Maxim Integrated 71M6521BE Energy Meter IC Family Software - Manual (Page 56)

71M652X Software User’s Guide
Revision 1.7 TERIDIAN Proprietary 56 of 138
© Copyright 2005-2007 TERIDIAN Semiconductor Corporation
5.4.3 Background Tasks
meter_run()
gain_compensation()
meter_run()
Wh_accumulate()
xfer_update = TRUE?
Compute_Phase_Angle()
RTC_Compensation ()
Determine_Frequency()
Determine_Peaks ()
Calc_Voltage_Phase ()
totals_ready = TRUE
no
yes
Compute_RMS()
SelectPulses()
VARh_accumulate()
VAh_accumulate()
Calculate operating time
Calibration requested?
calibrate()
yes
no
Flag interface not
signed on?
Update registers for AMR
yes
END
pcnt_update()
meter_LCD()
Figure 5-11: ce_update