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AVEVA Enterprise SCADA

Modify the Tag Placement batch size

  • Last UpdatedApr 24, 2025
  • 1 minute read

Note: For information on overriding default configuration settings, refer to Modify configuration settings.

The FlexTag_BatchSize key in the FDC_Configuration.json file controls the maximum number of tags that the system can place with a single Business Logic Tier (BLT) call. The default value of the FlexTag_BatchSize key is 50.

Note: Adjusting this setting may result in an increased number of BLT calls to place tags against telemetered points as configured using fieldDrivenConditionJoin records. AVEVA recommends leaving the FlexTag_BatchSize key at its default value of 50.

To modify the Tag Placement batch size

  1. In the %DNADataRoot%\RealTime\config\Settings directory, either create or open the RealTime_FDCMonitor.json file.

    "RealTime": {

    "FDCMonitor": {

    "StateChangeScannerFrequencySeconds": 1,

    "TagCalculationFrequencySeconds": 1,

    "ConfigUpdateFrequencySeconds": 1,

    "FlexTag_BatchSize": 50

    }

    }

  2. Change the value of the FlexTag_BatchSize key as desired.

    Note: The value must be greater than 0 and less than, or equal to, 50.

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