ABB i-bus KNX Product Manual page 101


ABB i-bus KNX
Commissioning
Light controller controls as "master"
other dimmer actuators
Options:

no: The DLR/A only calculates the control value of the connected lighting for its own lighting group.
The status of the brightness value is only sent via the communication objects Brightness value or
Brightness value/status

yes: The communication object Master brightness value is enabled. Using this communication object,
a slave can be controlled via KNX. The following parameters appear:
no
yes
Time between 2 brightness telegrams
[0...10 s]
Options: 0...10
With this parameter sending of the Master brightness value can be limited. As a result the bus load
can be reduced significantly. This defines the time intervals at which the brightness values are sent
on the KNX. The interval is only relevant for the communication object Master brightness value.
Use function "Master offset brightness"
Options: no
yes

no: The Master offset brightness is not considered or not enabled. An offset is not considered.
An offset is not considered.

The brightness value that the DLR/A sends the communication object Master brightness value
is provided with an offset, i.e., an offset is added or subtracted by the Master brightness value.
Furthermore, the communication object Activate master offset is enabled. The offset can be
activated or deactivated via this communication object. With a deactivated offset (value 0), the
brightness value sent by the communication object Master offset brightness corresponds with
the actual brightness value of the master. With activated offset (value 1), the offset brightness
value is modified in the parameters set in the offset values. The brightness value of the master
is always used as the basis.
Note
The offset is deactivated at KNX bus voltage recovery, reset or download.
Using this function, e.g. the offset can be deactivated in the evening when no natural
brightness is available. Accordingly, both lighting strips are controlled with the same level of
brightness.
DLR/A 4.8.1.1 | 2CDC507128D0202 99