Operating Instructions

Table Of Contents
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Siemens RXB (KNX) application library RXB Description of functions for FC-10, FC-11, FC-12, FC-13 CM110385en_08
Building Technologies Room operating modes 2013-06-17
The communication object Temporary Comfort mode has two possible states:
State Description
1 = Trigger
Effective room operating mode is Comfort
0 = Not used
Has no effect on the Effective room operating mode
The change of effective room operating mode with the Temporary Comfort mode
during the building-in-use period (defined by the Use time schedule)
The change of effective room operating mode is event-driven, the key factor being
the moment when the communication object is received.
The Effective occupancy or room unit (both Priority 3) can cause the effective room
operating mode to change again the last command always applies.
The table below shows the effect of the Temporary Comfort mode on the effective room
operating mode of the room controller.
Existing effective
room op. mode
Temporary
Comfort mode
New effective room operating
mode
Comfort
0 = Not used
No effect
Precomfort
1 = Trigger
Comfort
Economy
1 = Trigger
Comfort during Temporary Comfort
period
1)
Protection mode
1 = Trigger
Protection, no change
Key: 1 means: "changes to 1"
1) Comfort mode is operative for the pre-defined Temporary Comfort period (see page
143). The room controller then reverts to Economy.
5.3.7 Effective room operating mode
CO
S
Central Local
1.
2.
3.
S
DI
S
S
S
DI
S
3.
Controller
Prio
PPS2
3.
S
For the building automation and control system the
resulting effective room operating mode is available to
the building automation and control system as follows:
Effective room operating mode (Output communication object)
Flags
Type
Send heartbeat
States
R
W
C
T
U
1 0 1 1 0 20.102
DPT_HVACMode
Yes
1 = Comfort
2 = Precomfort
3 = Economy
4 = Protection
Effective
room operating mode