KNX USB Interface 312.1

 KNX USB Interface 312.1

The KNX USB Interface 312.1 is a data interface between a PC or laptop and the KNX installation bus.

The device can be used as a programming interface for ETS® Software and supports KNX Long Frames. Long telegrams enable a faster download to devices that support these telegrams, and it is necessary for KNX Security.

The LEDs on the device indicate the operating status and communication errors on the bus. The USB connector (USB C) is galvanic isolated from the KNX bus.

Wz Schema Knx Usb Interface 312 1 2024 12 02 001

Notes for developers: 

The KNX USB communication is based on HID and cEMI telegram coding according to the KNX specification. To integrate the KNX USB interface in applications running on Windows or Linux the cross-platform SDK kDrive is available from Weinzierl.

In addition to the telegram interface via cEMI, the KNX USB Interface 312.1 includes a complete KNX Stack with communication objects and BAOS protocol V2. Thus, the device offers the possibility to extend devices with USB connection (e.g. boards with embedded Linux) to full KNX devices, which can even be programmed with the ETS.

For more information about this solution and available SDKs please contact WEINZIERL.

Technical data

Mechanical Data

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

Indicators

  • LED (multicolor) for USB
  • LED (multicolor) for operating status
  • LED (multicolor) for KNX

KNX

  • Medium TP
  • Support of KNX Long Frames
  • Object Server: BAOS V2
  • Device model: System B

Power supply

  • USB < 15 mA
  • KNX < 3mA

Connectors

  • KNX connector
  • USB connector type C

Compatibility

  • ETS (Engineering Tool Software) ETS3 or later
  • Falcon Driver (KNX Association)
  • kDriveExpress (Weinzierl)