The meter supports an active load timer, meter operation timer, and run hour. The timer data can be read through register map.
Active load timer:
Active load timer shows how much time a load has been running, based on the
specified minimum current for the load timer setpoint setting.
Meter operation timer:
Meter operating timer shows how long the meter has been powered up.
Run Time:
Run time shows how much time a load has been running, based on accumulated
energy - received and delivered.