Mircom Flex-Net Phase II Application Manual page 17

The object types that Flex-Net uses are binary input, analog input, multi-state input, life safety
point and binary output. The following table identifies which fire devices are classified under
which BACnet object types.
Object Type
Binary Input
Analog Input and
Multi-State Input
Life Safety Point
Binary Output
Each of these object types have an associated set of properties. These properties identify the
object and the state it is in. The table below lists the properties associated with each BACnet
object that are used by the Flex-Net system. Some of the properties below are static, while
others are dynamic and are used to determine the state the object is in. The dynamic
properties in the table are bolded.
Object Binary Input
Type
Object Object
Properties Identifier
Object Name
Object Type
Present Value
Status Flags
Event State
Out of Service
Polarity
Description
Each dynamic object property uses different types of information to describe the state of the
property. The type of information reported can also vary between different object types for the
same object property. The following discussion describes the different values each dynamic
object property can have for the different object types.
BINARY INPUTS: The Present Value property can be in one of two states: active or inactive.
For the Status Flags property a Boolean array [_,_,_,_] is displayed with each value in the
array representing the presence (1) or absence (0) of an Alarm, Fault, Override or Out of
Service respectively. For example a signal of 1,1,0,0 indicates the presence of an alarm and a
fault. Note that for Flex-Net override is never used. For the Event State property one of three
states is possible: normal, fault or off normal.
ANALOG INPUTS: The Present Value property is represented by a raw analog value in the
form of a pulse width PW4 signal. For the Status Flags property a Boolean array [_,_,_,_] is
displayed with each value in the array representing the presence (1) or absence (0) of an
Fire Device Types
Conventional Input, System Status, Page Select Switches, Manual
Control Switches, Miscellaneous Input Circuits
Ion Detector, Photo Detector, Heat Detector, Laser Detector,
COPTIR, 4-20mA Module, Acclimate Detector
Fire Phone, Telephone Line, Generic Input
Amplifier, Addressable Relay, Conventional Relay, Conventional
Signal, Control
Analog Input Multi-State
Input
Object Object
Identifier Identifier
Object Name Object Name
Object Type Object Type
Present Value Present Value
Status Flags Status Flags
Event State Event State
Out of Service Out of Service
Units Number of
Description States
Description
State Text
Life Safety Point Binary Output
Object Identifier Object Identifier
Object Name Object Name
Object Type Object Type
Present Value Present Value
Status Flags Status Flags
Event State Event State
Out of Service Out of Service
Reliability
Mode Priority Array
Accepted Modes Relinquish
Silenced
Operation Description
Expected Active Text
Description Inactive Text
BACnet
Polarity
Default
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