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Siemens
RXB (KNX) application library
FNC Description of functions for FC-10, FC-11, FC-12
CM110385en_05
Building Technologies
Room operating modes
28 Feb 2009
The communication object
Temporary Comfort mode
has two possible states:
State
Description
1 = Trigger
Effective room operating mode
is
Comfort
0 = Not used
Has no effect on the
Effective room operating mode
•
The change of
effective room operating mode
with the
Temporary Comfort mode
during the building-in-use period (defined by the
Use
time schedule)
•
The change of
effective room operating mode
is event-driven, the key factor being
the moment when the communication object is received.
•
The
Effective occupancy
or room unit (both Priority 3) can cause the
effective room
operating mode
to change again
Æ
the last command always applies.
The table below shows the effect of the
Temporary Comfort mode
on the
effective room
operating mode
of the room controller.
Existing effective
room op. mode
Temporary
Comfort mode
New effective
room operating
mode
Comfort
Æ
0 = Not used
No effect
Precomfort
Æ
1 = Trigger
Comfort
Economy
Æ
1 = Trigger
Comfort
during
Temporary Comfort
period
1)
Protection mode
Æ
1 = Trigger
Protection
, no change
Key:
Æ
1 means: "changes to 1"
1)
Comfort
mode is operative for the pre-defined
Temporary Comfort
period (see page
126). The room controller then reverts to
Economy.
5.3.7
Effective room operating mode
KNX
R
CO
S
Central
Local
1.
2.
3.
S
DI
S
S
S
DI
S
3.
Controller
Prio
PPS2
3.
S
For the building automation and control system the
resulting
effective room operating mode
is available to
the building automation and control system as follows:
Effective room operating mode (Output communication object)
Flags Type
Send heartbeat
States
R W C T U
1 0 1 1 0 20.102
DPT_HVACMode
Yes
1 = Comfort
2 = Precomfort
3 = Economy
4 = Protection
Effective
room operating mode
