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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
5.4.1
Local control of room operating mode via window
contact input
PPS2
S
Central
Local
1.
3.
S
DI
S
S
DI
3.
Controller
1.
3.
Prio
3.
S
S
If a window is opened, the room controller always
switches to room operating mode
Protection
, i.e. the
heating or cooling output is reduced to a minimum.
The table below shows the
Effective room operating mode
as a function of the
window
contact
input.
Window contact state
Effective room operating mode
Window closed
No effect.
Lower-priority inputs determine the operating mode.
Window open
Protection.
The window contact is connected directly to a digital input on the room controller (see
page 102). Alternatively an EIB/KNX window contact connected to the bus may be
used. The application evaluates both items of information (logic OR operation).
Since EIB/KNX window contacts are available from a variety of manufacturers, the
name of the S-mode output communication object varies accordingly.
Room controller RXB...
Window contact input
EIB / KNX window contact
10385Z10en
Window contact output
OR
Window contact on DI
The following S-mode communication object is used to integrate an EIB/KNX window
contact:
Window contact input (input communication object)
Flags
R W C T U
Type Receive
timeout
States
0 1 1 0 0 1.019
DPT_WindowDoor
No
0 = Closed
1 = Open
Effective room operating
mode
Window contact
KNX
R
CO
