Rollover digits setting

The Rollover Digits setting (Meter Data Management > Tools > Estimation > Estimation Sets) introduced in IEE version 10.4 allows you to specify the number of digits that will be used by the register estimation routines to manage rollovers. By default, the Rollover Digits settings is set to zero.

• When the Rollover Digits setting is not set (set to zero), the register estimation routines will use the existing Number of Dials attribute in the meter register channel to manage rollovers. This is the existing behavior.

• When the Rollover Digits is set, the register estimation routines will use the specified number of digits to manage rollovers. For example, Number of Dials = 5, Rollover Digits = 6. The register estimation routines will allow estimated reads up to 6 digits. In this scenario, the register estimation routines will allow estimated reads up to 6 digits before rolling over.

Register estimation routines that observe this setting are Average recent load projection and Usage calculation. The Copy forward register estimation routine does not observe this setting because it only copies previously good register reads.

Note: The Overflow Check register validation rule performs the validation based on the Number of Dials attribute. When this Rollover Digits setting is set to a number bigger than the Number of Dials, this validation will fail.

For more information, see Creating and editing estimation sets.