Vaisala HUMICAP HMW92 - Page 88

User's Guide _______________________________________________________________________
86 ___________________________________________________________________ M211399EN-G
Property
Data type
(Application Type)
Writable
(Conforma
nce Code)
Value or Initial Value
Persistence
Max_APDU_Length_Ac
cepted
Unsigned16
N (R)
244
Fixed
Max_Master
Unsigned16 (0..127)
Y (R/O)
127
Nonvolatile
Max_Info_Frames
Unsigned
N (R/O)
1
Fixed
Segmentation_Supporte
d
BACnetSegmentation
(ENUMERATED)
N (R)
3 (No segmentation)
Fixed
APDU_Timeout
Unsigned
N (R)
3000 (ms)
Fixed
APDU_Retries
Unsigned
N (R)
0
Fixed
Device_Address_Bindin
g
List of
BACnetAddressBinding
N (R)
NULL
Fixed
Database_Revision
Unsigned
N (R)
0
Volatile
Object_Identifier: Must be unique in BACnet network. As Object
Identifier is 22 bits long its value range is 0 ... 4194303. Each device is
assigned a random value in this range at Vaisala factory.
Object_Name: Must be unique in BACnet network. Default object
name contains the name and serial number of the device. For example:
- Device model is HMW95, with serial number G1234567.
- Object_Name is "HMW95_G1234567".
System_Status: System status can be OPERATIONAL (0) or
NON-OPERATIONAL (4). Device goes to NON-OPERATIONAL state
in case of fatal error.
Protocol_Services: Who-Is, I-Am, Who-Has, I-Have and
UnconfirmedCOVNotification services are available only when XMW90
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 page 63.
Database_revision: This is changed during operation according to
section 12.11.35 of ANSI/ASHRAE standard 135-2008.