ConstReadonlyattributes: { ReadonlycumulativeIndicates when cumulative measurements were most recently zero.
Readonlyevents: { ReadonlycumulativeThis event shall be generated when the server takes a snapshot of the cumulative energy imported by the server, exported from the server, or both, but not more frequently than the rate mentioned in the description above of the related attribute.
A ElectricalEnergyMeasurementCluster supports these elements if it supports feature CumulativeEnergy.