Vaisala GMW90 - Manual (Page 91)

Appendix A _________________________________________________________ BACnet Reference
VAISALA ________________________________________________________________________ 89
Temperature Object
Table 23 Temperature Object Properties
Property Data type
(Application Type)
Writable
(Conformance
Code)
Value or Initial Value Persistence
Object_Identifier BACnetObjectIdentifier No (R) 00 00 00 03 (hex)
Object Type = 0,
Instance = 3
Nonvolatile
Object_Name CharacterString No (R) "T" Nonvolatile
Object_Type BACnetObjectType
(ENUMERATED)
No (R) 0 (Analog Input) Fixed
Present_Value Real Yes
(When Oos) (R)
0.0 Volatile
Description CharacterString No (O) "Temperature" Nonvolatile
Units BACnetEngineeringUnits
(ENUMERATED)
Yes (R) 62 (degrees-Celsius)
Possible units are
C (62) or F (64).
Nonvolatile
Status_Flags BACnet Status Flags (BIT
STRING)
Yes (when OoS)
(R)
0 (FAULT == FALSE) Volatile
Reliability BACnet Reliability
(ENUMERATED)
Yes (when OoS)
(O)
0 (NO FAULT
DETECTED)
Volatile
Event State BACnetEventState
(ENUMERATED)
No (R) 0 (NORMAL) Volatile
Out_of_Service BOOLEAN Yes (R) 0 (FALSE) Volatile
COV_Increment Real Yes (O) NaN (COV reporting
disabled)
Nonvolatile
Min_Pres_Value Real No (O) -40.0 (same as limit for
UNDER_RANGE)
Nonvolatile
Max_Pres_Value Real No (O) +80.0 (same as limit for
OVER_RANGE)
Nonvolatile
Table 24 Status Flags
Flag State Cause
IN_ALARM FALSE Event State equals 0 (NORMAL)
TRUE Event State not 0
FAULT FALSE Reliability equals 0 (NO FAULT DETECTED)
TRUE Reliability not 0
OVERRIDDEN FALSE Always FALSE
OUT_OF_SERVICE FALSE Present Value may NOT be written via BACnet
TRUE Present Value may be written via BACnet
Table 25 Reliability
State Cause
0 NO_FAULT_DETECTED
1 NO_SENSOR No contact to measurement module
2 OVER_RANGE T over +80 °C
3 UNDER_RANGE T under -40 °C
7 UNRELIABLE_OTHER Other measurement error
Table 26 Event State
State Cause
0 NORMAL Reliability equals 0 (NO FAULT DETECTED)
1 FAULT Reliability not 0