Example: Configuring a trend view for temperature monitoring (RT Unified) - WinCC Unified

Introduction

To visualize the tag values of the temperature monitoring in runtime, you have added a trend view in the "Overview" screen. You can display the current temperature of the "Filling Tank" plant object with the trend view.

Requirement

• The HMI tag for temperature measurement has been configured, for example "temperature".

• The "Overview" screen is open for editing.

Configuring the trend area and axes

1. Create a trend view in the "Overview" screen by dragging the control from the "Tools" task card to the screen.

2. Go to "Properties" and set the required height, width and position of the trend view.

3. Open the "Trend areas" group under "Properties".

   The index numbers of the trend area are displayed.

4. Expand the index number of the trend area.

   The properties of the trend area are displayed.

5. Define the colors for displaying the trend area and the reference lines.

6. Configure the time axis and value axis settings under "Bottom time axis" and "Left value axis".

Configuring trends

1. Go to "Properties > Properties > General > Trend areas > [0] trend areas > Trends" and click on the selection button in the "Static value" column.

   A dialog opens.

2. Click "Add" in the "Index" column.

   This adds another trend. Close the dialog.

3. Expand the index number of the trend [0]. The trend settings are displayed.

4. Specify the name of the trend under "Display name", for example "Temperature".

5. Under "Data source Y > Source", select the "temperature" tag in the "Static value" column.

6. Configure the line color for the trend, for example, blue.

Result

The trend control is now configured. In runtime, you monitor the temperature changes over time based on the trend.

Configure an additional value display if you want to evaluate the data of the trend control in runtime. You can also configure the value display as a "Ruler".