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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
5.5
Determine the room operating mode with
Synco (LTE mode)
In LTE-mode the e
ffective room operating mode
of the room controller depends on the
central
Room operating mode
time schedule and/or on local influences such as window
contacts, presence detectors or room units.
The diagram below shows how these influences are processed by the room controller,
and their priority:
PPS2
Central
Local
1.
2.
3.
DI
LTE
DI
3.
Controller
1.
3.
Enable Comfort
LTE
Prio
10
3
85Z
57
en
Central (ACS)
0.
(Synco controller)
Window contact
Presence detector
Room unit
P
rot
ec
ti
on
Room operating
mode
•
If the room operating mode in the ACS (operating booklet) is AUTO, the priorities
1 to 3 apply.
If the room operating mode in the ACS (operating booklet) is
Comfort
,
Precomfort
,
Economy
or
Protection
, these modes have absolute priority ("Prio 0").
•
The effects of
Priority 1 and Priority 2
are similar in nature to
states
, which apply
continuously
•
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!
