Operating Instructions

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Siemens RXB (KNX) Applications library CLC and RAD description of functions for CC-02 CM110384en_04
Building Technologies General / central functions 21 Sep 2010
10.15 Free inputs/outputs
In a building automation and control system, the free I/Os can be used to e.g. query
switching states or for direct switch control of another device over the network.
However, these functions are not suitable for time-critical processes (<1 s).
Free inputs can be defined as NC or NO (see 10.2).
If not already in use, the foll
owing inputs and outputs can be used freely:
RXB24.1/CC-02 Appli-
cation
Digital inputs Triac outputs
D1 D2 Y1 Y2 Y3 Y4
CLC01
1 2
 
 
CLC02
3 4
   
RAD01
5 6
 
 
Digital inputs
7
If "Not used" (see page 102), can be used freely.
Triac outputs
X Used by the application.
 Can be used freely.
 Only freely usable with bus valve actuators.
(All combinations: see CM110671).
Parameter setting for free inputs see 10.2, page 102.
10.15.1 Digital inputs on the KNX bus
D1
D2
RXB... Room controller
Digital input 1
Digital input 2
10385Z19en
The following S-mode input and output communication objects are used when taking
advantage of spare inputs and outputs:
Digital input 1 (output communication object)
Digital input 2 (output communication object)
Flags
R W C T U
Type Send heartbeat States
1 0 1 1 0
1.001
DPT_Switch
No
0 (see 10.2)
1
Parameter setting in tool Cause: digital input Effect: bus output
Free: Bus = 1 = Contact closed Contact closed 1
Contact open 0
Free: Bus = 1 = Contact open Contact open 1
Contact closed 0
Key
KNX
R
CO