Detailed Explanation Of Object - LG BNU-BAC Owner's Manual

Detailed Explanation of Object

1) Common to All Objects
Objects related to the air conditioner in communication are treated on the BACnet as described
below.
- Air Conditioner in Normal Communication
Other BACnet devices can access each object related to the air conditioner.
- Air Conditioner Unconnected
It seems to other BACnet devices that no objects related to the air conditioner exist.
Therefore, when the ReadProperty/WriteProperty service is received, the following ErrorPDU will
be returned.
Error class: OBJECT; Error type: UNKNOWN_PROPERTY
- Air Conditioner Communication Error
Other BACnet device can access the objects related to the air conditioners, but the
Present_Value Property will be read in a value immediately before the communication error.
2) ON/OFF (Setting)
Point number: 1
Object name: StartStopCommand_XXX (XXX: A/C unit address)
Object type: Binary Output
Meaning: This object is used to give ON/OFF commands to the air conditioner.
Present_Value property:
ACTIVE: ON command
INACTIVE: OFF command
Remarks: 1. The command executed is transmitted to the A/C regardless of the status of the A/C.
2. Present_Value property will not be used if a property has never been set in the past.
3) ON/OFF (Status)
Point number: 2
Object name: StartStopStatus_XXX (XXX: A/C unit address)
Object type: Binary Input
Meaning: This object is used to monitor the ON/OFF status of the air conditioner.
Present_Value property:
ACTIVE: ON
INACTIVE: OFF
Remarks: If there is an operation error, the Present_Value property will be set to ACTIVE
regardless of whether the A/C is in operation or not.
Detailed Explanation of Object
Installation/Owner Manual 51