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71M6543 Demo Board User’s Manual
state_bit_ar
y
wh_im
wh_ex
varh_im
varh_ex
dmd_max
dmd_max_rtc
v_bat
acc_cnt
tamper_sec
sag_sec
Status of meter.
Nonvolatile.
Wh energy register.
Nonvolatile.
Wh exported energy
register. Nonvola-
tile.
VARh register.
Nonvolatile.
VARh exported reg-
ister. Nonvolatile.
Maximum demand,
W
Time of maximum
demand.
Battery voltage at
last measurement.
Volatile; not saved
on power failure.
Count of accumula-
tion intervals since
reset, or last clear.
Cleared with )1=2 or
meter read. Volatile;
not saved on power
failure.
Counts seconds
that tamper errors
were asserted.
Cleared with )1=2 or
meter read. Nonvol-
atile.
Counts seconds
that voltage low
error occurred. or
meter read. Nonvol-
atile.
Bits:
See table below.
First 32-bit number is a count of
pulses, =3.2 Wh in 3-phase me-
ters, or 1 in 1-phase. A frac-
tional pulse is present in the CE
data, but not preserved.
Like wh_im
Like wh_im
Like wh_im
Units of w0sum
Standard time and date struc-
ture.
0.1V
count
This is a tamper measurement.
This is a power quality meas-
urement.
0 = no errors
n/a
n/a
n/a
n/a
n/a
year, month,
date, hour, min
n/a
n/a
n/a
n/a
)30
)31
)32
)33
)34
)35
)36..
3A
)3B
)3C
)3D
)3E
unsigned
signed
unsigned
signed
signed
signed
signed
32
64
64
64
64
32
7x8
8
32
32
32
in_sec
3
Counts seconds
that neutral current
error was asserted.
Cleared with )1=2 or
meter read. Nonvol-
atile.
This is a power quality meas-
urement.
n/a
)3F
signed
32
rtc_copy
save_cnt
data_ok_reg
Clock time and date
when data was last
read from the RTC.
Number of power
register saves.
Checks data.
Standard time and date struc-
ture. year, month, date, hour,
min, sec
n/a
n/a
n/a
n/a
n/a
)40..
45
)46
)47
unsigned
unsigned
unsigned
8*7
16
16
Valid only when autocalibration is integrated. Meters with metering equations with differential currents or voltages do
Requires features not in some demo PCBs.
1
not normally support autocalibration.
2
Page: 29 of 91
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