BACnet Property | Short Name | BACnet Description | Notes |
|---|---|---|---|
Present_Value | Prval | Present value | A standard BACnet enumerated property, Fieldbus-State-Type, that indicates the current state of the network determined by the fieldbus subsystem. The present-value property is only writable when the object is out-of-service. |
Status_Flags | StaFlg | State flag | Represents four Boolean flags that indicate the general "health" of the object. The four flags are: In FieldBusManagement objects, the OVERRIDDEN and OUT_OF_SERVICE flags will always be false. |
Reliability | Rlb | Reliability | Provides an indication of whether the Present_Value property or the operation of the physical input in question is "reliable" as far as the BACnet Device or operator can determine and, if not, why. The reliability property is writable only when the object is out-of-service |
Out_Of_Service | OoServ | Out of service | A writable standard BACnet property used to temporarily decouple the present-value and reliability properties from the internal process that normally updates them. In FieldBusManagement objects, out-of-service is always false. |
number-of-states | NumSta | Number of states | A read-only standard BACnet property that indicates the number of states in the Fieldbus-State-Type enumeration (the value range for present-value). |
state-text | StaTxt | State text | A read-only standard BACnet property, BACnetARRAY with a CharacterString that indicates the strings representing the values in the Fieldbus-State-Type enumeration. |
event-state | EvtSta | Event state | A read-only standard BACnet enumerated property, BACnetEventState, that represents the event/alarm state of the object. |
Tracking_Value | TckVal | Tracking value | A proprietary read-only enumerated property, Fieldbus-State-Type, that indicates the current state of the network as determined by the P1 subsystem. Tracking_Value is not decoupled from the fieldbus subsystem when out-of-service is true. The range of values for Tracking_Value: |
Field_Bus_Command | FldbCmd | Field bus command | A proprietary writable enumerated property, Fieldbus-Command, that allows the current state of the fieldbus subsystem to be changed. The range of values for Fieldbus-Command: |
Field_Bus_Info | FldbInfo | Field bus info | A proprietary read-only property, CharacterString, that provides descriptive information related to the fieldbus subsystem. Relevant information may include protocol version and subsystem firmware revision. |
Device_Command | DevCmd | Device command | A proprietary writable property, CharacterString, used to send commands to a fieldbus device. If the object is out-of-service, commands issued using Device_Command are not passed to the fieldbus subsystem. Commands passed prior to the object going out-of-service will run to completion. |
Device_Command_Result | DevCmdRlt | Device command result | A proprietary read-only property, CharacterString, used by the fieldbus subsystem to indicate the result of the last Device_Command. |
Network-Port-Ident | NwkPortId | Network port identification | A read-only proprietary property, CharacterString, that indicates the binding between the logical P1 port and the selected physical RS-485 port. In FieldbusManagement objects representing P1 subsystems, Network-Port-Ident is restricted to three values: |
IOAddress | IOAddress | I/O Address | A read-only proprietary property, of type CharacterString, that provides fieldbus addressing information. In FieldbusManagement objects representing P1 subsystems, IOAddress is restricted to three values: |
Fieldbus-Restart-Value |
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| A proprietary read-only enumerated property, Fieldbus-State-Type, that indicates the value of present-value at startup. In FieldbusManagement objects representing P1 subsystems, Fieldbus-Restart-Value is always set to Run. |
Update_Count | UpdCnt | Update count | A proprietary read-only property that indicates the number of times that present-value has been updated since the last restart. |
IO-Extension | SubsysExtn | Subsystem | A proprietary read-only enumerated property that indicates the IO extension for this object. In FieldbusManagement objects, the supported IO-Extension values: |
Alarm-Extension | AlarmExtn | Event configuration | A writable proprietary enumerated property that specifies whether the optional intrinsic alarming extension is enabled for the object. The range of values for Alarm-Extension: |
Display-Value | DspyVal | Display value | A read-only proprietary property, CharacterString, that provides a preformatted version of present-value for use in reports. |
Config_Data_Master |
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| A writable proprietary enumerated property that is ignored in FieldBusManagement objects for P1 networks. |
Orphan_List | OrphanLst | Orphan list | A read-only proprietary property, BACnetLIST of CharacterString, that is unused in FieldBusManagement objects for P1 networks. |