Name: Logical Alarm Areas
Software Version: 10.0.6
Keywords: Alarms. Area. Alarm management.
Summary
The sample shows how to set up Logical Alarm Areas and how to use them to filter Alarms. It aims to demonstrate how your solutions can be enhanced with additional features in the alarming system to fit your needs. We will run through those features on this page. Going to Alarms/Areas, you'll find the Alarms Areas configuration interface.
. Built with v10. This example illustrates how to create and use hierarchical `AlarmAreas` in your application. |
Summary
This example demonstrates how to configure and visualize hierarchical alarm structures with AlarmAreas. It makes possible to enable, disable, acknowledge, count and filter Alarms based on the Area they are linked to, simplifying the management of complex solutions.
Technical Information
This sample includes the following features:
- Annotation and alarm markers
- Pens group and multiple Y-axis scales
- Zoom, pan, and real-time update options
You can also refer to the TrendChart documentation to explore all available runtime properties and customization options.
Creating and Applying AlarmAreas
To create an AlarmArea, go to Alarms / Areas. It is possible to create SubAreas by selecting an existing AlarmArea and creating a new one inside of it. In order to apply AlarmAreas, go to Alarms / Items configuration, right-click on the column headers, enable the Area column, and assign each AlarmItem to its corresponding Area by editing the column.
Active Alarms Count by Area
Each AlarmArea maintains its own count of active alarms and provides methods to acknowledge or disable all associated alarms. You can link these functions to buttons for alarm management. To explore how it’s configured, double-click the buttons in the example using Draw mode and examine their Dynamics and Text properties.
Filter Alarms by Area
Additionally, Areas can be used to filter AlarmItems, simplifying and organizing the contents of AlarmViewers. To do this, go to Displays / Draw / Modules, select an AlarmAreas component and place it on the desired display. Set the SelectedArea field to a text tag, and then apply it to the AlarmAreas through the display’s CodeBehind, like this:
| Code Block | ||
|---|---|---|
| ||
public async void ApplyFilterButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if(String.IsNullOrEmpty(@Tag.SelectedArea))
@Tag.AlarmFilter = "";
else
@Tag.AlarmFilter = @Alarm.Area[@Tag.SelectedArea].GetFilterAsync();
} |
This code retrieves the Area selected by the user through the AlarmAreas component. The GetFilterAsync method then generates a text filter that includes the selected Area and all of its SubAreas. This filter is assigned to the AlarmFilter text tag, which is applied to the AlarmViewer by double-clicking on it in Draw mode and setting its Filter field to {Tag.AlarmFilter}.
Reference Information
→ Check out Alarm Areas and AlarmAreas Control for more information on the purpose and behavior of AlarmAreas.
In this section:
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Technical Information
In the Alarms Areas configuration interface, users can define logical areas to group Alarms, enhancing organization and alarm management.
In the Alarms/Items configuration interface, there is the AuxValue column, which allows for displaying additional tag info alongside the one triggering the alarm in the alarm message.
Within the Alarm namespace, various attributes facilitate interaction with these defined areas. The users can manage areas through attributes such as categories, descriptions, IDs, and names by typing:
| Code Block | ||
|---|---|---|
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Alarm.Area. |
Also, it includes counts for the total number of Alarms within an area (including or excluding child areas) and the number of unacknowledged Alarms. It also offers functionalities to acknowledge all Alarms within an area, with or without including child areas, and to turn Alarms on or off for specific areas.
The solution example shows how to display these areas in a tree view during runtime using the AlarmAreas graphical component, allowing users to see and select different alarm areas.
This feature enables the monitoring of Alarms in real time, showing active and unacknowledged Alarms within selected areas. Users can acknowledge Alarms directly from this view, and they can turn off Alarms for specific areas, preventing them from appearing in the interface. However, the system continues to process and store them as usual.
Additionally, the interface allows for selecting specific sub-areas to filter the displayed Alarms, demonstrating the flexibility and depth of control available in managing and monitoring Alarms across different areas of an operation.
Reference Information
Check out the Alarm Areas documentation to leverage this feature's potential.