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
10.13 Alarm
Alarming works differently in S-mode and LTE mode.
RXB controller support different alarms:
PPS2 fault If the connection to the room unit is faulty at the room
controller (via PPS2 interface), the information is
transmitted with this alarm message.
Room temp. sensor
error
Sensor interruption or short.
No valid room temperature.
Room air condensation Risk of condensation if temperature drops below
dewpoint temperature.
10.13.1 S-mode
In S-mode, the above alarms are summarized and provided as common alarm.
The alarm message is mapped to the following S-mode output communication object:
Common alarm (output communication object)
Flags
R W C T U
Type Send heartbeat States
1 0 1 1 0 1.005
DPT_Alarm
Yes 0 = No alarm
1 = Alarm
As soon as the cause of the alarm ceases to exist, the alarm message disappears.
In addition, the output
Alarm info provides detailed information:
Alarm info (output communication object)
Flags
R W C T U
Type Send heartbeat Info
1 0 1 1 0 219.001
DPT_AlarmInfo
Yes See Konnex specification
The
Alarm info output can be enabled or disabled via another communication object
(this also affects the LTE mode fault signal):
Enable alarm info (input communication object)
Flags
R W C T U
Type Receive timeout States
0 1 1 0 0 1.003
DPT_Enable
Yes (fixed 42 hours) 0 = Disabled / Off
1 = Enabled / On
KNX
R
CO
Note