Carbon Dioxide Object; Table 20 Carbon Dioxide Object Properties; Table 21 Status Flags; Table 22 Reliability - Vaisala CARBOCAP GMW90 Series User Manual

Appendix A _________________________________________________________ BACnet Reference

Carbon Dioxide Object

Table 20 Carbon Dioxide Object Properties
Property Data type
(Application Type)
Object_Identifier BACnetObjectIdentifier
Object_Name CharacterString
Object_Type BACnetObjectType
(ENUMERATED)
Present_Value Real
Description CharacterString
Units BACnetEngineeringUnits
(ENUMERATED)
Status_Flags BACnet Status Flags
(BIT STRING)
Reliability BACnet Reliability
(ENUMERATED)
Event State BACnetEventState
(ENUMERATED)
Out_of_Service BOOLEAN
COV_Increment Real
Min_Pres_Value Real
Max_Pres_Value Real
Table 21 Status Flags
Flag
IN_ALARM
FAULT
OVERRIDDEN
OUT_OF_SERVICE
Table 22 Reliability
State
0 NO_FAULT_DETECTED
1 NO_SENSOR
2 OVER_RANGE
3 UNDER_RANGE
7 UNRELIABLE_OTHER
Table 23 Event State
State
0 NORMAL
1 FAULT
VAISALA ________________________________________________________________________ 89
Writable
(Conformance Code)
No (R)
No (R)
No (R)
Yes
(When Oos) (R)
No (O)
No (R)
Yes (when OoS) (R)
Yes (when OoS) (O)
No (R)
Yes (R)
Yes (O)
No (O)
No (O)
State
FALSE
TRUE
FALSE
TRUE
FALSE
FALSE
TRUE
Value or Initial Value
00 00 00 01 (hex)
Object Type = 0,
Instance = 1
"CO2"
0 (Analog Input)
0.0
"Carbon Dioxide"
96 (parts-per-million)
0 (FAULT == FALSE)
0 (NO FAULT
DETECTED)
0 (NORMAL)
0 (FALSE)
NaN (COV reporting
disabled)
0.0 (same as limit for
UNDER_RANGE)
2400 (same as limit for
OVER_RANGE)
Cause
Event State equals 0 (NORMAL)
Event State not 0
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Always FALSE
Present Value may NOT be written via BACnet
Present Value may be written via BACnet
Cause
No contact to measurement module
CO2 level over BAC_CO2_MAX_VALUE
CO2 level under BAC_CO2_MIN_VALUE
Other measurement error
Cause
Reliability equals 0 (NO FAULT DETECTED)
Reliability not 0
Persistence
Nonvolatile
Nonvolatile
Fixed
Volatile
Nonvolatile
Nonvolatile
Volatile
Volatile
Volatile
Volatile
Nonvolatile
Nonvolatile
Nonvolatile
1)