Deadband Processor

The “Deadband Processor” is installed with the Dataristix Application. The processor accepts any input values and forwards the values after a configurable deadband value is exceeded. Deadband threshold values may be specified as a percentage or as an absolute value.

The first input value is always forwarded, since there is no previous value to compare against yet.

For the “percentage” option, subsequent values are forwarded when the absolute change in the new value compared to the last forwarded value equals or exceeds the given percentage of the last forwarded value. If the last forwarded value is zero, the new value is always forwarded (the percentage cannot be calculated).

For the “absolute value” option, subsequent values are forwarded when the absolute change in the new value compared to the last forwarded value equals or exceeds the given absolute value.

Add to Task

Add the “Deadband Processor” to a task by dragging it from the “Build” panel onto the task’s “Task Builder” panel.

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Configuration

Select the “Deadband Processor” item in the “Task Builder” panel to view its properties.

You can change the following properties:

  • Name
    The title of the “Deadband Processor” as it appears within the task builder.
  • Deadband Threshold
    A percentage or absolute threshold value.
  • The threshold is a percentage / The threshold is an absolute value
    Select one of these two radio button options to determine whether the threshold above is interpreted as a percentage or as an absolute value.

Press the “Apply” button to commit your changes.

Example

The following example shows a task that receives some signals from the OPC UA Connector. Signals are forwarded to the CSV Connector when a deadband of one percent is exceeded.

../../_images/processor-deadband-example.png