How Do Line Fittings Handle Single-phase Active Energy Meter Readings?

How does Insulation Piercing Connector process the readings of single-phase active energy meters?
The energy consumed by a single-phase active energy meter is cumulative, so its reading is the sum of the energy consumed over a period of time. The reading processing method of a single-phase energy meter is to subtract the reading of the energy meter at the last measurement from the reading of the energy meter at this measurement, which is the energy consumed by the load during the period from the last measurement to this measurement.