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Siemens
RXB (KNX) application library
FNC Description of functions for FC-10, FC-11, FC-12
CM110385en_05
Building Technologies
Control sequences
28 Feb 2009
8.5.2
Position values for tediator valve actuators
The "position" of the radiator is mapped to the bus. See also section 8.1.5.
The
Heating surface output
communication object must NOT be used for applications
for thermal valve actuators to control KNX/EIB valve actuators. With these applications,
the communications objects have
theoretical
valve positions only.
In S-mode, the following communication object is used for this purpose:
Heating surface output (Output communication object)
Flags
R W K T U
Type Send
heartbeat
Value
1 0 1 1 0 5.001
DPT_scaling
yes
0...100%
0 = 0%
255 = 100%
In LTE mode, the "position" of the radiator is transmitted as follows:
Heating surface output (Output)
Possible partner function blocks
Known partner
devices
ActPosSetpHeatStageB
Geographical zone
352 HVA
HVAC Valve Actuator
---
If the LTE bus information is not required, it can be disabled (see pages 90 and 143 for
notes on reducing the load on the bus).
HandyTool
See parameters in the last column of the following table.
Short name
Range
Basic setting
HandyTool
Heating surface outp bus valve
0 = Disabled / Off
1 = Enabled / On
Disabled(0) *086
8.5.3
Heat demand
This application can have two different heat demand signals; one from the air-to-air
heat exchanger and one from the radiator. In KNX –LTE mode, the demand signals are
mapped as 2 bus signals (see
In S-mode, this demand is summarized in
Heating demand room
.
8.5.4
Radiator valve actuator override
See also section 8.1.7.
STOP
Important!
KNX
R
CO
Reducing the bus load
