ADSST-EM-2030 Analog Devices, ADSST-EM-2030 Datasheet - Page 12

• Manufacturer Part Number: ADSST-EM-2030
• Description: 3-Phase Electronic Energy Meter Chipset
• Manufacturer: Analog Devices

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DataSheet
ADSST-EM-2030
Table XXII shows various commands that can be sent to the ADSST-EM-2030 chipset by the microcontroller on the SPI communi-
cation port. The chipset writes the specific number of bytes for each data parameter specified in the data column of the table. The data
that can be written to the chipset could be calibration constants.
Data Structure in the Packet
The ADSST-EM-2030 sends out seven bytes of data for every command. The last bytes of a 6-byte structure are kept at zero and
should be neglected.
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Data
GAIN CALIBRATION
POWER CALIBRATION CONSTANTS AT HIGH CURRENT RANGE
POWER CALIBRATION CONSTANTS AT LOW CURRENT RANGE
PHASE COMPENSATION COEFFICIENTS
Command to ADSST-EM-2030: 0x81
Acknowledgment from ADSST-EM-2030: 0xB1
Byte No.
10
1
2
3
4
5
6
7
8
9
S
P
1
Voltage Coefficient
Current Low Gain Coefficient
Current High Gain Coefficient
A-Phase Power Constant at High Current
(with E-Pulse and Counter Pulse)
B-Phase Power Constant at High Current
C-Phase Power Constant at High Current
A-Phase Power Constant at Low Current
B-Phase Power Constant at Low Current
C-Phase Power Constant at Low Current
A-, B-, C-Phase Coefficient
B
Table XXIII. Byte Wise Packet Data Structure for Voltage Gain Constants
C
W
2
V
W
Name
SPB
CWV
WAVM
WAVL
WBVM
WBVL
WCVM
WCVL
NLV
CSUM
A
3
V
M
Table XXII. Interpretation of the Energy Data
W
A
4
V
L
Description
Start Packet Byte (0xEE)
Command to Write Voltage Constant
Voltage Constant for A-Phase – MSB
Voltage Constant for A-Phase – LSB
Voltage Constant for B-Phase – MSB
Voltage Constant for B-Phase – LSB
Voltage Constant for C-Phase – MSB
Voltage Constant for C-Phase – LSB
No Legal Value (0x00)
Checksum
W
B
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5
V
M
–12–
W
B
6
V
Command to
ADSST-EM-2030
0x81
0x82
0x83
0x87
0x89
0x8B
0x86
0x88
0x8A
0x95
L
W
C
7
V
M
W
C
8
V
L
N
9
L
V
Data Bytes
6
6
6
4
2
2
2
2
2
6
C
S
0 1
U
M
REV. 0