88
9.16.32 Outside temperature for summer compensation
Number
Name
Object function
Data type
30
Outside temperature for summer compensation
Input
2-byte floating point value
In order to save energy, and to ensure that the temperature difference occurring during entry and exit of a climate-controlled building stays within comfort-
able limits, the reduction of room temperature by cooling devices should be limited as a function of the outside temperature (summer compensation). This,
for example, prevents the air-conditioning system from further reducing the room temperature to 24°C with an outside temperature of 35°C.
This function can only be used with an outside temperature sensor. This 2-byte communication object must then be used to provide the controller with the
current outside temperature.
9.16.33 Summer compensation active
Number
Name
Object function
Data type
31
Summer compensation active
Output
Switching
This 1-bit communication object is used to indicate via the bus whether the summer compensation is active (1) or inactive (0). If it is active, the setpoint
value configured for the cooling mode is increased by the summer compensation function. A decrease of the cooling mode setpoint temperature below
the value calculated by the parameterized summer compensation function is not possible. An increase of the setpoint temperature for the cooling mode
is always possible.
9.16.34 Set value reached
Number
Name
Object function
Data type
32
Set value reached
Output
Switching
When the setpoint set on the device in comfort mode has been reached it is sent by means of value (1) as information to the KNX bus via the 1-bit com-
munication object. The function is started by activating the comfort or presence mode. If the reaching of the setpoint temperature is interfered with by the
preselection of a different operating mode or by adjustment to a new setpoint, value (0) is sent.
9.16.35 Fahrenheit
Number
Name
Object function
Data type
33
1. Fahrenheit
Input / output
Switching
2. Fahrenheit (master)
Input / output
Switching
3. Fahrenheit (slave)
Input / output
Switching
The temperature indication on the display can be changed from Celsius (°C) to Fahrenheit (°F). The conversion from Celsius to Fahrenheit always takes
place in the display unit, since only Celsius values are sent over the KNX bus. The value (0) results in a temperature indication in Celsius, while the value (1)
results in Fahrenheit.
Note:
Item 2:
If the Fahrenheit object is active in the master/slave mode, the Fahrenheit (slave) object must be connected to this object.
Item 3:
If the Fahrenheit object is active in the master/slave mode, the Fahrenheit (master) object must be connected to this object..
9.16.36 Display backlighting
Number
Name
Object function
Data type
34
Display backlighting
Input / output
Switching
The display backlighting is activated with value (1) and deactivated with value (0) via the 1-bit communication object.
Note:
This function is mainly used in rooms where backlighting during the night is considered to be a disturbing factor, such as in hotel rooms and bedrooms.
9.16.37 On/off request
Number
Name
Object function
Data type
35
1. On/off request (master)
Input
Switching
2. On/off request (slave)
Input
Switching
This 1-bit communication object must be connected to the respective slave communication object in order to synchronise the devices in the master/slave
configuration.
Description of application and parameters
Communication objects - Object RTC
