PID Configuration Dialog Box - Alarms Tab Overview
Use this tab to set up alarms triggered by the PID instruction.
Parameters
Process Variable (PV) High
The value at which the PV High alarm is set to true. This is the highest PV value the system can tolerate.
Process Variable (PV) Low
The value at which the PV Low alarm is set to true. This is the lowest PV value the system can tolerate.
Process Variable (PV) Deadband
This is a one-sided deadband. The alarm bit is not set until the PV crosses the deadband and reaches the alarm limit. The alarm bit remains set until the PV passes back through and exits from the deadband.
Positive Deviation
Enter a positive deviation value (.DVP).
Negative Deviation
Enter a negative deviation value (.DVN).
Deviation Deadband
Enter a deviation alarm deadband value (.DVDB).
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