MultistateLOOAL type requires two independent latched binary physical outputs, On and Off.
The table shows the value of the DO(s) for a given state of the bundled point.
LOOAL Control Circuit States. | |||
|---|---|---|---|
State | DO-1 | DO-2 | DI-3 |
|
ON | ON | ON | ON |
OFF | OFF | ON | OFF |
AUTO | OFF | OFF | AUTO |
BACnet Property | Short Name | BACnet Description | Notes |
|---|---|---|---|
object-type | ObjTyp | Object type | 14: (multistate-output) |
profile-name | PrfNam | Profile name | Value: 7-366-SBCv15. |
Prototype | BAObjTyp | Building automation profile | Value: 366 (MultistateLOOAL) |
IO-Extension | SubsysExtn | Subsystem | A writable enumerated proprietary property that specifies the type of I/O extension used. |
IOAddress | IOAddress | I/O address | specifies the fieldbus (e.g., IO-0 for Onboard-I/O, IO-1 for TX-I/O) and IO module for this object's ON output. |
IOAddress-2 | AutoAddr | Auto address | specifies the fieldbus (e.g., IO-0 for Onboard-I/O, IO-1 for TX-I/O) and IO module for this object's OFF output. |
present-value | PrVal | Present value | indicates the current logical value of the output. The logical value ranges from 1 to n, where n is equal to the number of states defined. |
priority-array | PrioArr | Priority array | contains prioritized commands that are in effect for this object. BACnetPriorityValue is either an Unsigned value or null. Unsigned values range from 1 to n, where n is equal to the number of states defined. |
Present-Priority | PrPrio | Present priority | indicates the highest priority slot (1-16) in the priority-array with a non-null value. If all slots in the priority array are null, DS1_Present-Priority shall have the value 17. |
relinquish-default | DefCmd | Default command | provides the default value for present-value property when all slots in the priority-array are null. Unsigned values range from 1 to n, where n is equal to the number of states defined. |
Tracking_Value | TckVal | Tracking value | indicates the target state that has been written to the physical output, regardless of whether the output is commanded, decoupled via the out-of-service property or physically overridden by external hardware. Unsigned values range from 1 to n, where n is equal to the number of states defined. |
number-of-states | NumSta | Number of states | defines the number of states the present-value may have. In PXC.A Multistate-LFSSP objects number-of-states is always 3. |
state-text | StaTxt | State text | provides descriptions of all possible states of present-value. The present-value, interpreted as an integer, serves as an index into the array. Multistate-LFSSP object state-text array has three elements {Auto, Off, On}. |
Alarm-Extension | AlarmExtn | Event configuration | A writable enumerated proprietary property that specifies whether the optional intrinsic alarming extension is enabled for the object. |
Aggregation-Extension | AggtnExtn | Aggregation: Operating hours & others | A writable enumerated proprietary property that allows an optional aggregation extension to be enabled for the object. |