1. Protocol Overview

• Protocol Description: BACnet IP is a communication protocol for building automation and control networks, based on IP networks for data communication and control. It enables interoperability between building devices, supporting connections via Ethernet or Wi-Fi to achieve control and data exchange between devices.
• Application Scenarios: This protocol is widely used in building automation, industrial IoT, and related fields to achieve data acquisition and control through BACnet-compliant devices.
• E2C Trinity Support: E2C Trinity acts as a Client, supporting connection and data acquisition from devices via the BACnet IP protocol, and supports device discovery and communication across different network segments.

2. Prerequisites

Before configuration, ensure the following preparations are completed:

• Hardware Connection
  • Ensure E2C Trinity and target BACnet IP devices are connected to the same LAN via Ethernet cable with proper network connectivity.
  • Connect the debugging PC to the E2C Trinity gateway for configuration.
• Network Parameters
  • Obtain the target device IP address and port number; default port: 47808.
  • Ensure E2C Trinity and devices are on the same network segment with no IP conflicts.
• Device Parameters
  • Prepare the BACnet Device ID (Device Instance Number).
  • Confirm polling interval, BBMD settings (optional), Device ID and other parameters.

3. Configuration Steps

Configure on the E2C Trinity web interface as follows.

3.1 Add Device

Step 1: Open the Entry

Log in to the E2C Trinity management interface. Go to [Data Acquisition] to enter the configuration page.

Two methods are supported: Add Manually (Single Device) or Auto Search (Batch Devices).

Method 1: Add Single Device Manually

1. Add DeviceClick Add Device, enter a unique device name, and select the BACnet IP driver.

1. Complete InformationFill in the page details (do not click Auto Search), then save and submit.Click Publish in the upper right corner to apply the configuration.

Method 2: Auto Search & Add Multiple Devices

1. Add DeviceClick Add Device and select the BACnet IP driver.

1. Auto SearchClick Auto Search, fill in the popup parameters, then click Search.Note: For large projects, run scanning during low communication load or after pausing acquisition to improve stability.

1. Select DevicesCheck multiple devices and click Next to add in batch.Device names are imported by default; edit to ensure uniqueness if needed.

1. Finalize ConfigurationConfirm the following parameters, then click Save (or Save & Configure Tags for quick tag setup).Click Publish in the upper right corner to apply the configuration.

1. Configure TagsIf you click Save & Configure Tags:
2. Left pane: search results; right pane: batch add list.
3. Search by object name/type; switch devices at the top.
4. Select multiple tags and click Subscribe or Poll to add to the right pane.
5. Tag names are auto‑generated (spaces removed); ensure uniqueness per device.
6. Click Save to finish adding devices and tags.

3.2 Add Tag

Two methods: Add Manually (Single Tag) or Auto Search (Batch Tags).

Method 1: Add Single Tag Manually

1. Add TagClick Add Manually, fill in the parameters and save.Repeat to add all required tags.Click Publish in the upper right corner to apply changes.

Method 2: Auto Search & Add Batch Tags

1. Auto SearchClick Auto Search, select desired tags, click Subscribe or Poll to add to the list, then click Save.After editing tags, click Publish to apply.

4. Verification & Troubleshooting

Common Issues

• Device cannot connect:Check IP, port, network connectivity and firewall.
• Data acquisition failed:Verify object type, instance number, data type, polling interval and timeout.
• Where to view logs for issues?
  • Debug Logs

                    System Logs:

5. Appendix

Protocol Data Type Mapping

Data type and permission mapping in E2C Trinity:

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