Art. No. SC 1000 KNX
Operating mode switchover
You can activate or switch over the operating modes in various ways. Depending on one
another in priority, activation or change-over is possible by…
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local control on the device by a KNX channel function or push button function of the
extension module (Operating mode switchover, internal).
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The 1-bit communication objects separately available for each operating mode or
alternatively through the KNX objects. In the last case, also through a controller extension.
The following section describes the individual options for changing over the operating modes in
more detail.
Change-over of the operating mode by KNX channel function or push button function
A KNX channel or push button of the push-button extension module can be configured to the
function "operating mode switchover, internal". In this case, it is necessary to further define in
the ETS configuration which operating mode should be activated when a button is pressed. The
"Comfort", "Standby", "Night" and "Frost/heat protection" modes are available for this purpose.
To be able to activate the comfort extension, it is possible to use a presence button either
optionally or in addition. The presence button, just like the operating mode change-over, is an
operating function for the internal controller. The presence button means it is possible to change
to the comfort extension or to deactivate it prematurely when Night or Frost/heat protection
mode (not activated by the "Window status" object) has been activated. Also, it is possible to
change over from the Standby to the Comfort mode when the presence button is pressed.
The function of a status LED of a push-button extension module can be configured irrespective
of the push button function.. For example, it is possible that the controller status LED is
controlled by a separate communication object.
Change-over of the operating mode using KNX communication objects
A distinction is made whether the operating modes should be changed over via separate 1-bit
objects or, alternatively, by the 1-byte KNX objects.
The "Operating mode change-over" parameter in the "Room temperature control -> Controller
general" parameter branch specifies the switching method as follows...
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Operating mode change-over "Via switching (4 x 1 bit)"
There is a separate 1-bit change-over object for each operating mode. Each of these
objects allows the current operating mode to be switched over or to be set, depending on
the priority. Taking account of the priority, a specific hierarchy will result from the operating
mode change-over by the objects, a distinction being made between presence detection by
the presence button (figure 95) or the motion detector (figure 96). In addition, the status of
the window in the room can be evaluated using the "Window status" object, meaning that,
when the window is open, the controller can switch to Frost/heat protection mode,
irrespective of the set operating mode, in order to save energy .
The following table also shows the status of the communication objects and the resulting
operating mode.
Page 181 of 347
Software "Smart Control 501511"
Functional description
