Light Scene Function - Gira 5142 00 Product Documentation

4.2.4.4 Light scene function

Scene control
The push button sensor can be used in two different ways as part of a scene control system...
- Each rocker or button can work as a scene extension. This feature makes it possible to
recall or to store scenes which may be stored in other devices (see page 93).
- The push button can independently store up to eight scenes with eight actuator groups.
These internal scenes can be recalled or stored by the rockers or buttons (internal scene
recall) and also by the communication object "B.Scene extension input".
In the following subsections the internal scene function will be dealt with in greater detail.
Scene definition and scene recall
If the internal scenes are to be used, the parameter "Scene function ?" in the parameter node
"Scenes" must be set to "Yes".
The matching data types for the eight scene outputs must then be selected and adapted to the
actuator groups used. The types "Switching", "Value (0 ... 255)" or "Value / blind position (0 ...
100 %)" can be selected. As a rule, Venetian blinds are controlled via two scene outputs. One
output controls the blind height and the other one adjusts the slat position.
There is a separate parameter node available in the ETS for each scene output. The data types
can be selected in this node using the parameters of the same name. The ETS sets the
corresponding communication objects and the additional parameters of the scene commands.
The scene parameters can be set in the parameter node of a scene output for each individual
scene ("scene 1 ... 8"). The setting options are the same for all 8 scenes.
It is possible that the values for the individual scenes preset by the parameters are modified
later on with the storage function (see page 179-180) when the system is in operation. If the
application program is then loaded again with the ETS, these locally adapted values will
normally be overwritten by the parameters. Due to the fact that it may take considerable efforts
to readjust the values for all scenes in the system, the parameter "Overwrite scene values
during ETS download ?" offers the possibility of retaining the scene values stored in operation
without overwriting them.
These internal scenes can be recalled directly via the rockers or buttons (function "Recall
internal scene") and also by another bus device via the "B.Scene extension input"
communication object. This 1 byte communication object supports the evaluation of up to 64
scene numbers. For this reason it must be specified which of the external scene numbers
(1 ... 64) is to recall the internal scene (1 ... 8). This specification is made using the parameters
"Recall scene 1...8 via extension object with scene number" in the "Scenes" parameter node. If
the same scene number is listed for several internal scenes at this point, it is always only the
first of these scenes that will be activated (scene with the lowest scene number).
In some situations there may be the requirement that a group of actuators is not controlled by
all, but only by certain scenes. A classroom, for instance, may require open blinds for the
"Welcome" and "Break" scenes, closed blinds in the "PC presentation" scene and no change in
the "Discussion" scene. In this example, the parameter "Permit transmission ?" in the parameter
node of a scene output can be set to "No" for the "Discussion" scene. The scene output is then
deactivated during the corresponding scene.
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Software "Push button sensor 3 plus"
Functional description
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