suggests port **47808** and instance **0**: check the actual values. The device instance is distinct from the instance of each object.
- Bulk import prepares inputs (AI, BI, MSI) for reading, outputs (AO, BO, MSO) for command and values (AV, BV, MSV) for reading and command, up to 250 objects per import.
- For reading, the datapoint works in **COV (push)** or **Poll** mode. For command, **Write priority** ranges from 1 to 16; the suggested value is 16.
- The **Intrinsic alarming active** dot means that the object’s alarm reporting was configured at discovery time, not that an alarm is in progress. In the datapoint, **Alarm source** chooses between **Application threshold** and **BACnet-native (intrinsic)**.
- [Tag alarms](https://wiki.can-nx.com/en/guides/boss-tag-alarms-create/) start from KNX datapoints that have a read address: BACnet datapoints are not offered there.

For supervision as a whole, see [Boss’nX](https://wiki.can-nx.com/en/produits/bossnx/) and [Supervision and visualization](https://wiki.can-nx.com/en/usages/supervision/).

## All BACnet guides

### Alarms and notifications

- [Threshold or value alarm on a KNX or BACnet datapoint in Boss’nX](https://wiki.can-nx.com/en/guides/boss-point-alarm/)

### Protocols, imports and monitoring

- [Declare a BACnet device in Boss’nX: IP address, port and instance](https://wiki.can-nx.com/en/guides/boss-bacnet-devices/)
- [Discover BACnet objects in Boss’nX and fix discovery errors](https://wiki.can-nx.com/en/guides/boss-bacnet-discovery/)
- [View BACnet objects and their intrinsic alarming in Boss’nX](https://wiki.can-nx.com/en/guides/boss-bacnet-objects/)
- [Import several BACnet objects as datapoints of a Boss’nX component](https://wiki.can-nx.com/en/guides/boss-import-bacnet/)
- [Configure a BACnet datapoint in Boss’nX: object, reading and command](https://wiki.can-nx.com/en/guides/boss-point-bacnet/)

### Questions and troubleshooting

- [Boss’nX component alarms: heartbeat, BACnet source and troubleshooting](https://wiki.can-nx.com/en/guides/boss-point-alarm-help/)
- [BACnet datapoint in Boss’nX: troubleshooting and FAQ](https://wiki.can-nx.com/en/guides/boss-point-bacnet-help/)