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1-byte 2-byte
Unsigned 0
– 255.
0
– 65535
Signed -128
– 127.
-32768
– 32768.
Table 2 Counter Constant values
Scaling Constant : sends a percentage value (configurable) to the bus when
the user touches the button. Under a “
state-dependent
” LED illumination, the
LED will remain on/off depending on whether the current value of the object
matches the one parameterised. This object can also be written from the bus,
which will update the LED according to the new value.
Float Constant : sends a two-byte floating point value (configurable) to the
bus when the user touches the button. The available range is -671088.625 to
670760.9375.
The “
state-dependent
” LED illumination mode is analogous as for the
Scaling Constant and Counter Constant functions.
Enumeration : implements a one-button enumeration control that sends one-
byte (unsigned) values to the KNX bus. This control is completely analogous
to the Enumeration control in pair buttons (see section 2.4.3), however the
object is sent to the bus when the button is pressed (not 1.5 seconds later).
Moreover, in this case there is no option to link it to the display.
The “
state-dependent
” LED mode is not available for this function.
Dimmer : implements a one-button light control that sends orders to the KNX
bus, which can then be executed by light dimmers. These orders consist in:

Switch-on / Switch-off orders (on short presses).

Step dimming orders (on long presses) and the subsequent stop order
once the button is released.
Being a one-button control, the switch orders will alternate (on / off) for
every short press, and so will do the step dimming orders (increase /
decrease) for every long press. However, there are some exceptions to this
alternation: