Process Analyst pens use the same sample quality values as CitectSCADA trend and alarm samples. There are four sample quality values:
The Process Analyst uses the following default line styles to indicate data quality:
Quality | Line style |
---|---|
Good |
Solid |
NA |
None |
Gated |
Dot |
Consider the following examples:
Data sample | Description |
---|---|
|
This example shows several single samples. The third sample has a quality of N/A, indicated by the break in the trend line. |
|
Here the quality of the third sample is gated, indicated by the broken line connecting these samples. |
With multiple samples, the quality of the last sample in the group determines how the line is drawn. Consider the following examples: |
|
|
This example shows that the third sample is a multiple sample. The quality of the third (multiple) sample and the next sample are N/A, indicated by the break in the trend line. |
|
Here the quality of the third multiple sample is gated, indicated by the broken line connecting the samples. |
The line style indicating the data quality is configurable during run time and design time; for details, see Configuring pen quality.