Operating Instructions

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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 Control sequences 2013-06-17
8.1.5 Values representing valve actuator positions
Valve positions are available in the following S-mode communication objects:
Heating coil output (Output communication object)
Cooling coil output (Output communication object)
Flags
Type Send heartbeat
Value
R
W
C
T
U
1 0 1 1 0 5.001
DPT_Scaling
yes 0...100% 0 = 0%
255 = 100%
For Desigo integration:
With FNC02 and FNC03 (changeover applications) in S-mode, the valve position is
mapped only to heating coil output.
If you use KNX / EIB bus actuators, check the flags: the reading permission of the
actuator must be disabled!
Since EIB/KNX bus actuators are available from a variety of manufacturers, the
name of their S-mode input communication object varies accordingly.
In LTE mode, the valve position is transmitted as follows:
Heating coil output (Output)
Cooling coil output (Output)
Possible partner function blocks
Known partner
devices
ActPosSetpHeatStageA
ActPosSetpCoolStageA
352 HVA
HVAC Valve Actuator
369 EHEA
Electric Heater Element Actuator
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Geographical zone
In LTE-mode, where directly connected actuators are used rather than bus valve
actuators, the bus load can be reduced by disabling LTE communication for these
outputs (see also page 161).
Select Sequences.
CO
Notes
Reduce bus load
ETS Professional