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ML7012-04

2400 bps Single Chip Full Duplex Data Modem with Protocol

Oki Electric Industry 

1Semiconductor

FEDL 7012-04-01

ML7012-04

COMMAND DESCRIPTIONS

AT Commands

(1) Command format

AT commands begin with <AT> or <at>. Character strings to a carriage return code are interpreted as commands

to be executed successively. A result code is returned to DTE after the completion of interpretations.

AT

Characters

CR

LF

However, the commands of A, D, Dc, On, Zn, Ax, &Tn and &Zn must be set at the end of the sequence of

commands.

Any commands set after those commands are ignored.

The maximum command character string is 40 characters (space <20h> is ignored).

Input characters can be deleted by a backspace function (a cord is changeable).

<CR> is a Carriage Return code (changeable).

<LF> is a Line Feed code (not mandatory and changeable).

Both capital and small letters can be recognized with the exception of At and aT. The communication with the

terminal when inputting commands is handled as an asynchronous mode, and the character format is checked

automatically as soon as <AT> or <at> is input.

This device cannot be guaranteed for normal operation when character strings or parameters not listed below are

input.

(2) Terminal data speed and character format

The communication mode to DTE with the V.24 interface is as follows:

Terminal data speed: 9600/2400/1200/300 bps

Character format: Listed below

Start Bit

1

1

1

1

Data Bit

7

7

7

8

Parity

None

Odd number

Even number

None

Stop Bit

2

1

1

1

Character Length

10

10

10

10

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