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Siemens
RXB (KNX) Applications library
CLC and RAD description of functions for CC-02 CM110384en_03
Building Technologies
Control sequences
28 Feb 2009
8.1.2
Values representing radiator valve actuator positions
The position of the radiator valve is mapped to the bus.
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 C T U
Type Send
heartbeat
Value
1 0 1 1 0 5.001
DPT_scaling
Yes
0...100%
0 = 0%
255 = 100%
Since EIB/KNX bus actuators are available from a variety of manufacturers, the name
of the S-mode output communication object varies accordingly.
If KNX / EIB bus actuators (S-mode) are integrated in DESIGO, the flags must be
checked: delete read access at actuator!
In LTE mode, the radiator position is transmitted as follows:
Heating surface output
(output)
Possible partner function blocks)
Known partner
devices
ActPosSetpHeatStageB
Geographical zone
352 HVA
HVAC Valve Actuator
---
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 118).
Select
Sequences
.
The two fields at the bottom appear only if "LTE and S-mode" is selected in the
Communication
menu.
STOP
Important!
KNX
R
CO
Note
Reduce bus load
ETS3
Professional
Note