KNX Network Topology Explorer

Overview of the maximum possible amount of devices in one installation
EN 50090 ISO/IEC 14543-3-x ETS6.3 Compatible Network Active
Total Devices
59,687 All network devices including power supplies
Backbone
257 Programmable devices + power supplies
Areas
15 Logical network sections
Lines
225 15 lines per area (15 × 15)

Note:

    This visualization displays the complete KNX topology with all possible devices. For performance reasons, we recommend viewing one area at a time on systems with limited resources.

Backbone Devices

Programmable devices: 255 (addressed as 0.0.1 to 0.0.255)

Power supplies: 2 (maximum allowed on the backbone)

Total backbone devices: 255 + 2 = 257

Area Couplers and Power Supplies

Area couplers: 15 (addressed as 1.0.0 to 15.0.0)

Power supplies: 1 right after each area coupler

Total area couplers and power supplies: 15 + 15 = 30

Line Couplers and Power Supplies

Line couplers: 225 (addressed as 1.1.0 to 15.15.0)

Power supplies: Up to 8 per line

Total line couplers and power supplies: 225 + (15 × 15 × 8) = 225 + 1,800 = 2,025

Devices in Lines

Programmable devices: 57,375 (addressed as 1.1.1 to 15.15.255)

Total devices in lines: 57,375

Approx. power consumption

Programmable devices use approx. 10 mA: 57,375 * 10 mA = 573,375 mA

Approximate power consumption: ≈ 573,4 A

Total KNX devices (including power supplies): 257 + 30 + 2,025 + 57,375 = 59,687

Backbone Devices