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TC45 AT Command Set
4.7 AT+IPR
s
m
obile
TC45_ATC_V02.02
Page 98 of 461
4/16/04
Confidential / Released
Parameter Description
bit rate per second (bps)
0
(D)
Activates autobauding. Not supported on ASC1. Not usable with Java. See
chapter
for further details.
300
600
1200
2400
4800
9600
14400
19200
28800
38400
57600
115200
230400
Notes
• The factory default is autobauding enabled (
=0) on ASC0 and 57600bps on ASC1. It will not be
.
• The current setting of
will be preserved when you download firmware (i.e. a firmware update does
not restore the factory setting) or in the event of power failure.
should be used as a standalone command. If nethertheless combinations with other com-
mands on the same command line cannot be avoided, there are several constraints to be considered:
- Avoid combinations with the AT commands listed in chapter
- Take into account, that a delay of 100ms is required between the response to the last command (e.g. OK)
and the next command on the same line.
=0, autobauding will be activated after the response to the last command is
received.
- When local echo is active (
1) and you enter
=x with other commands you may encounter the
following problem: if switching to the new bit rate takes effect while a response is being transmitted, the
last bytes may be sent with the new bit rate and thus, not properly transmitted. The following commands
will be correctly sent at the new bit rate.
• In order to account for greater amounts of data it is recommended to choose a minimum bit rate of 2400 bps.
If the ME is operated in Multiplex mode we suggest a minimum bit rate of 4800bps.
• A selected bit rate takes effect after the write commands returns OK (except for Multiplex mode).
• In Multiplex mode, the write command
=
will not change the bit rate currently used, but the
new bit rate will be stored and becomes active, when the module is restarted.
• If Java is running, the firmware will ignore any settings made with
. Responses to the read, write or
test command will be invalid or deliver "ERROR". See also "TC45 Java User's Guide"
, chapter "Configur-
ing serial interface".
<rate>
(num)(&V)