Art. No. ..5192KRMTSD
Art. No. ..5194KRMTSD
Presence button
All buttons with their function set to "Presence button" are internally linked with the
"RNST
n
.Button fct.Input/output presence button" object. The parameter "Presence function on
pressing the button" defines the object value transmitted to the bus on pressing a button.
In order to ensure that the object value transmitted in the "Presence TOGGLE" setting is always
the correct one, the presence object of the main controller and the "Presence button" objects of
the controller extensions must be interlinked and have their "Write" flag set. In the extension
objects concerned, this flag is set by default.
It is not possible to program a reaction on release of the button. A long button-press is
evaluated in the same way as short one and switches into the corresponding presence mode
insofar as this is acceptable for the controller.
The status LED of the presence button can indicate both the presence status (setting "Button
function indication active / inactive") and also the actuation of the button. In addition, the usual
setting possibilities of the status LED are configurable as well .
Setpoint shift
The setpoint shift is another available function of the controller extension. It makes use of two
1-byte communication objects with datapoint type 6.010 (integer with sign). This extension
function allows shifting of the basic setpoint for the temperature on a room temperature
controller by pressing a button. Operation of the extension is generally the same as the
operation of the main controller.
A button configured as a setpoint shift button reduces or increases the setpoint shift value on
each press by one step width as specified by the main controller. The direction of the value
adjustment is defined by the parameter "Setpoint shift on pressing the button". Releasing the
button and a long press have no other functions.
Communication with main controller:
In order to enable the controller extension to effect a setpoint shift in a room temperature
controller, the controller must have input and output objects for setpoint shifts. In this case, the
output object of the controller must be linked with the input object of the extension unit and the
input object of the controller must be linked with the output object of the extension via an
independent group address.
All objects are of the same data point type and have the same value range. A setpoint shift is
interpreted by count values: a shift in positive direction is expressed by positive values whereas
a shift in negative direction is represented by negative object values. An object value of "0"
means that no setpoint shift has been activated.
Via the "RNST
n
.Button fct.Input current setpoint shift", the extensions are enabled to determine
the current setpoint shift position. Starting from the value of the communication object, each
button-press on an extension will adjust the setpoint in the corresponding direction by one count
value level. Each time the setpoint is adjusted, the new shift is transmitted to the room
temperature controller via the "RNST
n
.Button fct.Output setpoint value specification" object of
the controller extension. The controller itself checks the received value for the minimum and
maximum temperature limits (see controller documentation) and adjusts the new setpoint shift if
the values are valid. When the new count value is accepted as valid, the controller transfers this
value to its output object for setpoint shifting and retransmits the value to the extension as
positive feedback.
Due to the standard data point type used as the output and input object of the controller
extension and the weighting of the individual level by the controller itself, each extension unit is
able to determine whether a shift took place, in which direction it took place and by how many
levels the setpoint was shifted. This requires that the communication objects are connected on
all controller extensions and the controller.
The information for the step value as feedback from the controller enables the extension to
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Software "Room controller display compact module 146x11"
Functional description
