Sierra Wireless MP 700 Series, Справочник по командам

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MP 700 Series GPS AT Command Reference
Note: When concatenated
together, AT commands may not
function predictably. It is best to
avoid concatenating commands
without first testing and verifying
the results.
Specific settings for buffer controls are described in the
relevant commands and registers. Normal configuration of the
modem will not require you to adjust these settings.
Data flow control The modem’s CTS and RTS lines control
data flow. Where large amounts of data are being exchanged,
local hardware flow control must be used to prevent buffer
overflows; it is required for PPP connections. Hardware flow
control is enabled by default. (See the
+IPR
command on
page 98).
Command Handling
AT
can be issued as a command without parameters. It acts like
a “ping” to the modem and always gives a result code of
OK
(unless quiet mode is enabled).
Commands are not case-sensitive; they may be entered in
upper or lower case, or a combination. Arguments to
commands may be case-sensitive.
Concatenation
More than one command can be included in a single line,
although some commands or their parameters must be placed
at the end of the line. When concatenating commands, a space
between basic commands is optional. Where extended
commands (those beginning with a non-alphabetic character
after the
AT
) are concatenated, they must be separated by a
semicolon (
;
).
Commands are executed in the order entered. If a command
results in the
ERROR
result code the balance of the command
line is ignored. Only one result code is returned for the entire
command line. The complete concatenated command string
must not exceed the 200-character command buffer limit. (See
page 17).
Parameters
Most AT commands support one or more parameters, usually
a number. Allowed values are specified in this reference.
Commands that normally accept a single numeric option
switch (
[<n>]
) and are issued without that parameter will
assume a value of zero (
0
).
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