1 FUNCTIONS
1.1 BACnet Object Function
47
1
Buffer memory format of BinaryOutput objects
The following shows the format of properties assigned to the buffer memory.
Additionally, the availability of reading from/writing to a CPU module is shown in the following table.
R: Read-only, W: Write-only, R/W: Read/Write
Offset Name Remarks R/W
+0 CONTROL b15 OutOfService 0: False, 1: True
• When '1' is set to "OutOfServiceControl" in [Settings] [Basic
Information] [BACnet Detail Setting] button "Interface",
the value of an OutOfService property is stored.
R/W
b14 Not used
b13 PVWrittenClear • A PVWrittenClear and a PVOut operate when one value is
changed from '0' to '1' while the other value is '0'.
• When the value is '1', the PVWritten of the STATUS is
changed to '0'.
b12 PVOut • A PVWrittenClear and a PVOut operate when one value is
changed from '0' to '1' while the other value is '0'.
• When a value is changed from '0' to '1', a PresentValue
property value is written to the PriorityArray whose index
number is 'PVPriority + 1'.
b11 to b8 PVPriority A Priority for writing to PresentValue property
*1
(The value to which '1' is added is used for Priority.)
b7 to b4 Not used
b3 to b0 Reliability 0: NoFaultDetected
1: NoSensor
2: OverRange
3: UnderRange
4: OpenLoop
5: ShortedLoop
6: NoOutput
7: UnreliableOther
8: ProcessError
9: MultiStateFault
10: ConfigurationError
+1 STATUS b15 to b14 Not used R
b13 to b11 EventState 0: Normal
1: Fault
2: Offnormal
3: HighLimit
4: LowLimit
5: LifeSafetyAlarm
b10 AckedTransition ToOffnormal 0: False, 1: True
b9 ToFault 0: False, 1: True
b8 ToNormal 0: False, 1: True
b7 PVWritten • When the PresentValue property value is written, the value
becomes '1'.
• When changing the value to '0', always use the
PVWrittenClear of a CONTROL.
b6 EventEnable ToOffnormal 0: False, 1: True
b5 ToFault 0: False, 1: True
b4 ToNormal 0: False, 1: True
b3 StatusFlags InAlarm 0: False, 1: True
b2 Fault 0: False, 1: True
b1 Overridden Always 0
b0 OutOfService 0: False, 1: True
+2 PresentValue b15 to b1 Not used R
b0 PresentValue 0: Inactive, 1: Active
+3 FeedbackValue b15 to b1 Not used R/W
b0 FeedbackValue 0: Inactive, 1: Active
• The status of a BACnet device is stored.
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