Viewing a trend - Metasys - LIT-12013762 - M4-CGE09090-0H - M4-CGM09090-0H - M4-DLK0350-0 - M4-SNC16121-04H - M4-SNC16121-0H - M4-SNC16122-04H - M4-SNC16122-0H - M4-SNC25151-04H - M4-SNC25151-0H - M4-SNC25152-04H - M4-SNC25152-0H - Field Device - Local Controller Display - 13.0

Local Controller Display User Guide
Product
Controls > Field Controls > Local Controller Display
Document type
User Guide
Document number
LIT-12013762
Document revision
Version
13.0
Revision date
2023-10-02

Procedure

Figure 1. Trend details graphical view
Callout Description
1 Name or description of the point with a trend.
2 The trend displaying values over time.
3 Current value.
4 Current timestamp and value on the trend.
5 Select to view data from the last 24 hours in a tabular format.
6 Selectable time ranges for the trend.
  1. From the Main Menu, select Trends.
  2. To view a trend, highlight the trend, and press OK.
  3. To change the time range and view trends for last 24Hr, 12Hr, 6Hr, or 1Hr time period, press the Left or Right arrows to scroll through the time ranges.
    Note: For each time range the display supports a maximum of 72 samples. If a trend has more than 72 samples then the chart displays 72 samples. For more information and examples, see the example below.
  4. To check the value at a particular timestamp, press the Up arrow to highlight the trend graph, press OK, and press the Left or Right arrows to scroll through the graph.
  5. To view trend data from the last 24 hours in a tabular format, select List.
    Figure 2. Trend details table view

    The trend table shows data from the last 24 hours, with a maximum of 72 samples. The data shown in the trend table is unfiltered.

Example

Filtering samples on the trend graph
The display can display a maximum of 72 samples on the trend graph. For the display to show all 72 samples without aggregation, the maximum time that you can configure between sample creation is shown below:
  • 1 Hr: 50 seconds
  • 6 Hr: 5 minutes
  • 12 Hr: 10 minutes
  • 24 Hr: 20 minutes

Depending on how often you configure the trend to collect a sample, the display may filter out in-between samples if the 72 maximum sample threshold is reached.

If you configure the trend to collect a sample every 5 minutes over a 6 hour time range, the display shows the maximum of 72 samples and does not aggregate any samples.

If you configure the trend to collect a sample every minute over a 6 hour time range, the display shows a sample point on the graph for each set of five samples.

If you configure the trend to collect a sample every minute over a 12 hour time range, the display shows a sample point on the graph for each set of ten samples.