KNX Technical Reference Manual
ABB i-Bus
®
KNX Yucus
167
12.37.4
VRV mode - Set temperature request - Object no
Object name
Data type
Flags
VRV: Set temperature
request
2 byte DPT 9.001
C, R, T,
VRV: Set temperature
confirmation
2 byte DPT 9,001
C, W, T, U
This communication object is used to control the set temperature of the corresponding
indoor unit in the VRV system, and to obtain the current set temperature status feedback
of the VRV indoor unit. The temperature adjustment range of the set temperature can be
set in the parameter page of "VRV Function-Change Set Value". The VRV page belongs
to the subordinate thermostat, so the request is the output object, and the confirmation is
the input object.
12.37.5
VRV mode - Indoor temperature display- Object no
Object name
Data type
Flags
VRV: Indoor temperature
display (for VRV page
display)
2 byte DPT 9.001
C, W, T, U
This communication object is used for the room temperature displayed on the VRV page.
If the group of objects does not receive the temperature value, there is no room
temperature display on the VRV page.
12.37.6
VRV mode - Error alarm - Object no
Object name
Data type
Flags
VRV: fault alarm
1 byte DPT 9.001
C, W, T, U
VRV: Temperature sensor
failure
1 bit DPT 9,001
C, W, T, U
This communication object is used to receive the alarm signal of "air conditioning
equipment failure" 1Byte and "temperature sensor failure" 1bit. When the thermostat
receives a 1Byte failure alarm, the VRV page will display the alarm information of "air
conditioning equipment failure", when the thermostat receives a 1bit failure alarm, the
VRV page will display the alarm information of "temperature sensor failure". When an
alarm is triggered, all VRV control operations will be locked, and only page turning
operations are supported. When the fault alarm is removed, device will return back to
normal operations.
The value (such as 0) corresponding to the removal of "air conditioning equipment failure"
can be set in the parameter page of "VRV function-change set value", as long as the
1Byte group object of "air conditioning equipment failure" receives the value
corresponding to the failure removal, it will be released the alarm state of "air conditioning
equipment failure".
When the "temperature sensor failure" group object receives the value "0", the alarm state
of "temperature sensor failure" is released. When the fault alarm is removed, device will
return back to normal operations.
