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Wi232/WiUSB User Guide
Modem Mode Messages
Full Verbose
OK
Command was executed without error.
CONNECT
A network connection has been established.
NO CARRIER
(Disconnect)
A network connection has been closed.
RING n.n.n.n.
A remote device, having IP address n.n.n.n, is connecting to this
device.
1-Character Response
0
OK
1
Connected
2
Ring
3
No Carrier
4
Error
Received commands must begin with the two-character sequence
AT
and be terminated with a carriage return
character.
The unit ignores any character sequence received
not
starting with AT, and only recognizes and processes
single AT-style commands. The unit treats compound AT commands as unrecognized commands.
If the Full Verbose option is in effect, the unit responds to an unrecognized command string that is
otherwise formatted correctly (begins with AT and ends with carriage return) with the
OK
message and takes
no further action.
If the 1-Character Response option is in effect, the unit responds to an unrecognized command string that is
otherwise formatted correctly with
OK
and takes no further action.
When an active connection is in effect, the unit transfers data and does not process commands received from
the serial interface.
When a connection is terminated or lost, the unit reverts to command mode.
When an active connection is in effect, the unit terminates the connection if it receives the following sequence
from the attached serial device:
No serial data is received for one second.
The character se++ is received, with no more than one second between each two
characters.
No serial data is received for one second after the last + character. At this time, the unit responds
affirmatively per the selected echo/response mode.
The character string
ATH
is received, terminated with a carriage return. The unit responds
affirmatively according to the selected echo/response mode and drops the network connection. The
serial interface reverts to accepting command strings.
If this sequence is not followed, the unit remains in data transfer mode.
