Overview
EN ISO 22510:2020 (ISO 22510:2019) specifies KNXnet/IP communication - the standardized method to integrate KNX protocol implementations on top of Internet Protocol (IP) networks. It defines how KNX devices operate as KNXnet/IP devices over an IP backbone, enabling faster, scalable data exchange compared with KNX twisted‑pair lines. Published by CEN and aligned with ISO, this standard supersedes EN 13321-2 and is part of the family of standards for open data communication in building automation, controls and building management.
Key Topics
The standard covers technical requirements, message structures and management features needed for KNX over IP:
- Core protocol and KNXnet/IP frames - frame formats and packet structures for transporting KNX telegrams on IP.
- Host protocol independence - rules to allow multiple IP transports.
- Discovery and self‑description - mechanisms for KNXnet/IP device discovery on IP networks.
- Communication channels and data packet structures - channel models and binary formats (see normative annexes for examples).
- Device management specification - configuration, management and minimum device profiles.
- Tunnelling and routing - tunnelling KNX telegrams over IP and routing strategies between KNX lines.
- Remote diagnosis and configuration - remote maintenance, diagnostics and configuration procedures.
- Secured communication - procedures for authenticated and encrypted KNXnet/IP exchanges.
- Minimum supported services and profiles - baseline capabilities required for interoperability.
- Normative annexes: codes, parameter objects, common external messaging interface (cEMI), coupler resources and binary examples.
Applications and Who Uses It
EN ISO 22510:2020 is essential for stakeholders implementing IP‑based KNX solutions:
- Device manufacturers - to design interoperable KNXnet/IP devices and firmware.
- System integrators and installers - for deploying KNX installations that use IP backbones to increase speed and scalability.
- Network architects and IT teams - to plan IP network architecture, discovery and security for building automation.
- Facility managers and building owners - when specifying open, IP‑based automation for smart buildings and residential systems.
- Test labs and certification bodies - to verify compliance, conformance and interoperability of KNXnet/IP implementations.
Practical use cases include bridging KNX lines over Ethernet, remote configuration and diagnostics of KNX devices, and using IP as a fast backbone for distributed building control.
Related Standards
- Superseded: EN 13321‑2 (previous KNX/IP specification)
- Related ISO/CEN series: building automation standards such as the ISO 16484 series (for building automation and control systems)
- Normative annexes in EN ISO 22510 include cEMI and parameter object definitions that support implementation and testing.
Keywords: EN ISO 22510:2020, KNXnet/IP, KNX devices, building automation, open data communication, IP backbone, home and building electronic systems.