Vaisala GMW95 - Relative Humidity Object; Table 25 Status Flags; Table 26 Reliability; Table 27 Event State

Appendix A _________________________________________________________ BACnet Reference
VAISALA ________________________________________________________________________ 91
Relative Humidity Object
Table 28 Relative Humidity Object Properties
Property
Data type
(Application Type)
Writable
(Conformance
Code)
Value or Initial Value
Persistence
Object_Identifier
BACnetObjectIdentifier
No (R)
00 00 00 02 (hex)
Object Type = 0,
Instance = 2
Nonvolatile
Object_Name
CharacterString
No (R)
"RH"
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)
"Relative Humidity"
Nonvolatile
Units
BACnetEngineeringUnits
(ENUMERATED)
No (R)
29 (percent-relative-
humidity)
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)
0.0 (same as limit for
UNDER_RANGE)
Nonvolatile
Max_Pres_Value
Real
No (O)
100 (same as limit for
OVER_RANGE)
Nonvolatile
Table 29 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 30 Reliability
State
Cause
0 NO_FAULT_DETECTED
1 NO_SENSOR
No contact to measurement module
2 OVER_RANGE
RH over 100%
3 UNDER_RANGE
RH under 0%
7 UNRELIABLE_OTHER
Other measurement error
Table 31 Event State
State
Cause
0 NORMAL
Reliability equals 0 (NO FAULT DETECTED)
1 FAULT
Reliability not 0