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STMP3x measurement calculations

Question asked by Mehul Laliwala on Nov 6, 2017
Latest reply on May 6, 2018 by Nicolas Cuadrado

Currently, I am evaluating STPM3x, but having hard time understanding how to convert register value to floating point signed integer values.

I can calculate voltage and current rms values, but I am trying to convert apparent power  (reg. 90) , active power (reg. 84), and reactive power(reg.88).

Any examples would be helpful.  Datasheet is not clear.


Thanks in advance!