Telit Wireless Solutions UC864-E, Reference Manual

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UC864 UC864 UC864 UC864----E/G/WD/WDU E/G/WD/WDU E/G/WD/WDU E/G/WD/WDU AT Commands Reference Guide AT Commands Reference Guide AT Commands Reference Guide AT Commands Reference Guide
80304ST10041a Rev. 6 80304ST10041a Rev. 6 80304ST10041a Rev. 6 80304ST10041a Rev. 6 ---- 2010 2010 2010 2010----0 00 05 55 5----20 20 20 20
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3.2. 3.2. 3.2. 3.2. AT Command Syntax AT Command Syntax AT Command Syntax AT Command Syntax
The syntax rules followed by Telit implementation of either Hayes AT commands and
GSM/WCDMA commands are very similar to those of standard basic and extended AT
commands.
There are two types of extended command:
-
Parameter type commands
Parameter type commands Parameter type commands
Parameter type commands. This type of commands may be “set” (to store a
value or values for later use), “read” (to determine the current value or values
stored), or “tested” (to determine ranges of values supported). Each of them has
a test command (trailing =?
=? =? =?) to give information about the type of its
subparameters; they also have a Read command (trailing ?
??
?) to check the current
values of subparameters.
-
Action type commands Action type commands Action type commands Action type commands. This type of command may be “executed” or “tested”.
•
“executed“ to invoke a particular function of the equipment, which generally
involves more than the simple storage of a value for later use
•
“tested” to determine:
whether or not the equipment implements the Action Command (in this case
issuing the correspondent Test command - trailing =?
=? =?
=? - returns the OK
OK OK
OK result
code), and, if subparameters are associated with the action, the ranges of
subparameters values that are supported.
Action commands don’t store the values of any of their possible subparameters.
Moreover:
The response to the Test Command (trailing =? =? =? =?) may be changed in the future by Telit
to allow the description of new values/functionalities
If all the subparameters of a parameter type cCMD
+CMD +CMD
+CMD (or #CMD
#CMD #CMD
#CMD or $CMD
$CMD $CMD
$CMD)
are optional, issuing AT+CMD=<CR> AT+CMD=<CR> AT+CMD=<CR> AT+CMD=<CR> (or AT#CMD=<CR> AT#CMD=<CR> AT#CMD=<CR> AT#CMD=<CR> or AT$CMD=<CR> AT$CMD=<CR> AT$CMD=<CR> AT$CMD=<CR>) causes
the OK
OK OK
OK result code to be returned and the previous values of the omitted
subparameters to be retained.