CARLO GAVAZZI WM4-96 - PROGRAMMING Manual de usuario descargar pdf (Pagina 4)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

WM4-96

V1 R3

Page

1.2.1 Function 04 (read words)

Request frame

Address Function Data address n° of words CRC

1 byte 1 byte 2 byte 2 byte 2 byte

From 1 to 255 04h MSB LSB MSB LSB MSB LSB

NOTE: - The maximum number of word is 120 (240 byte).

- The address 00 is not allowed (it generates no answer)

Answer frame

Address Function n° byte (=2 x n° word)

Values CRC

1 byte 1 byte 1 byte n° byte (=2 x n° word)

2 byte

From 1 to 255

04h MSB LSB … MSB LSB

1.2.2 Function 06 (write one word)

Request frame

Address Function Data address Value CRC

1 byte 1 byte 2 byte 2 byte 2 byte

From 1 to 255 06h MSB LSB MSB LSB MSB LSB

Answer frame

Address Function Data address Value CRC

1 byte 1 byte 2 byte 2 byte 2 byte

From 1 to 255 06h MSB LSB MSB LSB MSB LSB

NOTE: the answer frame is an echo of the request frame, which confirm the execution of the

command.

The write function cannot be used to modify the contents of the energy meter memory area.

1.2.3 Function 80 (read words from Memory Flash)

Request frame

Address Function Word address and number of words CRC

1 byte 1 byte 4 byte (see Flash Memory addressing table)

2 byte

From 1 to 255 80h MSB … … LSB MSB LSB

Answer frame

Address Function Number of byte Value CRC

1 byte 1 byte 1 byte n byte 2 byte

From 1 to 255 80h Number of words x 2 … MSB LSB

IMPORTANT: if the address is 00 (zero) all the instruments connected to the network will execute

the command but won’t send an answer frame.

Gross Automation (877) 268-3700 · www.carlogavazzisales.com · [email protected]

1 2 3 4 5 6 7 8 9 ... 56 57

Comentarios a estos manuales

Sin comentarios

CARLO GAVAZZI WM4-96 - PROGRAMMING Manual de usuario Pagina 4

Comentarios a estos manuales

Relacionado con productos y manuales para Redes CARLO GAVAZZI WM4-96 - PROGRAMMING