As I suspected. All it can do is query the total consumption sent back to your provider by the meter. You can query that from a PC as well so you could graph usage if it interested you. The finest granularity is typically 30 minute intervals though (same with Octopus Energy).
With the PZEM setup I can see and record consumption data 30 times a minute if I wanted, although it's currently set to once per minute. Accurate too, at 1% or better.
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