BACnet Secure Connect configuration using MQTT

The O3 Edge allows you to configure and manage your Secure Connect connections using MQTT.

Setting up Secure Connect using MQTT

The O3 currently supports BACnet Secure Connect (BACnet/SC) with a Delta Controls enteliWEB/enteliCLOUD Primary Hub running in auto-config mode, to allow automatic certificate management.

To configure the O3, you must first create a Primary Hub on your site, or select an existing Primary Hub on enteliWEB, after which you can create a Secure Connect connection. For more information about creating a Secure Connect primary hub, see Creating a Secure Connect Hub (Primary).

Once you have a BACnet Secure Connect hub running in enteliWEB or enteliCLOUD, you can then configure and approve the device in MQTT using the following steps:

1. Set the Auto Config URL
2. Enable Secure Connect
3. Approve the device
4. Check connection status

Set the Auto Config URL

1. On your enteliWEB or enteliCLOUD site, click the Secure Connect Primary Hubs tab, and select your primary hub.
2. Select and copy the Auto Config URL.
3. Using MQTT, publish your Auto Config URL, e.g. autoConfigUrl = {"data" "wss://192.168.0.115:56321"}, to the topic setting/bacnet/sc/autoConfigUrl.

You can now enable the Secure Connect connection.

Enable Secure Connect connection

• To enable Secure Connect, publish to the topic setting/bacnet/sc/Enable and write to the data JSON key, i.e. {"data": "true"}

You can now approve the device in enteliWEB.

Approve device in enteliWEB

• From the Secure Connect Primary Hubs tab, select the pending device in your approval queue, and click Approve.

The approved device will join the BACnet/SC network and appear in the corresponding site in enteliWEB.

Check connection status

The following topics can be used to check the status of your Secure Connect connection.

General Connection Status:

events/object/scConnectionStatus

Primary Hub Status

events/object/scPrimaryHubStatus

Failover Hub Status

events/object/scFailoverHubStatus

Disable Secure Connect Connection

To disable your Secure Connect connection:

• Using MQTT, publish to the topic setting/bacnet/sc/Enable and write to the data JSON key, e.g. {"data": "false"}.

The Secure Connect connection is disabled, and the O3 will no longer communicate on the BACnet/SC network.