CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manual de usuario descargar pdf (Pagina 5)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

WM24-96

V1 R0

Page

1.3 MEMORY AREA

WM24-96 manages three different memory areas addressed as follows.

Memory area Area Byte reading order

Internal RAM (page 0)

0080h 00FFh LSB, MSB

Internal RAM (page 1)

0100h 017Fh LSB, MSB

EEPROM

0C00h 0CFFh LSB, MSB

NOTE: in the following pages the following notation will be used:

1 int = 4 byte;

1 short = 2 byte;

1 word = 2 byte;

1 byte = 8 bit.

1.4 WM24-96 IDENTIFICATION CODE

Every Carlo Gavazzi’s instrument is identified by means of a code stored in address 0Bh, in order to

recognise the type of the instrument via serial communication. The WM24-96 code is 0012h.

This code can be read with the following fixed frame:

Instrument code request frame (8 byte):

01h 04h 00h 0Bh 00h 01h CRC CRC

Instrument code answer frame (7 byte):

01h 04h 02h 00h 12h CRC CRC

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CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 Manual de usuario Pagina 5