Properties Of An Accumulator Object - Mitsubishi Electric MELSEC iQ-R User Manual

Properties of an Accumulator object

Property name
PresentValue
Pulse_Rate
Limit_Monitoring_Interval
StatusFlags
Reliability
EventState
HighLimit
LowLimit
LimitEnable
OutOfService
APPX
268
Appendix 3 Details of BACnet Properties
Description
The total amount of electrical energy is stored.
The amount of pulses which is received within the time period specified to a Limit_Monitoring_Interval property is
represented.
When the time period specified to a Limit_Monitoring_Interval property is elapsed, the value is reset to '0' and is
calculated again.
Specify a time period that a Pulse_Rate property can receive the number of pulses. (Unit: seconds)
When the time period specified to a Limit_Monitoring_Interval property is elapsed, the value of a Pulse_Rate property
is reset to '0'.
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.
Specify an upper limit value for a Pulse_Rate property.
When a Pulse_Rate property value becomes greater than the specified value, an EventState property value is
changed to HighLimit.
Specify a lower limit value for a Pulse_Rate property.
When a Pulse_Rate property value becomes less than the specified value, an EventState property value is changed to
LowLimit.
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 Pulse_Rate property value became greater than a HighLimit property value
• When a Pulse_Rate property value became less than a LowLimit property value
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.)