Maxim Integrated 71M6521BE Energy Meter IC Family Software - Manual (Page 43)

71M652X Software User’s Guide
Revision 1.7 TERIDIAN Proprietary 43 of 138
© Copyright 2005-2007 TERIDIAN Semiconductor Corporation
Feature Code
Size
8KB 16KB 32KB Description
Wh equation 1 0.2KB N N/opt N/opt
Wh equation 2 0.2KB N/opt N/opt N/opt
Frequency
register 0.1KB N Y Y Inhibited if freq > 70Hz or voltage is below the
threshold
Wh net metering 0.4KB N N/opt Y Used only for automatic calibration. No display is
provided.
Wh export register 0.25KB N N/opt N/opt Wh exported, display reads “3 999999”
Wh export pulse
output 0.25KB N N/opt N/opt Wh exported, display reads “3 999999”
VARh register 0.1KB N N/opt Y For autocalibration, and power factor calculation,
signed (net metering).
VARh pulse
output 0.25KB N N/opt Y
VARh import
register 0.4KB N N/opt Y
VARh import
pulse output 0.25KB N N/opt Y
VARh export
register 0.4KB N N/opt Y
VARh export
pulse output 0.25KB N N/opt Y
Operating hours
register 0.36KB N N/opt N/opt “5 99999.9” Nonvolatile count of tenths of hours of
powered operation since first cold start.
RCT time register 0.18KB N/opt Y Y
RCT date register 0.21KB N/opt Y Y
Pulse source
selection 0.4KB N N/opt Y This is the ability to route most calculated energy
values to a pulse output. The 8K code provides only
Wh pulses.
Dual IMAX
registers 0.2KB Y Y Y IMAX2 adjusts current, Wh and VARh from channel B
to same units as A. Creep thresholds are required,
but need not be adjusted when IMAX2 changes.
RMS current
register 0.2KB N N/opt Y Implemented for two phases “P”, 1 & 2 “1.P 000.000”
RMS voltage
register 0.2KB N N/opt Y Implemented for two phases “P”, 1 & 2 “1.P 000.000”
Power factor
register 0.3KB N N/opt N/opt Two phases are displayed with sign. Reset at reset
and the start of each minute. Volatile.
Table 5-6: Power Registers and Pulse Output Features