SA9103E
Byadaptingthe"Read/Reset"ratetothelinecurrenttheaccuracyofthemeasurement
can be achieved down to lowest signal levels.
Read, Reset and Read/Reset of integrator for active energy
RD
RD
RE S
RE S
RE S
RD
RD/
RE S
ST ART
BI T
S TOP
BI T
D R -0 0 9 2 0
The register access codes which can be written to the SA9103E via the serial
communications port are shown in the table below:
REGISTER
READ
RESET
READ-RESET
Active
$01
$02
$03
From the two bytes of data output by the device, the value for the register may be
derived as shown:
Register value = (first byte 256) + second byte
*
The most significant bit of the 16 bit energy register is an indication fo the direction
of the energy flow (0 = positive, 1 = negative)
Data on SOUT
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
FIRST BYTE
SECOND BYTE
DR-00923
7/14
sames
SAMES [ SAMES ]
