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71M6533- DB Demo Board User’s Manual
Status
Word Bit
20
21
22
23
25
26
27
28
31
Name
POWER_BAD
GNDNEUTRAL
TAMPER
SOFTWARE
SAGA
SAGB
SAGC?
F0_CE
ONE_SEC
DESCRIPTION
Set after reset when the read of the power register data has a bad
longitudinal redundancy check or read failure in both copies. Two copies
are used because a power failure can occur while one of the copies is
being updated.
Indicates that a grounded neutral was detected.
Tamper was detected ?**
A software defect was detected.
Element A has a sag condition. This bit is set in real time by the CE and
detected by the ce_busy interrupt (ce_busy_isr() in ce.c) within 8 sample
intervals, about 2.6ms. A transition from normal operation to SAGA
causes the power registers to be saved, because the demo PCB is
powered from element A.
Element B has a sag condition. This bit is set in real time by the CE and
detected by the ce_busy interrupt (ce_busy_isr() in ce.c) within 8 sample
intervals, about 2.6ms.
Element C has a sag condition. See the description of the other sag bits.
A square wave at the line frequency, with a jitter of up to 8 sample
intervals, about 2.6ms.
Changes each accumulation interval.
9.4045*10 *VMAX*IMAX*In_8 Wh.
Table 1-7: MPU Status Word Bit Assignment
MPU ACCUMULATION OUTPUT VARIABLES
Accumulation values are accumulated from XFER cycle to XFER cycle (see Table 1-8). They are organized as
two 32-bit registers. The first register stores the decimal number displayed on the LCD. For example, if the LCD
shows “001.004”, the value in the first register is 1004. This register wraps around after the value 999999 is
reached. The second register holds fractions of the accumulated energy, with an LSB of
-13
The MPU accumulation registers always hold positive values.
The CLI commands with two question marks, e.g. )39?? should be used to read the variables.
XRAM
Word
Address
0x2C
0x44
0x34
0x4C
0x3C
0x2E
0x46
0x36
0x4E
0x3E
0x30
0x48
0x38
0x50
Name
Whi
Whe
VARhi
VARhe
VAh
Whi_A
Whe_A
VARhi_A
VARhe_A
VAh_A
Whi_B
Whe_B
VARhi_B
VARhe_B
Description
Total Watt hours consumed (imported)
Total Watt hours generated (exported)
Total VAR hours consumed
Total VAR hours generated (inverse consumed)
Total VA hours
Total Watt hours consumed through element 0
Total Watt hours generated (inverse consumed) through element 0
Total VAR hours consumed through element 0
Total VAR hours generated (inverse consumed) through element 0
Total VA hours in element 0
Total Watt hours consumed through element 1
Total Watt hours generated (inverse consumed) through element 1
Total VAR hours consumed through element 1
Total VAR hours generated (inverse consumed) through element 1
Page: 32 of 75
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相关代理商/技术参数
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制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Exceeds IEC 62053/ANSI C12.20 Standards
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