WEG bacnet CFW701 User Manual - page 24
BACnet Object Modeling
CFW701 | 24
5 BACNET OBJECT MODELING
A BACnet object represents physical or virtual equipment information, as a digital input or parameters. The
CFW701 presents the following object types:
ANALOG INPUT;
ANALOG OUTPUT;
ANALOG VALUE;
BINARY INPUT;
BINARY OUTPUT;
BINARY VALUE;
DEVICE OBJECT.
Each object type defines a data structure composed by properties that allow the access to the object
information. The Table 5-1Table 5-1 shows the implemented properties for each CFW701 object type.
Table 5-1: Properties of the BACnet objects
Property
DEVICE
ANALOG
INPUT
ANALOG
OUTPUT
ANALOG
VALUE
BINARY
INPUT
BINARY
OUTPUT
BINARY
VALUE
Object Identifier
X
X
X
X
X
X
X
Object Name
X
X
X
X
X
X
X
Object Type
X
X
X
X
X
X
X
System Status
X
Vendor Name
X
Vendor Identifier
X
Model Name
X
Firmware Revision
X
Application Software Version
X
Description
X
Protocol Version
X
Protocol Revision
X
Protocol service supported
X
Protocol object types Supported
X
Object List
X
Max APDU Len Accepted
X
Segmentation Supported
X
APDU timeout
X
Number of APDU retries
X
Max Master
X
Max info frames
X
Device Address Binding
X
Database revision
X
Present Value
X
X
X
X
X
X
Description
X
X
X
X
X
X
Status Flags
X
X
X
X
X
X
Event State
X
X
X
X
X
X
Reliability
X
X
X
X
X
X
Out of Service
X
X
X
X
X
X
Units
X
X
X
X
X
X
Priority Array
X
X
X
X
Relinquish Default
X
X
X
X
Polarity
X
X
* The Priority Array and Relinquish Default properties are available for objects with type C (commandable)
access.
Each object presents an identifier unique in the network, called Object Identifier. The Object Identifier property is
composed by two parts: