Deadband Control Tag Type Properties: Setpoints Tab

In this tab, you can configure the low and high setpoints that will be compared to the monitored value.

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High Setpoint and Low Setpoint

The deadband control tag will compare the values in the Setpoint fields with the Monitored Value to determine its own value.

If the Monitored Value exceeds the value of the High Setpoint, the value of this deadband control tag will be 0. The result of this comparison is referred to as the stop condition.

If the Monitored Value is less than the value of the Low Setpoint, the value of this deadband control tag will be 1. The result of this comparison is referred to as the start condition.

Note: The behavior of this deadband control tag can be reversed such that if the Monitored Value is greater than the value of the High Setpoint, the value of this deadband control tag will be 1.

A valid value for the High Setpoint field and the Low Setpoint field can be provided via any of a constant, an expression, or a tag.  Please see Constant, Expression or Tag for help selecting which to use.

Start Delay and Stop Delay

You can enter a value (measured in seconds) in the Start Delay field to set a length of time that to wait after the start condition before setting the value of this deadband control tag to 1.

The Stop Delay field works in the same way:  Enter the number of seconds that the tag should wait after the stop condition before setting the value of this deadband control tag to 0.