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Important Product Information
Getting Started with Operations Hub
User Guide
- Overview
- Applications
- Entities
- Queries
- Plug-ins
- Events
- Email Templates
- Parameters
- Users
- Roles
- Administration
- Data Sources
- Pages
- Navigation
- Explorer
- Themes
- Settings
- Widgets
  - About Widgets
  - Native (Classic)
  - Integration/System
    - Integration/System Overview
    - Inputs
    - Charts
      - Charts Overview
      - Line Chart
        In a line chart, data points are connected by a line to help visualize the changes in data trends over a period a time.
      - Pie Chart
      - Bullet Graph
        Use bullet graphs to compare the performance of any two values.
      - Histogram
        This plug-in provides a graphical representation of the distribution of numerical data.
      - Pareto Chart
        Plot a pareto chart for qualitative analysis of your data.
      - Sparkline
        Generate simple sparkline charts to visualize data trends.
      - Spider Chart
        Use spider charts to compare and analyze multiple data sets.
      - Timeline
        Use the timeline widget to visually monitor the progress of your events.
      - Trend Card
        A Trend Card widget allows you to plot real-time data from OPC UA servers and historical data from Historian servers.
        Trend Design-Time Configuration
        The initial Trend Card customization settings available during the design phase of your App.
        Trend Run-Time Configuration
        Once the chart is live, the runtime customization settings allows for more flexibility and user control when viewing real-time or historical data.
        Customize Y-Axis Display Settings
        The trend chart includes a set of properties that enable customization of the Y-axis (vertical axis) display, affecting how data is visually interpreted.
        Mark a View as a Favorite
        A favorite allows you to save a configured view for quick access later.
        Perform Data Analysis
        Visualize real-time and historical data trends to monitor performance, identify patterns, and make informed decisions.
        Control Data Updates
        These functions allow users to control how data is displayed and refreshed.
        Use Legend to Interpret Data
        The legend helps you track and manage displayed data.
        Move Around the Trend Chart
        Pan across the chart, scroll through data, zoom in for details, or expand the view to focus on specific trends.
        Download or Share the Chart
        Download your chart as a file to save or share with others.
      - Variwide Chart
        A variwide chart is a column chart where each column has a separate width to represent the third dimension.
    - HMI
    - Display
    - Maps
    - General
    - Batch
  - HMI Graphics
  - Widget Tutorials
    This topic provides video introductions to some of the most widely used integration widgets in Operations Hub. View these videos to get started with these commonly used widgets.
- Scripts
- General Reference
- APIs
- Troubleshooting
- Glossary of Terms

Control Data Updates

These functions allow users to control how data is displayed and refreshed.

View Real-time Updates: Displays real-time values and units as they update.
Pause the Data Flow: Helps you analyze a specific moment without new data appearing on the chart.
Reset the Trend Chart: Revert all changes made to the trend chart (duration, start time, axis preferences, etc.).

View Real-time Updates

When the Trend Card widget is in Live mode, the legend continuously updates to show the current value and the Engineering Units (EGU).

Example: Consider a trend chart monitoring the temperature of a machine:

When you are in Live mode, the legend displays the current temperature value (75°C) and its engineering units (°C).
As the machine's temperature changes and new data is received (the temperature rises to 76°C), the legend will automatically update to show 76°C.

Pause the Data Flow

In Live mode, you can pause real-time updates on the trend chart. This option is useful when you want to analyze a specific period without new data appearing on the chart.

On the toolbar, select to stop data updates.
Select to resume data updates.

Reset the Trend Chart

On the toolbar, select , then select to reset the chart.

This will return the chart to its state before any modifications were made after plotting the data.