Overview

This guide walks through setting up BACnet/IP communication in Niagara 4 to discover and integrate third-party BACnet devices.

Prerequisites

• Niagara 4.x station running
• Network access to BACnet devices
• BACnet driver license

Steps

1. Add the BACnet Network

1. Open your station in Workbench
2. Navigate to Config > Drivers
3. Right-click > New > BacnetNetwork
4. Name it appropriately (e.g., "BACnetIP")

2. Configure Network Settings

In the BacnetNetwork properties:

• Device Object > Object Identifier: Unique device instance (e.g., 389001)
• Network > Port: Usually 47808 (0xBAC0)
• Network > Broadcast Address: Your subnet broadcast (e.g., 192.168.1.255)

3. Discover Devices

1. Right-click the BacnetNetwork > Actions > Discover
2. Set the discovery range or use "Who-Is" broadcast
3. Wait for devices to appear in the discover pane

4. Add Devices

1. Drag discovered devices to your BacnetNetwork
2. Configure polling intervals as needed
3. Expand device to see available objects

Troubleshooting

• No devices found: Check firewall rules for UDP 47808
• Timeout errors: Verify IP addressing and subnet masks
• Object read failures: Check device segmentation settings