User guide

71M6533-DB Demo Board User’s Manual
Page: 32 of 75 ` REV 3
Status
Word Bit
Name
DESCRIPTION
20
POWER_BAD
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.
21
GNDNEUTRAL
Indicates that a grounded neutral was detected.
22
TAMPER
Tamper was detected †**
23
SOFTWARE
A software defect was detected.
25
SAGA
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.
26
SAGB
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.
27
SAGC‡
Element C has a sag condition. See the description of the other sag bits.
28
F0_CE
A square wave at the line frequency, with a jitter of up to 8 sample
intervals, about 2.6ms.
31
ONE_SEC
Changes each accumulation interval.
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
9.4045*10
-13
*VMAX*IMAX*In_8 Wh.
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
Name
Description
0x2C
Whi
Total Watt hours consumed (imported)
0x44
Whe
Total Watt hours generated (exported)
0x34
VARhi
Total VAR hours consumed
0x4C
VARhe
Total VAR hours generated (inverse consumed)
0x3C
VAh
Total VA hours
0x2E
Whi_A
Total Watt hours consumed through element 0
0x46
Whe_A
Total Watt hours generated (inverse consumed) through element 0
0x36
VARhi_A
Total VAR hours consumed through element 0
0x4E
VARhe_A
Total VAR hours generated (inverse consumed) through element 0
0x3E
VAh_A
Total VA hours in element 0
0x30
Whi_B
Total Watt hours consumed through element 1
0x48
Whe_B
Total Watt hours generated (inverse consumed) through element 1
0x38
VARhi_B
Total VAR hours consumed through element 1
0x50
VARhe_B
Total VAR hours generated (inverse consumed) through element 1