Support

Getting help with BACnet Explorer

Frequently Asked Questions

I can't discover any BACnet devices.

Make sure your Mac and the BACnet devices are on the same network subnet. BACnet/IP discovery uses UDP broadcasts on port 47808. Check that your firewall is not blocking UDP port 47808. Try sending a directed Who-Is to a known device IP. If devices are on a different subnet, configure BBMD registration with the router's IP address.

I can see devices but can't read their objects.

Some BACnet devices require authentication or have restricted access. Verify that the device's APDU timeout and retry counts are appropriate for your network latency. Check that you're using the correct device instance number. Try reading the Device object first (object type 8, instance 0) to verify basic communication.

How do I subscribe to COV notifications?

Discover the device, browse its objects, and select an object that supports COV (most Analog and Binary objects do). Click "Subscribe COV" and the app will start receiving real-time value change notifications. The app sets a one-hour subscription lifetime and renews it automatically; the COV increment is a device property.

How do I view trend log data?

Discover the device, browse its objects, and look for Trend Log or Trend Log Multiple objects (object type 20 or 24). Select the trend log object and click "Read Trend Log" to retrieve historical data. The data will appear in a table with timestamps and values.

How do I restore my purchase on a new Mac?

Purchases are tied to your Apple ID. Sign in to the App Store with the same Apple ID and install the app again. In-app purchases can be restored from the app's About window.

The app crashes or freezes.

Make sure you're running macOS 13 (Ventura) or later. If the app freezes during a BACnet operation, try disconnecting and reconnecting. If the issue persists, contact support with your macOS version, the app version, and what you were doing when it happened.

Contact Support

Email

For bug reports, feature requests, purchase questions, or anything else.

[email protected]

Please include:

  • BACnet Explorer version (find in app → Info)
  • macOS version
  • Mac model (Intel or Apple Silicon)
  • Steps to reproduce the issue

Response Time

We reply within two business days. A full fix for a complex issue may take longer.

Refund Policy

Purchases are made through the App Store. Refunds are handled by Apple: request one at reportaproblem.apple.com.