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PIC18F87J72 Single-Phase Energy Meter Reference Design
3.2
COMPLETE REGISTER LIST
TABLE 3-1:
INTERNAL REGISTER SUMMARY
Name
Bits
R/W
Description
8
R/W Configuration register for operating mode of the meter.
8
R
STATUS register.
8
16
R/W Configuration register for calibration control.
R/W 2 n number of line cycles to be used during energy accumulation.
RAW_ENERGY_ACT
RAW_ENERGY_APP
RAW_ENERGY_REACT
16
64
16
16
64
16
16
16
64
32
32
64
32
32
32
64
32
64
8
8
32
64
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Counter for number of line cycles.
Raw 2 RMS value from the current A/D converter in LSBs.
Raw RMS value from the current A/D converter in LSBs.
RMS value of the current, post Calibration.
Raw 2 RMS value from the voltage A/D converter in LSBs.
Raw RMS value from the voltage A/D converter in LSBs.
RMS value of the voltage, post Calibration.
Line Frequency.
Raw Active Power.
Final Active Power, units in watts (W).
Final Apparent Power, units in volt-amperes (VA).
Raw Reactive Power.
Final Reactive Power, units in volt-amperes-reactive (VAR).
Period register.
Final Active Energy accumulated.
Raw Active Energy accumulated.
Final Apparent Energy accumulated.
Raw Apparent Energy accumulated.
Not implemented.
Not implemented.
Final Reactive Energy accumulated.
Final Reactive Energy accumulated.
MODE1_DEF
DS51931A-page 20
8
16
16
16
16
32
16
32
16
16
16
16
8
8
16
16
16
R/W Phase compensation between voltage and current.
R/W Offset adjustment for RMS current reading.
R/W Offset adjustment for RMS voltage reading.
R/W Gain adjustment for RMS current.
R/W Gain adjustment for RMS voltage.
R/W Active Power offset.
R/W Active Power gain adjust.
R/W Offset correction for Reactive Power.
R/W Reactive Power gain adjust to produce X VAR/LSB.
R/W Not implemented.
R/W Not implemented.
R/W Not implemented.
R/W Defines CF pulse width from 0 to 255 x 0.8192 ms (0.209s).
R/W Active Energy Pulse Output correction factor.
R/W Active Energy Pulse Output correction factor.
R/W Power-Up Configuration Register.
R/W Calibration Status.
? 2011 Microchip Technology Inc.
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