DOCA0172EN-12

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.

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 .

NOTE: In the case of manual configuration, set the sampling frequency and measurements individually before activating 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.

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 .

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

NOTE: The default sampling configuration for every device comprises of the most commonly used data for each device type.

Calculation of Valid Configurations for Data Measurements

Consider how much data is being sampled across the devices when defining the sampling parameters for the system. To maintain system performance, it is recommended to follow these performance criteria:
  • A maximum of 5,000 simultaneous individual data points from different devices whatever the type (wireless, Modbus-SL, or Modbus TCP/IP, input/output devices)

  • A maximum of 500 samples per minute

  • A maximum of 100 individual alarms for monitoring and sending email notifications

    NOTE: Any remote configuration that tries to enable more than these limits is rejected.

The following tables shows examples of data sampling configurations and indicates if they are valid or not:

Number of devices Number of measurements Sampling period (min) Total number of sampled data points Samples per minute Number of alarms Valid configuration

30

30

15

900

60

90

Yes - < 5,000 simultaneous measurements, < 500 samples per minute and < 100 alarms

30

30

15

900

60

150

No - number of alarms > 100

30

170

10

5,100

51

90

No - total number of simultaneous measurements > 5,000

30

30

1

900

900

90

No - samples per minute > 500

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.

  • 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.

Parameter Description

Activation mode

Used to activate/deactivate data sampling by the Panel Server .

  • Click button Activate sampling to activate the function.

  • Click button Deactivate sampling to deactivate the function.

Flush data

Used to delete all sampling data. To delete data:

  1. Deactivate data.

  2. Click button Flush data.

    NOTE: During the operation, which may take up to a few minutes, the following pages and functions are not accessible:
    • Home page dashboard

    • Trending - device and aggregated data views

    • Custom models - custom model updates

    • CSV export

    • Backup and restore

    • Data sampling

    • Measurement sampling

  3. Confirm the data flush request by clicking Confirm in the popup message

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

Was this helpful?