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Siemens
RXB (KNX) Applications library
CLC and RAD description of functions for CC-02 CM110384en_03
Building Technologies
Select communications mode
28 Feb 2009
Let us know look at the floor plan for company
Sport AG
.
The company required separation of the rooms into two room groups or two
geographical zones (apartm) as follows:
– Conference room (room group 1).
– All other offices (room group 2).
The fan coil units equipped with RXB room controllers were entered in the floor plan,
and the addresses assigned accordingly:
D: 110
G: 2.1.1
D: 111
G: 2.2.1
D: 112
G: 2.3.1
D: 113
G: 2.4.1
D: 114
G: 1.1.1
RMB795
309
308
307
x x
x
x
x
Q Q
x
x
x
1
2
Raumgruppe 2
x x
x
x
x
Q Q
x
x
x
1
2
Room group 1
SA EA
Relay
Setpoint prio
Enable
Conference
Sport Ltd
10
38
5Z
04
en
Room group 2
Relay
Setpoint prio
SA EA
Enable
Office
Office
Conference
room
Office
D = Device address, G = Geographical zone (Apartment . Room . Subzone).
On the KNX bus, several rooms are summarized in a room group via geographical
zone addressing. This address comprises three parts:
Geographical zone:
Apartment . Room . Subzone
(e.g.
2
.
1
.
1
)
A geographical zone
must
be assigned:
– To each RXB room controller.
– To each room group of the RMB795 control station.
Here, all devices to be part of the same room group must have the same
apartment number.
The RMB795 control unit only allows for setting the room group, i.e. the geographical
zone
(apartment)
.
Two room groups for
Sport AG
Key
Room group definition
Important
!
Settings on the control
unit