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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
State
Description
Room operating mode
Effective room operating mode
of room controller
Comfort
Comfort
Precomfort
Precomfort
Economy
Economy
Protection mode
Protection
mode
•
For the room controller, the room operating modes
Comfort, Precomfort
and
Economy
are Priority 3 and can therefore be changed later by a presence detector or room unit.
•
The room operating mode
Protection
has first priority, and the presence detector and
room units are therefore disabled.
5.5.4
Local control of room operating mode via
presence detector
Presence detector
PPS2
Central
(Synco controller)
Local
1.
2.
3.
DI
DI
3.
Controller
3.
Prio
1.
Central (ACS)
0.
A presence detector detects the presence of people in
a room.
The presence detector is connected directly to a digital input of the room controller (see
page 126).
Master/slave applications
It is not possible in LTE mode to transmit the status of the slave presence detector to
the master.
The table below shows the two possible occupancy states and the resulting
effective
room operating mode.
Switching state
Effective room operating mode
Æ
Occupied
(people enter room)
Comfort
Æ
Unoccupied
(people leave room)
Precomfort
if room operating mode =
Comfort
or
Precomfort
Economy
if room operating mode =
Economy
Key:
Æ
Occupied
means "changes to
Occupied
"
Priorities
Note
Effective
room operating mode
