Art. No. SC 1000 KNX
4.2.4.2.6 Value transmitter function
For each rocker or button with the function set to "1-byte value transmitter" or "2-byte value
transmitter" the ETS indicates a corresponding object. On the press of a button, the configured
value or the value last stored internally by a value change (see below) will be transmitted to the
bus. In case of the rocker function, different values can be configured or varied for both
buttons.
The status LEDs can be configured independently (see page 161-162).
Value ranges
The "Function" parameter determines the value range used by the push button.
As a 1-byte value transmitter, the extension module can optionally transmit integers from
0 … 255 or relative values within a range of 0 … 100 % (e.g. as dimming value transmitter).
As a 2-byte value transmitter, the extension module can optionally transmit integers from
0 … 65535, temperature values within a range of 0 … 40 °C or brightness values from
0 … 1500 lux.
For each of these ranges, the value that can be transmitted to the bus for each actuation of a
rocker or button is configurable.
Adjustment by means of long button-press
If the value adjustment feature has been enabled in the ETS, the button must be kept
depressed for more than 5 seconds in order to vary the current value of the value transmitter.
The value adjustment function continues to be active until the button is released again. In a
value adjustment, the extension module distinguishes between the following options...
-
The "Starting value in case of value adjustment" parameter defines the original starting
value for the adjustment. Adjustment can begin from the value configured in the ETS, from
the final value of the last adjustment cycle or from the current value of the communication
object, with the last option not being available for the temperature and brightness value
transmitter.
-
The parameter "Direction of value adjustment" defines whether the values will always be
increased ("upwards"), always reduced ("downwards") or alternately increased and
reduced ("toggling").
-
For the value transmitters 0 … 255, 0 … 100 % and 0 … 65535, the "step width" by which
the current value is to be changed during the value adjustment can be specified. In case of
the temperature and the brightness value transmitter, the step widthspecifications (1 °C
and 50 lux) are fixed.
-
The parameter "Time between two telegrams" can be used in connection with the step size
to define the time required to cycle through the full respective value range. This value
defines the time span between two value transmissions.
-
If, during the value adjustment, the extension module detects that the preset step width
would result in the limits being exceeded with the next telegram, it adapts the step width
once in such a way that the respective limit value is transmitted together with last telegram.
Depending on the setting of the parameter "Value adjustment with overflow", the extension
module stops the adjustment at this instance or inserts a pause consisting of two levels and
then continues the adjustment beginning with the other limit value.
Type
Function
Lower numerical limit Upper numerical limit
1-byte value transmitter 0...255
0
255
1-byte value transmitter 0...100 %
0 % (value = 0)
100 % (value = 255)
2-byte value transmitter 0...65535
0
65535
2-byte value transmitter Temperature value 0 °C
40 °C
2-byte value transmitter Brightness value
0 lux
1.500 lux
Value range limits for the different value transmitters
Page 153 of 347
Software "Smart Control 501511"
Functional description
