Data Communication and Host Modes
RLXIC-SG
♦
Intelligent Cellular
User Manual
RadioLinx Intelligent Cellular Serial Modem for Global GPRS/GSM
ProSoft Technology, Inc.
Page 53 of 136
May 29, 2009
If the serial port of the RLXIC-SG is in any mode other than AT or PassThru,
the AT command mode can be re-entered by:
Deactivating DTR (if &D2 or Ignore DTR, S211, is not set).
Issuing the +++ escape sequence (if Disable AT Escape, DAE, is not set).
Resetting or Power cycling the modem.
Note:
DTR needs to be asserted (S211=1 or &D0) by the host before PPP Mode, SLIP Mode, UDP
PAD Mode, or TCP PAD Mode can be entered.
7.2.2 AT
Mode
Using a terminal connection, AT commands are used to configure the modem,
command it to do something, or query a setting. For a full listing of the AT
commands, refer to the appendix. AceManager is a graphical user interface for
most AT Commands.
AT commands must always be terminated by
<CR>
(ASCII character 0x0D),
a carriage return (pressing enter on the keyboard). Some may also include a
new line or line feed
<LF>
.
If
E=1
(Echo On), the AT command (including the terminating <carriage
return) will be displayed (output) before any responses.
Two settings affect the format of AT command output:
V
(Verbose), and
Q
(Quiet).
If
Q=1
(Quiet On), no result codes are output whatsoever, so there is no
response generated by a (non query) command.
If
Q=0
(Quiet Off), result codes are output. The format of this output is then
affected by the Verbose setting.
If Quiet mode is off, the result code is affected as follows:
For
V=1
(Verbose mode), the textual result code is surrounded by a carriage
return and new line. Any AT query response is also surrounded by a carriage
return and new line.
For
V=0
(Terse mode), a numeric result code is output with a single trailing
carriage return (no new line is output), while any AT query response is followed
by a carriage return and new line (there is no preceding output).
For example, possible output to the AT command "AT" with carriage return
(assuming quiet mode is not on) is:
carriage return - if V=0
carriage return and new line OK another carriage return and new line - if V=1
Note:
These commands work for the port on which they are executed. For example, if the user
types ATE1, and then AT&W using a serial port connection, it will set the serial port to Echo On.
Summary of Contents for RLXIC-SG
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