Property Data Type (Application
Datatype)
Writable
(Conforman
ce Code)
Value or Initial
Value
Persistence
Object_List BACnetARRAY[N]of
BACnetObjectIdentifier
N (R) Device Object
AI1 (Relative
Humidity)
AI2
(Temperature)
AI3 (Dewpoint /
Td)
AI4 (Dewpoint /
Tdf)
AI5 (Wet bulb
temperature / Tw)
AI6 (Absolute
humidity / A)
AI7 (Mixing ratio /
X)
AI8 (Enthalpy /
H)
AV1 (Pressure)
Fixed
Max_APDU_Length_A
ccepted
Unsigned16 N (R) 480 Fixed
Max_Master Unsigned16 (0 … 127) Y (R/O) 127 Nonvolatile
Max_Info_Frames Unsigned N (R/O) 1 Fixed
Segmentation_Suppor
ted
BACnetSegmentation
(ENUMERATED)
N (R) 3 (No
segmentation)
Fixed
APDU_Timeout Unsigned N (R) 3000 (ms) Fixed
APDU_Retries Unsigned N (R) 3 Fixed
Device_Address_Bindi
ng
List of
BACnetAddressBindin
g
N (R) NULL Fixed
Database_Revision Unsigned N (R) 0 Volatile
Object_Identifier
Must be unique in BACnet network. As Object_Identifier is 22 bits long, it has a value range of
0 ... 4194303. Each device is assigned a random value in this range at Vaisala factory.
Appendix B – BACnet Reference
61