Technical Manual Glass Push Button II Smart BE-GT2xx.01
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4.3.8 Color temperature (Tunable White)
;
Single-button function
;
Two-button function
With the Tunable White function the color temperature can be controlled in compatible KNX
dimmers and its status can be displayed.
The following figure shows the available settings (here for the two-button function):
Figure 38: Settings - Tunable White
The table below shows all available settings:
ETS-Text
Dynamic range
[Default value]
Comment
Datapoint type for state object
Bar for color
temperature, state in %
Bar for color
temperature, state in
Kelvin
Setting the datapoint type for
the state; If the state is output
in Kelvin, this is scaled from
2700K (= 0%) to 6000K (=
100%)
Table 57: Settings - Tunable White
With color temperature (Tunable White), the light temperature can be controlled. A 4 bit dimming
command is available for the control. This allows a dycle through the color temperature. It is a start-
stop dimming that means as soon as the dimming function becomes active the control loop runs
through the entire range. The dimming process ends either when the lower or upper end is reached
or when the push button is released again. A stop telegram is sent with the release.
The following table shows the available communication objects:
Number
Name
Length
Usage
1
Push button 1 / 1/2
–
Change color
temperature relative
4 Bit
Cycle through the color temperature
3
Push button 1 / 1/2
–
State for color
temperature
1 Byte
Receiving the state of the color temperature
Table 58: Communication objects - Tunable White
