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71M6533- DB Demo Board User’s Manual
XRAM
Word
Address
Default
Value
Name
Description
PPM/C*26.84. Linear temperature compensation. A positive
0x0B
0
PPMC
value will cause the meter to run faster when hot. This is applied
to both V and I and will therefore have a double effect on
PPM/C *1374. Square law compensation. A positive value will
products.
2
0x0C
0
PPMC2
cause the meter to run faster when hot. This is applied to both V
and I and will therefore have a double effect on products.
This address contains a number that points to the selected pulse
0x0D
0x0E
PULSEX_SRC
PULSEY_SRC
source for the XPULSE output. Selectable pulse sources are
This address contains a number that points to the selected pulse
source for the YPULSE output. Selectable pulse sources are
0x0F
0x10
2
2400
SCAL
VCAL
Count of accumulation intervals for auto-calibration.
Applied voltage for auto-calibration. LSB = 0.1V rms of AC signal
applied to all elements during calibration.
Applied current for auto-calibration. LSB = 0.1A rms of AC signal
0x11
300
ICAL
applied to all elements during calibration. Power factor must be
1.
0x12
0x13
0x14
75087832
50
--
VTHRSHLD
PULSE_WIDTH
TEMP_NOM
Voltage to be used for creep detection, measuring frequency,
zero crossing, etc.
Pulse width in μs = (2*PulseWidth + 1)*397. 0xFF disables this
feature. Takes effect only at start-up.
Nominal (reference) temperature, i.e. the temperature at which
calibration occurred. LSB = Units of TEMP_RAW , from CE.
The count of accumulation intervals that the neutral current must
0x15
--
NCOUNT
be above INTHRSHLD required to set the “excess neutral” error
bit.
The neutral current threshold.
0x16
--
INTHRSHLD
LSB ? IxSQSUM ? 2 16
Table 1-4: MPU Input Parameters for Metering
Any of the values listed in Table 1-5 can be selected for as a source for PULSEW and PULSER. The
designation “source_I” refers to values imported by the consumer; “source_E” refers to energy exported by the
consumer (energy generation).
Number
0
1
2
3
4
5
6
7
Pulse
Source
WSUM
W0SUM
W1SUM
W2SUM
VARSUM
VAR0SUM
VAR1SUM
VAR2SUM
Description
Default for
PULSEW_SRC
Default for
PULSER_SRC
Number
18
19
20
21
22
23
24
25
Pulse
Source
VA2SUM
WSUM_I
W0SUM_I
W1SUM_I
W2SUM_I
VARSUM_I
VAR0SUM_I
VAR1SUM_I
Description
Sum of imported real energy
Imported real energy on element A
Imported real energy on element B
Imported real energy on element
C
Sum of imported reactive energy
Imported reactive energy on
element A
Imported reactive energy on
element B
Page: 29 of 75
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