BACnet/IP

Kepware's BACnet Driver integrates building automation systems with industrial apps. Enable real-time data access, monitoring & control. Learn more.

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Details

Overview

BACnet/IP Product Overview

The BACnet/IP driver provides an interface to connect, monitor, and control building automation devices—providing real-time data to a myriad of software applications, from building and energy management systems to enterprise IT networks. It provides connectivity to equipment using the BACnet protocol over IP (often referred to as BACnet/IP or BACnet Annex J). Devices on other BACnet network types may be accessed using BACnet gateway devices.

Performance

Integrates BACnet data into OPC-compliant HMI/SCADA applications
Enables BACnet data to be accessed by leading automation, HMI/SCADA, ERP, Big Data, asset management, and analytics packages via OPC, proprietary protocols, and IT protocols (including MQTT, REST, ODBC, and SNMP)
Supports Automatic Device Discovery
Supports Command Priority, which prioritizes write requests
Supports Application Protocol Data Unit (APDU), which affects message segmentation
Includes Automatic Tag Generation through device interrogation
Supports the following Standard Objects, including most of the required properties: Accumulator, Analog Input, Analog Output, Analog Value, Averaging, Binary Input, Binary Output, Binary Value, Calendar, Command, Device, Event Enrollment, File, Group, Life Safety Point, Life Safety Zone, Loop, Multi-State Input, Multi-State Output, Multi-State Value, Notification Class, Program, Schedule, and Trend Log
Supports Confirmed and Unconfirmed Event Notifications for both intrinsic and algorithmic notifications for several Event States, including Change of Value, Change of State, Out of Range, Unsigned Range, and Command Failure

Protocols

BACnet/IP (Annex J)

Available Languages

English
German
Japanese
Simplified Chinese

Application Support

DDE Format CF_Text and AdvancedDDE
NIO Interface for iFIX
OPC .NET Service (OPC .NET) Version 1.00
OPC Alarms and Events (OPC AE) Version 1.10
OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
OPC Unified Architecture (OPC UA) Clients
SuiteLink and FastDDE for Wonderware

Documents

Release Notes

Access and search all Kepware product release notes here.

Additional Tech Info

Supported Protocol Details

The official BACnet specification "ANSI/ASHRAE Standard 135-2001 BACnet A Data Communication Protocol for Building Automation and Control Networks" describes all aspects of the BACnet protocol. When using Kepware's BACnet/IP device driver, it is recommended that users be familiar with the standard BACnet objects and properties discussed in Clause 12 and the BACnet/IP particulars outlined in Annex J. The specification is available along with many other useful resources through the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) or the official BACnet website at www.bacnet.org.

The Protocol Implementation Conformance Statement (PICS) is available in the BACnet/IP product manual.

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FAQ

BACnet IP FAQ

What is the BACnet IP protocol?

The Building Automation and Control Network (BACnet) protocol is a communication protocol for building automation and control systems. Developed by ASHRAE and adopted as ISO 16484-5, it is commonly used in commercial buildings, campuses, and smart infrastructure environments.

What is the difference between BACnet IP and BACnet over Ethernet?

Kepware’s BACnet IP driver uses IP and UDP for communication over standard IT infrastructures, making it suitable for large-scale or distributed systems. BACnet over Ethernet typically requires specialized configuration and is generally limited to local networks.

What is the difference between Modbus TCP IP and BACnet IP?

Both protocols are used in industrial and building control environments, but they have different approaches. BACnet/IP is an object-oriented protocol designed specifically to support building automation integration, while Modbus TCP/IP is register-based and is typically used for direct communication with equipment and devices.

What devices support BACnet?

BACnet is commonly supported by devices used in building automation and control systems, including HVAC controllers, thermostats, chillers, air handlers, lighting control systems, energy meters, power monitors, access control systems, fire and life safety systems, environmental sensors, building management systems (BMS), SCADA platforms, BACnet gateways, and other BACnet-compatible building automation devices and systems.

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