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71M6533-DB Demo Board User’s Manual
Page: 29 of 75 ` REV 3
XRAM
Word
Address
Default
Value
Name
Description
0x0B
0
PPMC
PPM/C*26.84. Linear temperature compensation. A positive
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
products.
0x0C
0
PPMC2
PPM/C
2
*1374. Square law compensation. A positive 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 products.
0x0D
PULSEX_SRC
This address contains a number that points to the selected pulse
source for the XPULSE output. Selectable pulse sources are
listed in Table 1-5.
0x0E
PULSEY_SRC
This address contains a number that points to the selected pulse
source for the YPULSE output. Selectable pulse sources are
listed in Table 1-5.
0x0F
2
SCAL
Count of accumulation intervals for auto-calibration.
0x10
2400
VCAL
Applied voltage for auto-calibration. LSB = 0.1V rms of AC signal
applied to all elements during calibration.
0x11
300
ICAL
Applied current for auto-calibration. LSB = 0.1A rms of AC signal
applied to all elements during calibration. Power factor must be
1.
0x12
75087832
VTHRSHLD
Voltage to be used for creep detection, measuring frequency,
zero crossing, etc.
0x13
50
PULSE_WIDTH
Pulse width in µs = (2*PulseWidth + 1)*397. 0xFF disables this
feature. Takes effect only at start-up.
0x14
--
TEMP_NOM
Nominal (reference) temperature, i.e. the temperature at which
calibration occurred. LSB = Units of TEMP_RAW, from CE.
0x15
--
NCOUNT
The count of accumulation intervals that the neutral current must
be above INTHRSHLD required to set the “excess neutral” error
bit.
0x16
--
INTHRSHLD
The neutral current threshold.
16
2IxSQSUM LSB
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
Pulse
Source
Description
Number
Pulse
Source
Description
0
WSUM
Default for
PULSEW_SRC
18
VA2SUM
1
W0SUM
19
WSUM_I
Sum of imported real energy
2
W1SUM
20
W0SUM_I
Imported real energy on element A
3
W2SUM
21
W1SUM_I
Imported real energy on element B
4
VARSUM
Default for
PULSER_SRC
22
W2SUM_I
Imported real energy on element
C
5
VAR0SUM
23
VARSUM_I
Sum of imported reactive energy
6
VAR1SUM
24
VAR0SUM_I
Imported reactive energy on
element A
7
VAR2SUM
25
VAR1SUM_I
Imported reactive energy on
element B
- 71M6533-DB Demo Board 1
- 71M6533 2
- Table of Contents 3
- List of Figures 4
- List of Tables 5
- Page: 6 of 75 ` REV 3 6
- 1 GETTING STARTED 7
- 1.5 COMPATIBILITY 8
- 1.7 DEMO BOARD TEST SETUP 8
- DEMONSTRATION METER 9
- 1.7.2 POWER SUPPLY SETUP 10
- 1.7.3 CHECKING OPERATION 10
- ` REV 3 11
- >, should 12
- 1.8 USING THE DEMO BOARD 13
- FORMERS 21
- 1.9 CALIBRATION PARAMETERS 23
- 1.10 DEMO CODE 27
- 2I0SQSUM LSB 28
- 2V0SQSUM LSB 28
- 2IxSQSUM LSB 29
- 2VxSQSUM LSB 30
- Page: 34 of 75 ` REV 3 34
- 2 APPLICATION INFORMATION 35
- SXIXVSXIXV 36
- 2.2 CALIBRATION PROCEDURES 38
- PHADJPHADJ 41
- Page: 43 of 75 ` REV 3 43
- 2.3 POWER SAVING MEASURES 46
- 2.4 SCHEMATIC INFORMATION 46
- 2.4.3 OSCILLATOR 47
- 2.4.4 EEPROM 47
- 2.4.5 LCD 48
- 2.4.6 OPTICAL INTERFACE 48
- 2.5 TESTING THE DEMO BOARD 49
- Calibrated 50
- 2.5.2 EEPROM 51
- 2.5.3 RTC 51
- 2.5.5 LCD 52
- 2.6 APPLICATION NOTES 53
- Page: 54 of 75 ` REV 3 54
- 3 HARDWARE DESCRIPTION 55
- Reference 56
- Designator 56
- PCB Dimensions 58
- Environmental 58
- 4 APPENDIX 59
- REV 3 60
- Page: 61 of 75 REV 3 61
- Page: 62 of 75 REV 3 62
- Page: 63 of 75 REV 3 63
- REV 3 64
- Page: 65 of 75 REV 3 65
- Page: 66 of 75 REV 3 66
- Page: 68 of 75 REV 3 68
- Page: 69 of 75 REV 3 69
- Power/Ground/NC Pins: 70
- Analog Pins: 70
- Digital Pins: 71
- Teridian 73
- Page: 74 of 75 REV 3 74
- 5 REVISION HISTORY 75
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