Data Recording with Trend

When you want to monitor the development of data over a long period of time for the purpose of reading a trend, you can save the data with TrendRecording. You can configure IEC variables or parameters to save their values in a persistent database. This database is located on the controller and is populated continually at runtime.

Note

To display the collected data, you design a visualization with a Trend element. This kind of visualization accesses the database for visualizing the data.

Trend recording comprises the following objects:

• 1. : TrendRecordingTask (type Task)
• 2. : TrendRecordingManager object
• 3. : TrendRecording object

See also

• Object ‘Trend Recording Manager’
• Object ‘Trend Recording’
• Object ‘Trend Recording Task’

• Getting Started with Trend Recording
• Configuring Trend Recording