2.2.1 Bacnet Point Description
2.2.1.1 Bacnet Device
2.2.1.2 BACnet Device of VRF IDUs
The Gateway virtualizes VRF units as devices according to the specific type of the VRF units, and
each device has different properties.
Currently, conventional VRF IDU and ODU are involved.
Each air conditioner connected to the Gateway has a unique BACnet device ID.
Format of a BACnet device ID of a VRF unit: ABCDEFG
For example, BACnet device ID 192405
Description: "05" indicates that the device is an IDU (in the range of 0 to 63), the refrigerant system
number is 4, the port number is 2, and the BACnet configuration (BACnet address) on the Gateway
is 19.
In other words, the device is connected to the Gateway through port 2, and the BACnet configuration
(BACnet address) is 19, refrigerant system is 4, and IDU address is 05.
Note: Do not operate an air conditioner too frequently. Otherwise, the internal command queue may
fill up, and commands may not be executed in time and become lost. The recommended interval of
commands is greater than 500 ms.
(1) Device Information Object
Notes:
①Object-identifier: BACnet device ID of a VRF IDU
②Object-name: Unchangeable IDU name in the format of IDU-port number-system
number-IDU address
(2) Object List
2.2 BACnet
FGEABC D
Range
Description VRF unit address
VRF IDU: 0~63
VRF ODU: 96~99
0~7
System number
0~32~400
Port numberBACnet configuration
Port numberBACnet configuration System number VRF unit addressDescription
19 2 4 05
On/Off status
Fault status
Auto mode or not
OnOff Status
Alarm indication
AutoMode
1
2
3
BI
BI
BI
Instance
Parameter
type Parameter name Definition
09
