参数资料
型号: 71M6511-DB
厂商: Maxim Integrated Products
文件页数: 36/115页
文件大小: 0K
描述: BOARD DEMO 71M6511 ENERGY METER
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6511
已供物品: 2 个板,线缆,CD,电源
71M6511/71M6511H Demo Board User’s Manual
1.10.2 DEMO CODE MPU PARAMETERS
In the Demo Code, certain MPU XRAM parameters have been given fixed addresses in order to permit easy
external access. These variables can be read via the serial interface, as described in section 1.8.1, with the
)n$ command and written with the )n=xx command where n is the word address. Note that accumulation
variables are 64 bits long and are accessed with )n$$ (read) and )n=hh=ll (write) in the case of accumulation
variables.
MPU INPUT PARAMETERS
All MPU Input Parameters are loaded by the MPU at startup and should not need adjustment during meter
calibration.
MPU Input Parameters for Metering
XDATA
Word
Address
Default
Value
Name
Description
For each element, if WSUM_X or VARSUM_X of that element exceeds
W CREEP_THR , the sample values for that element are not zeroed.
Otherwise, the accumulators for Wh, VARh, and VAh are not updated
0x00
8311
WCREEP_THR
and the instantaneous value of IRMS for that element is zeroed.
LSB = 6.6952*10 -13 VMAX IMAX Wh
The default value 8310 is equivalent to 2.5Wh/h.
Demo Code revision 3.05: WCREEP_THR applies to phase A only.
Bit 0: Sets VA calculation mode.
0x01
0
CONFIG
0: V RMS *A RMS
1:
W 2 + VAR 2
Bit 1: Clears accumulators for Wh, VARh, VAh. This bit need not be
reset.
0
Demo Code revision 3.04: Not implemented.
Demo Code revision 3.05: When the voltage exceeds this value, bit 5
in the MPU status word is set, and the MPU might choose to log a
0x02
191181742
PK_VTHR
warning. Event logs are not implemented in Demo Code.
LSB = 6.6952*10 -13 *VMAX 2 V 2 h RMS
The default value of 191181742 is equivalent to 407.3V RMS if VMAX =
600V and a 1-second accumulation interval is used.
0
Demo Code revision 3.04: Not implemented.
Demo Code revision 3.05: When the current exceeds this value, bit 6
in the MPU status word is set, and the MPU might choose to log a
0x03
24856631
PK_ITHR
warning. Event logs are not implemented in Demo Code.
LSB = 6.6952*10 -13 *IMAX 2 V 2 h RMS
The default value of 24856631 is equivalent to 50.9A RMS if IMAX =
208A and a 1-second accumulation interval is used.
The nominal external RMS voltage that corresponds to 250mV peak at
0x09
6000
VMAX
the ADC input. The meter uses this value to convert internal quantities
to external. LSB=0.1V
The nominal external RMS current that corresponds to 250mV peak at
0x0A
2080
IMAX
the ADC input. The meter uses this value to convert internal quantities
to external. LSB=0.1A
Page: 36 of 115
? 2005-2007 TERIDIAN Semiconductor Corporation
Revision 5.4
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