Vaisala HMW90 - Manual (Page 95)

Appendix A _________________________________________________________ BACnet Reference
VAISALA ________________________________________________________________________ 93
Status Flags
Table 21 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
Reliability
Table 22 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
Event State
Table 23 Event State
State Cause
0 NORMAL Reliability equals 0 (NO FAULT
DETECTED)
1 FAULT Reliability not 0
Out of Service
Out of Service value is writable. By Default = FALSE.