User Manual

Functions
Communication objects (S
-
Mode)
4
100 | 146 A6V11545892_en--_a
Obj Object name Function Type/
length
Flags Obj Object name Function Type/
length
Flags
35 Extended comfort
mode status
ON
OFF
1.011
1 bit
CRT 48 Application mode HVAC control
mode
20.105
1 byte
CWU
Indicates the status of Comfort mode extension. 0 Auto (default) Heating and/or cooling
36 External room
temperature value
Temperature 9.001
2 bytes
CWU 1 Heat Heating only
2 Morning warmup* Heating only
The thermostat receives and works with the room temperature
from an external sensor.
3 Cool Cooling only
5 Precool* Cooling only
37 Built-in room
temperature value
Temperature 9.001
2 bytes
CRT 6 OFF Neither heating nor cooling
8 Emergency heat* Heating only
The value of the room temperature measured via built-in sensor or
external sensor is available on bus.
9 Fan only Fan runs at high speed
* Function handled like Heat (1) or Cool (3)
38 Frost alarm Normal
Alarm
1.005
1 bit
CRT 49 Dew point alarm Normal
Alarm
1.005
1 bit
CWU
Sends an alarm if the room temperature is below the frost alarm
setting.
Indicates the status of dew point operation.
39 Heat alarm Normal
Alarm
1.005
1 bit
CRT 50 Enable fan
command value
Enable
Disable
1.003
1 bit
CWU
Sends an alarm if the room temperature is above the heat alarm
setting.
Set fan mode to Auto (disable) or Manual (enable) by a KNX
control unit. If Manual, the value received on Fan command value
(52) will be used to command the fan speed.
Default: Enable
The last interaction wins – either from the local fan mode button or
via bus.
40
42
44
X1: Temperature
X2: Temperature
U1: Temperature
Temperature 9.001
2 bytes
CRT
Indicate the values of the temperature sensors connected to the
local inputs X1/X2/U1
41
43
45
X1: Digital
X2: Digital
U1: Digital
ON
OFF
1.001
1 bit
CRT 51 Fan operation Auto
Manual
1.001
1 bit
CRT
Indicate the status of the digital inputs (adjusted by
P151/P154/P156) including considering of operating action
Indicates the status of the fan mode: Auto (0) or Manual (1).
52 Fan speed value 0...100 % 5.001
1 byte
CWU
46 Heating/Cooling
changeover
(receive)
Heating: 1
Cooling: 0
1.100
1 bit
CWU The fan can be set to a specified speed by a KNX control unit
when manual fan operation is enabled.
Changeover information received via bus.
Default: Current mode before power down.
The same function is also available via local multifunctional input
X1/X2/U1 (P150, P153, P155).
Only one input source must be used, either local input X1/X2/U1or
KNX bus.
Speed Fan command value
(physical KNX value)
1 1...33 % (1…85)
2 34…67 % (86...170)
3 68…100 % (171…255)
47 Heating/Cooling
mode status (send)
Heating: 1
Cooling: 0
1.100
1 bit
CRT Fan speed "0" is not supported by the thermostat and the fan
speed will remain unchanged.
Sends the current heating or cooling mode of the thermostat.