Appendix 3 Details Of Bacnet Properties - Mitsubishi Electric MELSEC iQ-R User Manual

Appendix 3
This section shows the details of BACnet properties mainly used for BACnet modules.
For data types which are not described in the following table, refer to the BACnet standard with which the BACnet module
complies.
• IEIEJ-P-0003:2000 addendum-a (Institute of Electrical Installation Engineers of Japan)
• IEIEJ-G-0006:2006 addendum-a (Institute of Electrical Installation Engineers of Japan)
• ANSI/ASHRAE135-2004 (ISO16484-5-2003)
• ANSI/ASHRAE135-2010
Properties of an AnalogInput object and AnalogOutput object
Property name
PresentValue
PriorityArray
StatusFlags
Reliability
EventState
EventEnable
HighLinit
LowLimit
LimitEnable
TimeDelay
OutOfService
COVIncrement
Details of BACnet Properties
Description
For an AnalogInput object, the value of an actual indoor temperature or preset temperature is represented.
For an AnalogOutput object, the preset temperature can be changed by changing the property value of an
AnalogOutput object from another BACnet device, such as a central monitoring device.
Settable only for AnalogOutput objects.
The value stored to a PriorityArray property whose index number is the smallest among 16 arrays is a PresentValue
property value.
The current status of an object is represented. (Alarm/failure/under maintenance)
In a configuration function, InAlarm bit, Fault bit, Overridden bit, and OutOfService bit are displayed in order from left to
right.
• InAlarm bit: When an EventState property value is other than Normal, this bit is True.
• Fault bit: When an EventState property value is Fault, this bit is True.
• Overridden bit: Always False.
• OutOfService bit: When an OutOfService property value is True, this bit is also True.
Whether or not the value set to a PresentValue property is reliable is represented.
When a Reliability property value is NoFaultDetected, it indicates that a proper value is stored in the PresentValue
property.
The event status of an object (normal/upper limit value error/lower limit value error/failure) is represented.
Set whether to send an Event notification when an EventState property value is changed.
Specify an upper limit value for a PresentValue property.
If the value of a PresentValue property becomes greater than the set value, upper limit value error will occur.
Specify a lower limit value for a PresentValue property.
If the value of a PresentValue property becomes less than the set value, lower limit value error will occur.
Set whether to monitor an upper limit value and lower limit value.
When this property is set to False, the following statuses are not regarded as an alarm state.
• When a PresentValue property value became greater than a HighLimit property value
• When a PresentValue property value became less than a LowLimit property value
Specify the time interval from when a PresentValue property value is changed to when an EventState property value is
changed. (Unit: seconds)
Even if a PresentValue property value exceeded the normal range once, when the value is returned within a normal
range within the time specified to a TimeDelay, an object will not be in alarm state.
When this property is set to True, it means that the device is under maintenance. (The property assigned to an object
or buffer memory is deallocated.)
A COV notification is sent when the PresentValue property value of a recently sent COV notification exceeded the
value specified to a COVIncrement property.

Appendix 3 Details of BACnet Properties

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