Short period (less than 1 minute) of recording data logs is not recommended.
Such application might short live time of memory in power meter, complicated to analyzing and not optimal.
Instead, PM180 has embedded event driven smart data/events recorder.
User should just set triggers to recording abnormal values.
Such monitoring will be significantly more effective and will prevent receiving, storing, analyzing bulk extra data and optimize communication traffic.
When a system needs 1 second update it is normally performed via the real time Modbus registers and not data log.
Recording by special conditions may be combined with periodical (number of minutes period) recording into some data log
or can be recorded to different logs.
Up to 4 triggers in each setpoint can be combined by "AND" or "OR" conditions (except EM/PM13X devices).
Additionally PM175, PM180, EM720, EM920, SA300 devices have automatic PQ Recorder and Fault Recorder.