Cov(Change Of Value) Notification - LG BNU-BAC Installation & Owner's Manual

Report Function

COV(Change of Value) Notification

A request for COV registration is accepted through the SubscribeCOV service.
1) Setting of Confirmed or Unconfirmed COV
This item is supported according to the BACnet Specifications.
2) Setting of the desired lifetime of the subscription
This item is supported according to the BACnet Specifications.
When COV notification is made at the time of status change, the difference between the registered
time and present time will be calculated. If the difference is greater than the registered lifetime of
the subscription, the subscription will be judged expired and deleted. Therefore, if a clock time
change is made, the lifetime of the subscription may differ from the value that has been set.
3) Memory after Interruption of Power Supply to System
This item is not supported. Registration information is not stored in the memory, and will be lost
when the power is turned off. According to the BACnet Specifications, It is not required to
guarantee preservation of subscriptions across power failure.
Supported COV service is shown in the follow table
Service
On/Off (status)
Lock On/Off (status)
Operation mode (status)
Swing (status)
Filter Sign
Fan Speed (status)
Set Room Temperature
Room Temperature
Alarm
Error Code
User mode
58 BACnet Gateway
Object
Binary Input object property
Binary Input object property
Multistate input object property
Binary Input object property
Binary Input object property
Analog input object property
Analog value object property
Analog input object property
Binary Input object property
Multistate input object property
Multistate input object property
Product
Indoor, vent
Indoor, vent
Indoor, vent
Indoor
Vent
Indoor, vent
Indoor
Indoor
Indoor, vent
Indoor, vent
vent