Examples of tcg.scada.da.IDataPoint | massapi.com

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Examples of tcg.scada.da.IDataPoint

tcg.scada.da.IDataPoint
Interface class for datapoint.

Expected behaviour for real datapoint:
- Source value: source value from subsystem/poller
- Source quality: source quality from subsystem/poller
- Source timestamp: source timestamp if applicable, otherwise timestamp of last set-source-value
- Output value: source value if not inhibited/overridden
- Output quality: internal calculation
- Output timestamp: source timestamp if not inhibited/overridden
Expected behaviour for virtual datapoint:
- Source value: not applicable. always default value
- Source quality: GoodQuality (default)
- Source timestamp: not applicable. (default = 0)
- Output value: last set-value
- Output quality: internal calculation
- Output timestamp: timestamp of last set-value operation
Expected behaviour for output datapoint (behave like dummy datapoint):
- Source value: not applicable. always default value
- Source quality: not applicable. (default = GoodQuality)
- Source timestamp: not applicable. (default = 0)
- Output value: not applicable.
- Output quality: not applicable.
- Output timestamp: not applicable.
Expected behaviour for calculated datapoint:
- Source value: expression result
- Source quality: GoodQuality if expression is evaluated successfully
- Source timestamp: timestamp of last expression evaluation
- Output value: expression result if not inhibited/overridden
- Output quality: internal calculation
- Output timestamp: timestamp of last expression evaluation, if not inhibited/overridden
Expected behaviour for metering datapoint:
- Source value: accumulated meter value
- Source quality: quality of last reading value
- Source timestamp: timestamp of last reading value
- Output value: accumulated meter value
- Output quality: internal calculation
- Output timestamp: timestamp of last reading value or last manual adjustment
Metering point uses another datapoint as source datapoint for meter reading value.

Note: Metering point is only supported for number and unsigned data type.

Note: Output point is only supported for number and boolean data type.

Note: Engineering conversion is only supported for REAL datapoint with number/unsigned/double data type.

Note: Deadband check is only supported for REAL datapoint with number/unsigned/double data type.

Note: Alarm concept is not applicable to VIRTUAL and OUTPUT datapoint.
@author Yoga

    CosDpValueStruct value = new CosDpValueStruct();
    value.timestamp = 0;
    value.quality = CosDpQualityEnum.QualityGood;


    // update the value
    IDataPoint dp = null;
    boolean boolValue = false;
    for (int i = 0; i < datapoints.size(); i++)
    {
      dp = datapoints.get(i);
      if (dp == null || dp.getSourceType() != ESourceDataType.TYPE_DI)
      {
        continue;
      }


      // TODO: parse DDI and TDI as well


      boolValue = states[dp.getAddress() - offset];
      value.value.boolValue(boolValue);


      // set the dp value
      if (dp.setSourceValue(value) < 0)
      {
        logger.warn("Can not update source value of datapoint "
            + dp.getName());
      }
    }
  }

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Related Classes of tcg.scada.da.IDataPoint

tcg.scada.da.modbus.ModbusSubsystem

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