Trends

The Trends service is designed to save values from Data Points in a database. It allows to manage historical data coming from Data Points, enable or disable saving data from a specific Data Point, and depict data in a graphical or listed form.

Trends are executed by adding a dedicated extension to Data Points:

• Trend extension to the AnalogDataPoint;

• Trend extension to the BinaryDataPoint;

• Trend extension to the MultistateDataPoint.

The Trends Service is automatically available in the Services container once the Trends library is installed on the device. The Trends library is a default part of the nano EDGE ENGINE V1.8 and is not compatible with earlier versions.

The Trends service has the following slots:

• Status: indicates the current status of the component. If the component works properly, its status is OK; however, it changes accordingly when values in other slots are adjusted.

  • Available information:

    • disabled (either the Data Point or the extension is disabled),

    • OK;

• Enabled: change of the slot's value enables or disables the component.