Page 62 - Advanced Course

KNX ADVANCED COURSE

An alternative solution is the connection of manufacturer-specific sensors to the control
unit which are not configured or commissioned via ETS. They can use e.g. the specified
KNX transfer media such as TP or RF. The commissioning process that is used in this
case is called LTE mode (Logical Tag Extended). This principle functions without using a
PC and thus requires no special KNX knowledge and is therefore also suitable for HVAC
installers or remote PC installers. For commissioning purposes, only the devices which
should communicate with each other are grouped together in a logical connection or in
zones via the hardware. After the programming, they then automatically exchange the
date and formats which have already been defined by the manufacturer. In most cases,
the function is assigned as device-specific or can be set e.g. via on-screen menus and the
control mode can be modified. The communication in the direction of the boiler behaves
as previously described via digital and/or analogue outputs etc. Instead of the LTE mode,
the devices can also be configured and programmed as usual via the S mode and ETS.

Analogue + KNX LTE
digital I/O mode
Central heating control TP or RF
and boiler control if
applicable

Boiler

Figure 36: Connection via an external central controller using LTE mode

Home and Building Management Systems KNX Association
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