Maxim Integrated 71M6521BE Energy Meter IC Family Software - Manual (Page 76)

71M652X Software User’s Guide
Revision 1.7 TERIDIAN Proprietary 76 of 138
© Copyright 2005-2007 TERIDIAN Semiconductor Corporation
Name Purpose Function or LSB Value CLI Format L in
bits XDATA
Ical Current value to be
used for autocalibra-
tion** Nominal RMS current applied to
all elements during auto-calibra-
tion (LSB = 0.1V). Power factor
must be 1. )11 unsigned 16 0x0023
VThrshld Voltage at which to
measure frequency,
zero crossing, etc. SQSUM V LSB 0 2 16 =
This feature is approximated using
the CE’s sag detection.)
)12 unsigned 16 0x0025
PulseWidth Maximum time pulse
is on. t = (2*PulseWidth + 1)*397µs,
0xFF disables this feature. Takes
effect only at start-up. )13 signed 16 0x0029
temp_nom Nominal tempera-
ture, the temperature
at which calibration
occurs.
Units of TEMP_RAW, from CE.
The value read from the CE must
be entered at this address. )14 unsigned 32 0x002B
ImaxB Scaling maximum
current for PCB ele-
ment B, equivalent to
176mV at the IA pin
0.1A )15 unsigned 16 0x002F
IThrshldB Starting current,
element B
SQSUM I1 2 16 )16 unsigned 32 0x0031
VBatMin* Minimum battery
voltage.
Same as VBAT, below )17 unsigned 32 0x0035
CalCount Count of calibrations Counts the number of times
calibration is saved, to a
maximum of 255 )18 unsigned 8 0x0039
RTC copy Nonvolatile copy of
the most recent time
the RTC was read. Sec, Min, Hr, Day, Date, Month,
Year )19
1A
1B
1C
1D
1E
1F unsigned 8
8
8
8
8
8
8
0x163
deltaT Difference between
raw temperature and
temp_nom
Same units as TEMP_RAW )20 signed 32 0x003B
Frequency* Frequency Units from CE. )21 unsigned 32 0x003F
VBAT* Last measured
battery voltage*
9 2
ADC
n
VBAT
=
ADC counts, logically shifted right
by 9 bits. Note: battery voltage is
measured once per day, except
when it is being displayed or
requested with the BT command.
)22 unsigned 32 0x0043