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Function
Internal correction by
controller
Note
K N X
CO
R
Siemens
Building Technologies
• Comfort:
– The Comfort setpoints for heating and cooling are shifted in parallel
– The original spacing heating – cooling is maintained.
The room controller corrects the setpoints as follows following a local shift:
• Precomfort ::
– The values are shifted in parallel to the Comfort values
– The cooling setpoint cannot be lowered following central shift
– The heating setpoint cannot be increased following central shift
• Economy :
– The cooling setpoint cannot be lowered following central shift
– The heating setpoint cannot be increased following central shift
– The value is shifted together with the Precomfort value
• Protection :
– Protection values are absolute
– A minimum spacing between Comfort heating and Comfort cooling of 0.5 K is
maintained
F
.
Setpoints
Sp [°C]
Protection cooling
Economy cooling
Precomfort cooling
Comfort cooling
Comfort heating
Precomfort heating
Economy heating
Protection heating
Upon a change from Comfort and Precomfort to Economy or Protection , the setpoint
shift can be reset (see page 135).
The Effective setpoint offset (last value of local shift via PPS2 / bus) is available in the
following S-mode communication object:
Effective setpoint offset (output communication object)
Flags
Type
R W C T U
1 0 1 1 0 9.002
DPT_Value_Tempd
RXB (KNX) application library
Setpoint calculation
E
.
C
F
0.5 K
D
-
Local setpoint shift
Send heartbeat
Yes
FNC Description of functions for FC-10, FC-11, FC-12
A
.
.
B
.
C
.
C
C
.
.
C
.
D
E
D
F
0.5 K
B
A
C
0
+
Value
Floating point (K)
CM110385en_05
Offset [K]
75/166
28 Feb 2009
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