ABB i-bus KNX Product Manual page 144

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ABB i-bus KNX
Commissioning
No.
33
This communication object is enabled if in
brightness value is set with the option yes: via separate object "Brightness value/status".
Telegram value:
This communication object reports back the current brightness value of the lighting group. The value of the communication
object updates itself during a dimming process, staircase lighting time curve or scene sequence.
It is possible to parameterize when a status telegram is sent. The status can be sent after a change and/or after request.
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Via this communication object, the relative dimming telegram is received for the respective lighting group. They are
dimming telegrams BRIGHTER, DARKER and STOP. After a START telegram is received, the brightness value is changed
in the defined direction with the parameterized speed. If a STOP telegram is received before the dim process ends or the
maximum or minimum dimming value is reached, the dimming process is interrupted and the received brightness value is
retained.
If the dimming values are above or below the max. or min. dimming values (dimming thresholds), the respective dimming
threshold is set. If the dimming values are above or below the max. or min. dimming values (dimming thresholds), the
respective dimming threshold is set.
This communication object is not available with a parameterized additional function.
Owing to DALI functionality (dimming step 200 ms), the step-by-step dimming rarely used in KNX is only conditionally
supported. A small KNX dimming step can trigger a larger DALI dimming step under certain conditions.
In addition to the control telegrams and status responses of the lighting groups, there is the possibility to
set the fault status for the lighting group on the KNX via a separate communication object for every lighting
group.
142 2CDC507128D0202 | DLR/A 4.8.1.1
Function
Status brightness value
Parameter window - Gx
0 = OFF
...
255 = 100 %, max. brightness value
Relative dimming
Object name
Group x
Status, page 73, the parameter Status response of
Group x
Data type Flags
1 bit C, R, T
DPT 5.001
1 bit C, W
DPT 3.007