Technical Reference Manual - InduSoft

Alarms, Events, and Trends
The dialog in detail
Points dialog
The following table summarizes the properties of each data point:
Column Name
Point
Label
Color
Data Source
Tag/Field
Min Scale / Max Scale
Description
A unique ID number for the point, which is assigned automatically when the point is created in this interface.
The label associated with the Point can be displayed on the Legend, during runtime, providing a short reference to the user for each
Point.
The color of the pen usedColor of the pen used to draw the values of the Point on the Trend Control object.
The data source for this point. Tag is available by default, but all other sources must be configured in the Data Sources dialog.
The meaning of this parameter depends on the Data Source type associated with the data point:
• Tag: Type the name of the tag with values to display. If the tag is configured in the Trend task, the history data is automatically
retrieved; otherwise, only the online values are displayed.
• Batch: Type the name of the tag with values to be retrieved from the Batch History file generated by the Trend Task, and displayed
on the object.
• Database: Type the name of the field (column) in the SQL Relational Database that holds the data Point values.
• Text File: Type the number of the column that holds the Point values. The number 0 refers to the first column, 1 refers to the
second column, and so on.
The scale of the Y-axis for this point. This overrides the default scale that is set in the Axes dialog.
Note: The Min Scale and Max Scale properties can hold real numeric values up to six decimal places. If you need more
precision than that, then you must configure the Min Scale and Max Scale properties with Real tags and then store the
values in those tags.
Style The line and marker styles for this point; click the button to open the Pen Style dialog.
Options Additional options for this point; click the button to open the Options dialog.
SPC Calculated statistics to be used in statistical process control (SPC); click the button to open the SPC dialog.
Hide
Tag trigger — when the value is TRUE, the data point is hidden in the trend display.
Pen Style dialog
This dialog allows you to configure the style of the pen used to draw the data Point values on the object
during runtime.
Accessing the dialog
To access the Pen Style dialog for a specific data point, first access the Points dialog and then click the Style
column for that data point.
Also, it can be launched during runtime, allowing the user to customize these settings on-the-fly.
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