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SARA-R4 series-AT commands manual
UBX-17003787 - R16
1AT command settings
Page 13 of 401
Parameter types:
o Number: positive and negative counting numbers, as well as zero {..., -2, -1, 0, 1, 2,...}.
o String: sequence of characters enclosed within quotation marks (" ").
• <S3_character>: command line termination character; the factory-programmed termination character is
<CR>
The maximum length of the command line is the maximum number of characters which can be accepted
on a single command line (including the command line termination character).
SARA-R4 / SARA-N4
The command line is not case sensitive unless autobauding is enabled; in this case the prefix "AT" must
be typed either as "AT" or "at"; other combinations ("aT" or "Ta") are not allowed.
When writing or sending an SMS, Ctrl-Z or ESC terminates the command; <CR> is used between the two
parts of the SMS (address and text).
The serial interface driver generally does not allow a new command until the previous one has been terminated
by "OK" final result code or by an error result code. In specific cases (see the abortability attribute), the
command execution may be aborted if a character is sent to DCE before the command has ended.
1.1.4.1Concatenation of AT commands
More than one AT command can be entered on the same command line. The "AT" prefix must be provided only
at the beginning of the command line. Each command must be separated by using a semicolon as delimiter
only if the command has a "+" character as prefix.
Example: ATI;+CGATT?;+COPS?<CR>
If a command in the command line causes an error, or is not recognized as a valid command, then the execution
is terminated, the remaining commands in the command line are ignored and an error result code is returned.
If all the commands are correctly executed, only the "OK" final result code of the last command is returned.
SARA-R4 / SARA-N4
Not all the commands can be entered with other commands on the same command line: +CMGW, +CMGS,
+USOWR, +USOST, +UDWNFILE must be used by themselves.
1.1.5Notes
SARA-R410M-02B / SARA-R410M-52B / SARA-R410M-63B / SARA-R410M-73B / SARA-R410M-83B
• The maximum length of the command line is 2600 characters.
• String parameter type limitations - The following characters are not allowed in the parameter string:
o 0x00 (NUL)
o 0x0D (CR)
o 0x15 (NAK)
o 0x22 (")
o 0x2C (,)
SARA-R410M-02B / SARA-R410M-52B / SARA-R412M
On SARA-R410M-02B-00, SARA-R410M-02B-01, SARA-R410M-52B-00, SARA-R410M-52B-01,
SARA-R412M-02B-00, SARA-R412M-02B-01 the maximum length of the command line is 1024
characters.
SARA-R404M / SARA-R410M-01B / SARA-N4
• The maximum length of the command line is 1024 characters.
• String parameter type limitations - The following characters are not allowed in the parameter string:
o 0x00 (NUL)
o 0x0D (CR)
o 0x15 (NAK)
o 0x22 (")
o 0x2C (,)