User's Guide _______________________________________________________________________
92 ___________________________________________________________________ M211399EN-F
Protocol_Services
Who-Is, I-Am, Who-Has, I-Have and UnconfirmedCOVNotification
services are available only when HMW90 is MS/TP master. Reinitialize
Device service must be password protected. According to BACnet
protocol, password is character string having max 20 characters. Default
password is "1234". Password can be changed through the service port
by using the
BACNET
command. See section Set BACnet Parameters on
Database_revision
This is changed during operation according to section 12.11.35 of
ANSI/ASHRAE standard 135-2008.
Relative Humidity object
This Analog Input Object exists only in the HMW95 model.
Table 20
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
