KNX USB Interface 311

 KNX USB Interface 311

This interface is for establish a bidirectional connection between a PC and the KNX installation bus. The USB connector has a galvanic separation from the KNX bus. Both ETS (Engineering Tool Software) versions ETS3 or later and some visualization tools support this interface.


Technical data

Mechanical Data

  • Housing: plastic
  • DIN rail mounted device, width: 1 TE


  • Signal LED (green) for USB-connection
  • Signal LED (yellow) for communication

Power supply

    • The part of circuit for communication over USB is supplied by the connected PC / Laptop, correct operation is signalled by the green LED (USB).

Power consumption: < 200mW

    • The part of circuit for communication over KNX is supplied by KNX bus.

Power consumption: < 100mW



  • KNX connector
  • USB connector type B
  • Wire length max. 5m


  • ETS (Engineering Tool Software) ETS3 or later