About AnalogDevice object runtime attributes
- Last UpdatedJul 19, 2024
- 3 minute read
The following topics describe the runtime only attributes for the object.
Note: Configurable runtime attributes are described in the configuration sections. For more information, see About analog device object configuration.
For a list of common attributes, click Attributes Help in the Help file header.
|
Attribute |
Description |
Runtime Access (Supervisory, User, Read-Only, None) |
|---|---|---|
|
CtrlTrack.DataType |
The expected data type of the CtrlTrack attribute value. This is always Boolean. |
Read-Only |
|
CtrlTrack.ReadStatus |
The cause of any errors that have occurred when data is read from the target feedback reference (object and attribute). This is the Message Exchange status and not the status of the communication to external systems or devices such as Programmable Logic Controllers (PLCs). |
Read-Only |
|
CtrlTrack.Value |
The value that is read from the CtrlTrack.InputSource attribute. |
Read-Only |
|
CtrlTrack.ValueHist |
The current value of the control tracking flag. |
Read-Only |
|
Hi.Condition |
Set to TRUE if the PV has exceeded the Hi level limit. |
Read-Only |
|
HiHi.Condition |
Set to TRUE if the PV has exceeded the HiHi level limit. |
Read-Only |
|
Lo.Condition |
Set to TRUE if the PV has exceeded the Lo level limit. |
Read-Only |
|
LoLo.Condition |
Set to TRUE if the PV has exceeded the LoLo level limit. |
Read-Only |
|
PV.Bad.Condition |
If TRUE, then the calculated PV has a quality of BAD. |
Read-Only |
|
PV.Dev.Deviation |
The current deviation, in engineering units, between the PV and the SP. |
Read-Only |
|
PV.Dev.Major.Condition |
Set to TRUE when the difference between the PV and SP has exceeded the major tolerance and the timer has expired. |
Read-Only |
|
PV.Dev.Minor.Condition |
Set to TRUE when the difference between the PV and the target has exceeded the minor tolerance and the timer has expired. |
Read-Only |
|
PV.Dev.TimeSinceTargetChange |
The amount of time that has elapsed since the SP was changed. The format is: days hh:mm:ss.fffffff. The value is calculated based on the SPChangeTime attribute. |
Read-Only |
|
PV.Dev.SPChangeTime |
The time of the most recent change to the SP value since object deployment. This time is used to calculate the TimeSinceTargetChange attribute. |
Read-Only |
|
PV.Input.DataType |
The data type of the PV value. This is always Float. |
Read-Only |
|
PV.Input.ReadStatus |
Thecause of any errors that have occurred when data is read from the target feedback reference (object and attribute). This is the Message Exchange status and not the status of the communication to external systems or devices such as Programmable Logic Controllers (PLCs). |
Read-Only |
|
PV.Input.Value |
The value that is read from the PV.Input.InputSource attribute. |
Read-Only |
|
PV.Output.DataType |
The data type of the PV value. This is always Float. |
Read-Only |
|
PV.Output.WriteStatus |
The cause of any errors when writing data to the target location (object and attribute), or, in the case where that location is in a DeviceIntegration Object, the actual field I/O status. This status is the Message Exchange status and, when OutputDest is a DeviceIntegration Object, the status of the communication to external systems or devices such as Programmable Logic Controllers (PLCs). |
Supervisory |
|
PV.Output.Value |
A placeholder for values that will be written to the target location. |
Read-Only |
|
PV.ROC.DecreasingHi.Condition |
Set to TRUE if the PV has exceeded the Lo rate of change limit. |
Read-Only |
|
PV.ROC.IncreasingHi.Condition |
Set to TRUE if the PV has exceeded the Hi rate of change limit. |
Read-Only |
|
PV.ROC.Rate |
The calculated rate of change of the PV. |
Read-Only |
|
PVAuto |
This attribute is calculated independently of the state of the PVMode attribute. The PVAuto attribute is calculated as if the state of "PV" were always "Auto." The PVAuto attribute is calculated from the PV.Input.Value attribute using any configured scaling parameters. For extra quality handling, see Attributes with extra quality handling. |
Read-Only |
|
SP.DataType |
The data type of the SP value when the analog type is AnalogRegulator. This value is always Float. |
Read-Only |
|
SP.ReadStatus |
The cause of any errors that have occurred when data is read from the target feedback reference (object and attribute). This is the Message Exchange status and not the status of the communication to external systems or devices such as Programmable Logic Controllers (PLCs). |
Read-Only |
|
SP.ReadValue |
The value that is read from the SP.InputSource attribute when the analog type is AnalogRegulator. For extra quality handling, see Attributes with extra quality handling. |
Read-Only |
|
SP.WriteStatus |
Reports whether thelast SP value written reached the intended target specified by the output destination. This only applies when the analog type is AnalogRegulator. |
Supervisory |
|
SP.WriteValue |
The value received internally from this object or from an external Message Exchange client. |
Supervisory, User |