Layout Cards

A layout consists of cards that comprise the Web HMI Runtime system. Cards display data according to the context of their associated asset.

You can use the following Web HMI cards as well as build your own cards to view data from other sources, such as an external database, and then include them in custom layouts.

CardDescription
Trend Card

Shows the trend-line analysis of an asset's property data in the HMI/SCADA system for a given time frame. If both real-time and historical data sources are available for a particular property, the card uses historical data source. If there are no historical data sources, then the card uses real-time data to show trend points of the latest incoming values.
Mimic Card

Displays a process diagram for monitoring and controlling production equipment and processes. When defined, an operator (with permission in the HMI/SCADA system) can open a Control View on a Mimic Card to change an underlying HMI/SCADA value. The Control View can also display historical properties that show the last known current value returned from the Historian server.

If a property has both real-time and historical data sources defined, the Mimic Card always displays data from the real-time data source, even when that tag is not available. To display values from a historical data source, you must configure those property values to use only a historical data source. To display both real-time and historical data for the same underlying tag, you must define separate properties in the model for the real-time tag and for the historical tag.

Alarm Card

Displays the alarms occurring in the HMI/SCADA system.
Web HMI provides these Alarm Card views:
  • General view shows all active alarms in the underlying HMI/SCADA system by severity level.
  • Detail view displays all alarms for the selected model context. It displays the severity level of an alarm, date and time the alarm started, asset and its property causing the alarm, source where the alarm originated, subcondition of a property tag, and alarm description. An operator (with permission in the HMI/SCADA system) can acknowledge alarms and apply filters to alarms.
Task List Card

Displays a Workflow Task List that enables an operator to view the progress of tasks and act on the steps in the task.

The Task List enforces authorization of specific Task List actions through Windows security and role definitions. For example, a user may have the ability to start a task but not skip a task, or delegate a task to someone else.