XE2422H Ver la hoja de datos (PDF) - Unspecified

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XE2422H

Low-Cost, 2400 BPS Surface-Mount Modem

Unspecified 

XE2422H AT Commands

An asterisk indicates the factory default

A - Answer Command -

D - Dial Command -

0-9, A-D, #, * = Dialing Digits

P = Pulse dial

T = Tone dial

, = Pause for two seconds

I = Pause for 125 milliseconds

; = Return to the command state

En - Command Echo

n=0 Do not echo commands

n=1 Enable command echo *

Hn - Switch Hook Control -

n=0 Switch hook relay opens

n=1 Switch hook relay closes

In - Modem Identification

:I Read Interrupt Register - Read and reset

the interrupt status register S09

O - Return On Line

SR? - Read Value of register R

SR=n - Write value “n” into register “R”.

The values of both “n” and “R” are hexa-

decimal.

Vn - Result Codes -

n=0 Single Character Result Codes

n=1 Result Codes followed by a Carriage

Return*

Z - Reset -

z - Wake from Sleep Mode on Ring

!1<message> - Switch to Pulse Mode: This

command must follow the dialing command in the

same command string.

!2<message> - Switch to FSK Mode: This

command must follow the dialing command in the

same command string. This command allows the

modem to establish a 300 bps half-duplex FSK

signal.

X1 - FSK Signal Search: Turns off the modem

transmitter and monitors the line for an

acknowledgment.

X2 - Return On-line as Transmitter: Places

the modem in the transmit mode during FSK half-

duplex operation.

X3: - Return on-line as Receiver: Places the

modem in the receive mode during FSK half-

duplex operation.

~ - Resend Last Pulse Mode Message:

XECOM

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XE2422H

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