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| 型号： | 71M6543F-DB-CT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 30/91页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD 71M6543F-DB-CT |
| 标准包装： | 1 |
| 系列： | * |
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Three-phase ICs only. Some CE codes calculate neutral current rather than measuring it. Consult the CE documenta-
Only in systems with two current sensors.
High accuracy use of this feature may require a calibrated clock.
IEC 62056 Manufacturers’ IDs are allocated by the FLAG association. Maxim does not own or profit from the FLAG
Nothing in the document should be interpreted as a guarantee of conformance to a 3 rd party software specification.
May require calibration for best accuracy.
71M6543 Demo Board User’s Manual
3
tion.
4
5
6
association. Maxim’s default id may not conform, and is for demonstration purposes only.
7
Conformance testing is the responsibility of a meter manufacturer.
8
9
Calibration item in high-precision “H” series meters (71M6543H only).
Table 1-8: Bits in the MPU Status Word
Name
MINIA
MINIB
MINIC
MINVA
MINVB
MINVC
CREEPV
CREEP
SOFTWARE
NEUTRAL
SPURIOUS
SAG
DEMAND
CALIBRATION
RTC_UNSET
HARDWARE
BATTERY_BAD
REGISTER_BAD
RTC_TAMPER
TAMPER
Bit
No.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Explanation
IA is below IThrshld. Current for this phase is in creep.
IB is below IThrshld. Current for this phase is in creep.
IC is below IThrshld. Current for this phase is in creep.
VA is below VThrshld. Voltage for this phase is in creep.
VB is below VThrshld. Voltage for this phase is in creep.
VC is below VThrshld. Voltage for this phase is in creep.
All voltages are below VThrshld.
There is no combination of current and voltage on any phase.
A software defect was detected. error_software() was called. E.g.: An impossible value oc-
curred in a selection, or the timers ran out.
Neutral current was above in_limit for more than in_wait seconds.
An unexpected interrupt was detected.
Voltage was below VThrshld for more than in_wait seconds
Demand was too big (too many watts) to be credible.
Set after reset if the read of the calibration data has a bad checksum, or is from an earlier ver-
sion of software. The default values should be present.
Set when the clock’s current reading is A) Obtained after a cold start, indicating that there was
no battery power, and therefore the clock has to be invalid. B) More than a year after the previ-
ously saved reading, or C) Earlier than the previously saved reading. In this case, the clock’s
time is preserved, but the clock can’t be trusted.
An impossible hardware condition was detected. For example, the woftware times out waiting
for RTC_RD to become zero.
Just after midnight, the demo code sets this bit if VBat < VBatMin. The read is infrequent to
reduce battery loading to very low values. When the battery voltage is being displayed, the
read occurs every second, for up to 20 seconds.
Set after reset when the read of the power register data has a bad longitudinal redundancy
check or bad software version in all 5 copies. Unlikely to be an accident.
Clock set to a new value more than two hours from the previous value.
Tamper was detected. Normally this is a power tamper detected in the creep logic. For exam-
ple, current detected with no voltage.
?
?
Gain in amplifier for IAP/IAN pins selected to 1.
71M6103, 71M6113, or 71M6203 Remote Sensor Interface is used.
Note that some of the register contents can be zeroed out by the MPU when it applies functions contained in its
creep logic.
Page: 30 of 91
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