SA9603C

sames

9/18

From the two bytes of data output by the device, the value for the register can

be derived as shown:

Register value =

(First Byte * 256) + Second Byte

The register value is represented in two's compliment in order to provide for

positive and negative register values.

The most significant bit of the 16 bit energy register (active or reactive) may be

used as an indication of the direction of the energy flow (0 = positive, 1 =

negative).

The register access codes which may be written to the SA9603C via the serial

communications port, are shown in the table below:

REGISTER

READ

RESET

READ-RESET

DUMP

ACTIVE

$01

$02

$03

RE-ACTIVE

$81

$82

$83

$84

FREQUENCY

$41

-

-

$44

VOLTAGE

$C1

$C2

$C3

$C4

effect.

Data on SOUT

Commands for the voltage integrator

D R - 00835

FI R S T

B Y TE

8

9

10

11

12

13

14

15

S E C O ND

BY T E

0

1

2

3

4

56

7

DUM P

STA RT

BIT

DR-01362

RD /

RE S

DUM P

RD

RE S

RD

RE S

RD

RE S

STO P

BIT