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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
5.3
Determine the room operating mode
in DESIGO (S-mode)
In S-mode, the
effective room operating mode
of the room controller depends on the
central
Use
and
Occupancy
time schedules and/or on local influences such as window
contacts, presence detectors or a room unit.
The diagram below shows the priority of these influences and how they are processed
by the room controller:
103
85Z
55
PPS2
S
Presence detector
Room unit
Occupancy
Building use
Window contact
Central
Local
1.
2.
3.
S
DI
S
S
S
DI
Effective
room op.
mode
S
Effective
occupancy
3.
Controller
Prio
Temporary
Comfort
mode
3.
S
•
The effects of
Priority 1 and Priority 2
are similar in nature to continuous
states
•
The
Priority 3
influences are treated as
events
.
The key factor is the moment at which the state changes (trigger edge).
If the mode is later changed by another source of priority 3,
the last change
applies
.
STOP
Note!