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11.17 Free Inputs/outputs - Siemens Desigo RXB Technical Manual

Technical manual.
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HandyTool
RXB21.1/FC-10
RXB21.1/FC-11
RXB22.1/FC-12
Key
136/166
Siemens
Building Technologies
Parameter
Description
*137
Reset setpoint offset

11.17 Free inputs/outputs

In a building automation and control system, the free I/Os can be used to interrogate
switch states, for example, 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 "open" or "closed" (see 11.2 ).
If not already in use, the following inputs and outputs can be used freely:
Appli-
Digital inputs
cation
D1
D2
FNC02
FNC04
FNC08
FNC20
Appli-
Digital inputs
cation
D1
D2
FNC10
FNC12
FNC18
Appli-
Digital inputs
cation
D1
D2
FNC03
FNC05
Digital inputs
Triac outputs
X
Relay outputs
X
The setting of parameters for unused inputs is described in Section 11.2, page 126.
RXB (KNX) application library
General and central functions
Range
0 = Disabled
1 = Enabled
Outputs (Triac)
Y1
Y2
X
X
Outputs (Triac)
Y1
Y2
∅ 1)
∅ 1)
1) Heating surface valve
2) Fan-coil valve
Outputs (Triac)
Y1
Y2
If "Not used" (see page 126), may be used freely for other
purposes.
Used by the application
May be used freely for other purposes
Only freely usable with bus valve actuators
Only freely usable with bus valve actuators
All combinations: see CM110672)
Not freely usable
Used by the application
May be used freely in applications with single-speed or
2-speed fan, (see page 114).
FNC Description of functions for FC-10, FC-11, FC-12
Basic setting
Disabled
Outputs
(relay)
Y3
Y4
Q24
Q34
Outputs
(relay)
Y3
Y4
Q24
Q34
X
X
X
X
2)
2)
Outputs (Relay)
Q24
Q34
CM110385en_05
Q44
X
X
28 Feb 2009

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