Siemens RDG2 KN Series Basic Documentation

Functions
Communication objects
4
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A6V11545892_en--_c
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 of manager.
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
No alarm
Alarm
1.005
1 bit
CRT
49
Dew point alarm
No alarm
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
No alarm
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.
40
42
44
X1: Temperature
X2: Temperature
U1: Temperature
Temperature
9.001
2 bytes
CRT
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.
Indicate the values of the temperature sensors connected to the
local inputs X1/X2/U1
41
43
45
X1: Digital
X2: Digital
U1: Digital
OFF
ON
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.

Siemens RDG2 KN Series Specifications

General

Brand	Siemens
Model	RDG2 KN Series
Category	Thermostat
Language	English