Vaisala GMW90 - Manual (Page 95)

Appendix A _________________________________________________________ BACnet Reference
VAISALA ________________________________________________________________________ 93
Operation Altitude Object
Set current atmospheric pressure to improve the calculation accuracy of
pressure dependent humidity parameters.
NOTE Pressure and Altitude objects are linked together. If Present Value in one
object is changed, Present Value in another object is changed
accordingly.
Table 38 Operation Altitude Object Parameters
Property Data type Writable Value or Initial Value
Object Identifier BACnet Object Identifier No 00 80 00 02 (hex)
Object Type = 2,
Instance = 2
Object Name Character String No "OPER Altitude"
Object Type BACnet Object Type No 2 (Analog Value)
Present Value Real Yes 0.0
Description Character String No "Operating Altitude"
Units BACnet Engineering Units Yes 31 (meters) or 33 (feet)
Status Flags BACnet Status Flags No 0 (FAULT == FALSE)
Event State BACnet Event State No 0 (NORMAL, does not
change)
Out of Service BOOLEAN No 0 (FALSE)
Table 39 Status Flags
Flag State Cause
IN_ALARM FALSE Always FALSE
FAULT FALSE Always FALSE
OVERRIDDEN FALSE Always FALSE
OUT_OF_SERVICE FALSE Always FALSE