WindO/I-NV4 User’s Manual 3-145
7 BACnet Communication
3
Communication
Status_Flags
This property represents the current status of the object (in alarm, fault, out of service, etc.).
The allocation of flags in the device address is as follows.
COV_Increment
This property represents the minimum amount of change in Present_Value.
COV notifications are sent when the value of Present_Value for the COV notification that was last sent changes to a
value that is greater than or equal to the value set with COV_Increment. COV_Increment cannot be read out to device
address. Set the initial value with WindO/I-NV4.
Priority_Array
Priority_Array is a read-only property representing the array that stores the priority values.
Of the 16 elements in the array (element 1 to element 16), the value stored in Priority_Array with the smallest index
number out of all non-NULL(00h) values is used as the value of Present_Value. If all values stored in Priority_Array
are NULL(00h), Relinquish_Default is used as Present_Value.
Relinquish_Default
Relinquish_Default is the default value used as Present_Value when all values stored in Priority_Array are NULL(00h).
Polarity
This property represents the relationship between the physical state of the input/output and the logical state
indicated by Present_Value in the Binary Input and Binary Output objects.
*1 Always FALSE on the MICRO/I.
Status_Flags Value Logical Value Condition
IN_ALARM
*1
0 FALSE When obtaining a value where Event State is Normal.
1 TRUE Other than above
FAULT
0 FALSE Other than below
1 TRUE When Reliability is present and the no-fault-detected value is not obtained
OVERRIDDEN
*1
0 FALSE Other than below
1 TRUE Present_Value and Reliability did not follow the change in physical input
OUT_OF_SERVICE
0 FALSE When Out_Of_Service is TRUE
1 TRUE When Out_Of_Service is FALSE
Bit Flag Value
Bits 15 to 8 Reserved Undefined
Bit 7 IN_ALARM 0 (fixed)
Bit 6 FAULT 0 or 1
Bit 5 OVERRIDDEN 0 (fixed)
Bit 4 OUT_OF_SERVICE 0 or 1
Bits 3 to 0 Reserved Undefined
Polarity
Physical State of Input/
Output
Present_Value Physical State of Device
NORMAL OFF or INACTIVE INACTIVE Not running
NORMAL ON or ACTIVE ACTIVE Running
REVERSE ON or ACTIVE INACTIVE Not running
REVERSE OFF or INACTIVE ACTIVE Running
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