| Property | Data Type (Application Datatype) | Writable (Conformance Code) | Value or Initial Value | Persistence |
|---|---|---|---|---|
| Object_Identifier | BACnetObjectIdentifier | Y (R) |
02 00 00 00 (hex) Object Type = 8, Instance = xxxxxxx |
Nonvolatile |
| Object_Name | CharacterString[40] | Y (R) | "HMD65_Yxxxxxxx" | Nonvolatile |
| Object_Type | BACnetObjectType (ENUMERATED) | N (R) | 8 (Device Object) | Fixed |
| System_Status | BACnetDeviceStatus (ENUMERATED) | N (R) | 0 (Operational) | Volatile |
| Vendor_Name | Character String | N (R) | "Vaisala" | Fixed |
| Vendor_Identifier | Unsigned16 | N (R) | 339 | Fixed |
| Model_Name | CharacterString | N (R) | "HMD65” | Nonvolatile |
| Firmware_Revision | CharacterString | N (R) | X (BACnet interface) | Fixed |
| Application_Software_Version | CharacterString | N (R) | X.X.X | Fixed |
| Location | Character String[40] | Y (O) | “Location” | Nonvolatile |
| Description | Character String[24] | Y (O) | “Description” | Nonvolatile |
| Protocol_Version | Unsigned | N (R) | 1 | Fixed |
| Protocol_Revision | Unsigned | N (R) | 15 | Fixed |
| Protocol_Services | BACnetProtocolServices Supported (BIT STRING) | N (R) |
Read Property Read Property Multiple Write Property Device Communication Control Reinitialize Device Who-Is Who-Has |
Fixed |
| Protocol_Object_Types_Supported | BACnetObjectTypesSupported (BIT STRING) | N (R) |
Analog Input Analog Value Device |
Fixed |
| Object_List | BACnetARRAY[N]of BACnetObjectIdentifier | N (R) |
Device Object AI1 (Relative Humidity) AI2 (Temperature) AI3 (Dewpoint / Td) AI4 (Dewpoint / Tdf) AI5 (Wet bulb temperature / Tw) AI6 (Absolute humidity / A) AI7 (Mixing ratio / X) AI8 (Enthalpy / H) AV1 (Pressure) |
Fixed |
| Max_APDU_Length_Accepted | Unsigned16 | N (R) | 480 | Fixed |
| Max_Master | Unsigned16 (0 … 127) | Y (R/O) | 127 | Nonvolatile |
| Max_Info_Frames | Unsigned | N (R/O) | 1 | Fixed |
| Segmentation_Supported | BACnetSegmentation (ENUMERATED) | N (R) | 3 (No segmentation) | Fixed |
| APDU_Timeout | Unsigned | N (R) | 3000 (ms) | Fixed |
| APDU_Retries | Unsigned | N (R) | 3 | Fixed |
| Device_Address_Binding | 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, it has a value range of 0 ... 4194303. Each device is assigned a random value in this range at Vaisala factory.
Object_Name
- Device model is HMD65, with serial number G1234567
- Object_Name is "HMD65_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
Reinitialize Device and Device Communication Control services must be password protected. According to BACnet protocol, password is a character string of max. 20 characters. The default password is "1234". The password can be changed using Vaisala Insight PC software: for instructions, see Configuring BACnet with Insight.