Mitsubishi Electric MELSEC iQ-F Series User Manual page 30

■Polarity
This property is included in the binary input/output object and indicates the input/output polarity.
PresentValue of BACnet
INACTIVE
ACTIVE
INACTIVE
ACTIVE
When the value of OutOfService is TRUE, the PresentValue property does not change even if Polarity changes.
■ChangeOfStateTime, ChangeOfStateCount, TimeOfStateCountReset
The following figure shows the operation of ChangeOfStateTime (the date and time when the status change has occurred),
ChangeOfStateCount (the number of times the status change has occurred), and TimeOfStateCountReset (the date and time
when ChangeOfStateCount is set to 0).
Time
PresentValue
ChangeOfStateTime
ChangeOfStateCount
TimeOfStateCountReset
Even when OutOfService is TRUE, the ChangeOfStateTime, ChangeOfStateCount, and TimeOfStateCountReset properties
change.
When the value of ChangeOfStateCount is other than 0, the TimeOfStateCountReset property does not change.
4 FUNCTIONS
28
4.2 BACnet Object Function
Polarity
NORMAL
NORMAL
REVERSE
REVERSE
T T
1 2
...
T
1
100 101
Current value in the buffer memory
0
1
1
0
T T
3 4
T T
2 3
102 103
...
Writing data from BACnet workstation
or another BACnet controller
T
5
T
4
0
104
T
5
0