Manual for PC Connection_PR17.fm
28
AT commands are commands used to set the FOMA terminal functions from a PC. When AT commands
are entered from a PC, the FOMA terminal performs the corresponding operations.
■
AT command input format
AT commands must always start with “AT”. Enter in single-byte alphanumeric characters.
Input example
Each AT command including parameter (number or symbol) following the command must be entered on a single
line. A single line means the characters from the first character until the character directly before the
o
is
pressed. Up to 160 characters (including “AT”) can be entered.
■
AT command input modes
To operate the FOMA terminal using AT commands, set the PC to terminal mode. In terminal mode, the
characters entered from the keyboard are sent directly to the communication port to operate the FOMA terminal.
Offline mode
The FOMA terminal is in stand-by. Normally, this mode is used to operate the FOMA terminal using AT
commands.
Online data mode
The FOMA terminal is connected and performing data communication. When an AT command is entered in
this mode, the characters are sent directly to the receiver, and may cause the receiver’s modem to
malfunction. Do not enter AT commands in this mode.
Online command mode
Even when the FOMA terminal is connected and performing communication, with special operations,
operation by AT commands is possible. When in this mode, AT commands are executed while remaining
connected to the receiver, and communications can be resumed after the operation is completed.
■
Switching between online data mode and online command mode
Use either of the following methods to switch the FOMA terminal from online data mode to online command
mode.
Enter “+++” command, or enter the set code in the “S2” register.
Turn the RS-232C
*
ER signal OFF when set to “AT&D1”.
To switch from online command mode to online data mode, enter “ATO
o
”.
* USB interface emulates an RS-232C signal line, enabling RS-232C signal line control by the communication
application.
List of AT command
AT commands
When a call/transmission is made from an external device with 64K data communication, Number A is used when
2in1 mode is set to [A mode]/[Dual mode]. Number B is used when 2in1 mode is set to [B mode]. However, if Redial
is performed with the AT command when [Dual mode] is set, Redial is performed with the last dialed number.
Terminal mode enables a single PC to operate like a communication terminal. Characters entered from the keyboard
are sent to the device or line connected to the communication port.
ATD
*
99
***
1#
o
Return symbol: Entered by pressing the Enter key. Used to separate commands.
Parameter: The command argument
Command: The command name
Manual for PC Connection_PR17.fm 28 ページ ２０１２年１１月２２日 木曜日 午前８時５０分
