Xylem iCE3 GPRS Variant - Manual (Page 15)

GPRS iCE 3 , V1.30 User Guide
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6.1.4 Terminal ASCII Setup
As the iCE
3
echoes any received characters once it is in command mode, you will need to disable the “Echo
typed characters locally” mode, otherwise the characters you type in at the terminal doubled up.
6.2 Switching between Data and Command Modes
To view or change the configuration of the iCE
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from the RS232 host port, it is first necessary to switch it to
command mode if the device is in data (on-line transparent) mode. Conversely, the unit can be reconnected
to the network and put back into data mode following a configuration session by issuing an AT^IGOL (Go On
Line) command. (See Section 6.3.7).
To go from data mode to command mode: Type in three + characters in rapid succession. The iCE
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will
respond with an OK followed by a disconnection message.
To go from command mode back to on-line data mode: Type in AT^IGOL, then [Enter]. The unit will go
through its connection sequence and switch to data mode.
NOTE: If auto-connect is not enabled (AT^IACE=0 or 2), the unit will remain in command mode after being
powered up. If the iCE
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has been configured to automatically connect to the GPRS network (AT^IACE=1), it
will connect and go straight to data mode following a power up. If configured for scheduled mode,
(AT^IACE=2), then the connection will be initiated based on the settings entered via the AT^IACS command.
6.3 Special AT Commands
When in command mode, the iCE
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supports the entire standard AT command set accepted by the basic
Wavecom® M1206/M1306 GSM/GPRS modem. To provide a means of viewing and configuring the
customised features of the iCE
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, an additional set of special AT commands has been built into the iCE
3
application software. In order to avoid the common AT prefixes such as AT+ and AT&, all the special
commands begin with ^I, followed by three additional characters which describe the command.
NOTE: Whenever a change to a parameter is made, the new setting is stored in non-volatile memory and
takes effect immediately. This may cause an apparent loss of communication if the host (RS232) port speed
is changed using the AT^IHPS setting. In this case, the terminal program will need to be reconfigured to
resume the session.
The following sub-sections describe the special AT commands and these are listed in alphabetical order.