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Siemens
RXB (KNX) application library
FNC Description of functions for FC-10, FC-11, FC-12
CM110385en_05
Building Technologies
Select communication mode
28 Feb 2009
For implementation of the application example, we focus on the floor plan of
Sport Ltd
.
Due to company needs, a subdivision into 2 room groups or 2 “geographical zones
(apartment)” is made:
– Conference room (room group 1)
– All the other rooms are offices (room group 2)
The fan coils, all of which are equipped with RXB room controllers, are already shown
on the floor plan, and the appropriate assignments by means of addresses have been
made:
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)
The combination of several groups to 1 room group is made on the KNX bus by
addressing the "Geographical zone". This address consists of 3 components:
Geographical zone:
Apartment.Room.Subzone
(e.g.
2
.
1
.
1
)
A geographical zone
must
be assigned to:
– Each RXB room controller
– Each room group in the RMB795 central control unit
All devices which, together, shall form
one room group
must be assigned the same
apartment
number.
Sport Ltd
uses 2
room groups
Legend
Definition of
room group
Important