oPVRangeOperatingAutoScale custom property

The SA_OperatingRange symbol includes the oPVRangeOperatingAutoScale custom property.

When oPVRangeOperatingAutoScale is True, the SA_OperatingRange symbol uses the value of the oPVRangeOperatingPercent custom property to set percentage boundaries above and below a setpoint value to establish a normal operating range. When a measured value is outside of the normal operating range around the setpoint, the symbol goes into full range mode and displays full range flags.

The reference value of oPVOperatingPercent is used to internally calculate updated oPVRangeOperatingMin and oPVRangeOperatingMax custom property values using the following formulas:

• oPVRangeOperatingMin = Setpoint - (oPVOperatingPercent/100 x Setpoint)

• oPVRangeOperatingMax = Setpoint + (oPVOperatingPercent/100 x Setpoint)

  Note: Make sure the object attribute references to both custom properties are writeable during run time.

During run time, the symbol uses the percentage range around the setpoint as the symbol's graphic scale with the setpoint always at the midpoint between the minimum and maximum limits. When a measured value moves outside of the percentage range around the setpoint, the symbol's graphic scale changes to use the limits set by the oPVRangeFullScaleMin and oPVRangeFullScaleMax custom properties. The symbol shows full scale flags to indicate that it is in full range mode.

If oPVRangeOperatingAutoScale is set to False during run time, new values need to be set for the oPVRangeOperatingMin and oPVRangeOperatingMax custom properties. Otherwise, they remain according to the last calculation.

Assign values to the oPVRangeOperatingAutoScale custom property

Related Wizard options and custom properties

Associated Wizard options

• Orientation: True

• OperatingAutoScaleEnabled

Associated custom properties

• oPVRangeOperatingAutoScale

• oPVRangeOperatingMax

• oPVRangeOperatingMin