Data Sampling

Presentation

The data sampling function on Panel Server samples data from connected devices at a defined frequency for a defined set of measurements. The frequency and measurements depend on the configuration of the function, set either by a connected cloud application or manually in the Panel Server webpages.

For Panel Server Entry and Universal, the sampled data is pushed to a buffer before being published. The buffer stores data for up to one month and publishes to the cloud application when data publication is activated or when the connection is restored after an interruption.

For Panel Server Advanced, the data is logged in the Panel Server.

Availability

This function is available on Panel Server Entry, Universal, and Advanced.

Setting the Parameters

Activate data sampling on the EcoStruxure Panel Server webpages, at Settings > Data Management > Data sampling.

Data Sampling Configuration from Cloud Application

When a connection to a cloud application is enabled, data sampling is automatically activated and configured by the cloud system. The settings are not editable (read only) with Panel Server webpages.

Data measured on the connected devices is sampled and published to the cloud application.

Manual Data Sampling Configuration

Manual data sampling allows you to configure the measurements to be sampled for each device in the system:

• Modbus devices

• Wireless devices

• Input/output devices

After the commissioning of all the devices connected to the Panel Server, the choice of measurements and sampling period can be set individually for each device in the Settings > Data Management webpage :

1. For each device, click the device name.

2. Click Data.

3. Select or deselect sampling for every measurement with the Sampling checkbox.

4. Select the sampling period for the measurement. Refer to Changing the Data Sampling Frequency, if relevant.

5. Click Save to apply changes.

   IMPORTANT: Applying the changes may take up to a few minutes. during which the following pages and functions are not accessible:

   • Home page dashboard (Advanced)

   • Trending - device and aggregated data views (Advanced)

   • Custom models - custom model updates

   • CSV export

   • Backup and restore

   • Data sampling

   • Measurement sampling

Calculation of Valid Configurations for Data Measurements

Changing the Data Sampling Frequency

For Panel Server Advanced, when the sampling period (frequency) is changed locally or by a remote configuration, historical logged data points are retained and migrated to comply with the new sampling period, with the following results:

• Reducing the frequency (for example, changing the period from 5 minutes to 10 minutes): The data points relevant to the reduced frequency are retained. Intermediate data points are deleted.

  NOTICE
  Hazard of loss of data Reducing the sampling frequency results in the permanent loss of intermediate historized data points. Perform a data log export before reducing the frequency to avoid losing data. Failure to follow these instructions can result in equipment damage.

  For more information about exporting data, refer to Exporting Data Locally.

• Increasing the frequency (for example, changing the period from 10 minutes to 5 minutes): Data points for which no historical data exists are duplicated from existing historical data (data points on either side), which may create non-linear trends where linear trends are expected.

Data Sampling Activation and Reset

The following table describes the settings.