Art. No. DS 4092 TS
4.2.4.2.3 Rotary knob function Venetian blind
With the rotary knob function "Venetian blind" it is possible to activate Venetian blinds (incl.
slats) and roller shutters by means of short time and long time telegrams via appropriate
actuators. Similarly, other shading systems, such as roof windows, vertical slats and awnings,
can also be controlled. The direction of the rotary knob movement (clockwise or anticlockwise)
determines the movement direction command (raise / open slats, lower / close slats).
Figure 19: Example of rotary knob function "Venetian blind"
(here: Activation of a blind with slats)
In this function, the rotary knob supports the operation concept "Move - Step". Here, the rotation
angle of the rotary knob (number of notches during a rotary movement) is evaluated during an
operation in order to distinguish between an operation for the blind/shutter movement (MOVE,
UP, DOWN) or slat adjustment (MOVE -> STEP)...
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Immediately after the first notch (minimum rotation angle) the device transmits a long time
telegram (MOVE) to the bus. The drive thereby begins to move.
If, in this case, the drive is already moving in the preset direction, no reaction takes place.
The drive remains on. With a movement command in the opposite direction, the drive
changes over after a short break and moves the blind/shutter in the direction that was last
preset.
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If the rotary knob stops during the operation within the rotation angle preset in the ETS for a
slat adjustment, the device immediately transmits a short time telegram (STEP). This
function is used for adjusting the slats of a blind. This allows slats to be stopped at any
position during their rotation.
The parameter "Maximum rotation angle for slat adjustment" must be set to the expected
control speed of the rotary knob and to the slat travelling time. Small angles should
normally be selected if the operation is slow or the slat travelling time is short. Likewise,
large angles of rotation are to be configured if the control speed is normally faster or the
slat travelling time slow.
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If the operation of the rotary knob lasts longer and the maximum rotation angle for the slat
adjustment is exceeded, the device transmits no STEP telegram. The drive remains on
until the end position is reached.
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Software "Rotary sensor with extensions 10FE1x"
Functional description