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Siemens
RXB (KNX) Applications library
CLC and RAD description of functions for CC-02 CM110384en_03
Building Technologies
Room operating modes
28 Feb 2009
5.6
Determine the room operating mode without
a bus (stand-alone)
If no bus is connected, the
Effective room operating mode
of the room controller
depends on the local influences such as window contact, presence detector or room
unit.
The illustration below shows how these influences are processed by the room controller
along with their priority:
PPS2
Local
1.
DI
DI
3.
Controller
3.
Window contact
Presence detector
Room unit
Prio
10
3
85
Z
58
•
The influence of
priorities 1 and 2
is equivalent to permanent
states
.
•
The influence of
priority 3
is treated as
event
.
The key point in time is the moment at which the state changes (edge).
If another source of third priority later changes the state, the
last known change is
valid
.
If there is no bus connection, the controller assumes the following defaults:
•
Use = Building in use.
•
Occupancy =
Occupied.
STOP
Important!
Note