Art. No. SC 1000 KNX
Figure 81: Operation concept "long – short or short"
Operation concept "long – short or short":
In the operation concept "long – short or short", the extension module shows the following
behaviour:
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Immediately on pressing the button, the extension module starts time T1 ("time between
short time and long time command") and waits. If the button is released again before T1
has elapsed, the extension module transmits a short time telegram. This telegram can be
used to stop a running drive. A stationary drive rotates the slats by one level.
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If the button is kept depressed after T1 has elapsed, the extension module transmits a long
time telegram and starts time T2 ("slat adjusting time").
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If the button is released within T2, the extension module sends another short time
telegram. This function is used for adjusting the slats of a blind. The function permits
stopping the slats in any position during their rotation.
The "slat adjusting time" should be chosen as required by the drive for a complete rotation
of the slats. If the "slat adjusting time" is selected longer than the complete running time of
the drive, a push button function is possible as well. This means that the drive is active only
when the button is kept depressed.
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If the button is kept depressed longer than T2, the extension module transmits no further
telegram. The drive remains on until the end position is reached.
i
In this operation concept, the extension module will not transmit a telegram immediately
after depressing one side of the rocker. This principle permits detecting a full-surface
operation when the sensor is configured as a rocker.
Single-surface and double-surface operation in the blind function
As a rocker, the device is preprogrammed for double-surface actuation for the Venetian blind
function. This means, for example, that the extension module transmits a telegram for moving
upwards on pressing the left button and a telegram for moving downwards on pressing the right
button.
As a button, the device is preprogrammed for single-surface actuation for the Venetian blind
function. In this case, the extension module alternates between the directions of the long time
telegram (TOGGLE) on each long actuation of the sensor. Several short time telegrams in
succession have the same direction.
The parameter "Command on pressing the button" or Command on pressing the rocker" on the
parameter pages of the buttons or rockers defines the single-surface or double-surface
operation principle for the Venetian blind function.
For the button function, the command issued on pressing the button can basically be selected at
the user's discretion.
Full-surface operation with Venetian blind function
When a rocker is configured for venetian blind operation and if the operation concept "long –
short or short" is used, the extension module needs some time at the beginning of each
operation in order to distinguish between a short and a long operation. When the full-surface
operation is enabled, the extension module can make use of this time span to evaluate the
otherwise invalid simultaneous actuation of both actuation points.
The extension module detects a full-surface operation of a rocker if a control surface is
depressed over a large area so that both buttons of the rocker are actuated.
Full-surface operation must have been detected before the first telegram has been transmitted
by the Venetian blind function (short time or long time). If this is not so, even a full-surface
operation will be interpreted as a wrong operation and not be executed.
Full-surface actuation is independent. It has a communication object of its own an can optionally
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Software "Smart Control 501511"
Functional description
