Description Of Communication Objects - Theben DU 1 Manual

6.3 Description of communication objects

6.3.1 Objects for the dimming actuator
Object 1: Switching ON/OFF
1 = switch on load.
0 = switch off load.
See also: Parameter Switch-on value.
Object 2: Brighter/darker
This object is actuated with 4-bit telegrams (DPT 3,007 Control Dimming).
This function can be used to dim the light up or down
in increments.
In the standard application, telegrams are sent with 64 increments.
IMPORTANT: The response to 4-bit telegrams depends on the
Switching On/Off with a 4-bit telegram parameter from.
See appendix: 4-bit telegrams (brighter/darker)
Object 3: Dimming value
This object can be used to select the desired dimmer setting directly.
Format: 1 byte percentage value.
0 = 0%
255 = 100%
Object 4: Soft switching
A 1 on this object starts a soft switching cycle, i.e.:
The brightness is gradually increased, starting from the minimum brightness.
The dimming value remains constant for the programmed time and is then gradually reduced
after this time has elapsed.
Once the programmed minimum brightness has been reached, the dimming value is reset to
0%.
The cycle can be extended or prematurely terminated via telegrams
This sequence can also be controlled using a time switch if the Time between soft ON and soft
OFF parameter is set to Until soft OFF telegram.
The dimming cycle is then started with a 1 and finished with a 0.
See appendix: Use of the soft switch function
Object 5: Block
Responses to the block being set and cancelled can be configured if the block function has been
activated (Configuration options Channel C1 parameter page).
The block only applies when the object is received, i.e. with 0 the channel is not blocked after
restoration of the bus supply.
If the parameter Behaviour when setting the block = no reaction, a running soft-switch process
will not be interrupted.
Flush-mounted dimming actuator DU 1