Murata Electronics North America 2492 Manual Do Utilizador
WIT2492
2000- 2007 Cirronet
22
M-2492-0000 Rev G1
5. MODEM COMMANDS
The WIT2492 is configured and controlled through a series of commands. These
commands are sent to the modem directly when the modem is in Control Mode when the
modem is in Data Mode if the escape sequence is enabled. The command syntax is the
same for either method, a one- or two-letter command followed by one or more
parameters. The modem will respond with a two-byte message that indicates the new
modem parameter value. The commands are loosely grouped into five different
categories: Serial commands, Network commands, Protocol commands, Status
commands and Memory commands. Each command is described in detail below. In the
descriptions, brackets ([,]) are used to denote a set of optional arguments. Vertical
slashes (|) separate selections. For example, given the string
commands are sent to the modem directly when the modem is in Control Mode when the
modem is in Data Mode if the escape sequence is enabled. The command syntax is the
same for either method, a one- or two-letter command followed by one or more
parameters. The modem will respond with a two-byte message that indicates the new
modem parameter value. The commands are loosely grouped into five different
categories: Serial commands, Network commands, Protocol commands, Status
commands and Memory commands. Each command is described in detail below. In the
descriptions, brackets ([,]) are used to denote a set of optional arguments. Vertical
slashes (|) separate selections. For example, given the string
wn[?|0..3f]
, some legal
commands are
wn?
,
wn0
,
wn3
and
wna
. Most commands which set a parameter also have
a
?
option which causes the modem to respond with the current parameter setting, e.g.,
wn?
Each modem command must be followed by either a carriage return or a line feed.
5.1. Serial Commands
These commands affect the serial interface between the modem and the host. The default
settings are 9600 bps and protocol mode 0.
settings are 9600 bps and protocol mode 0.
Command
Description
sd[?|00..FF]
Set Data Rate Divisor
Data Rate
Divisor (hex)
1200 bps = BF
2400 bps = 5F
9600 bps = 17
2400 bps = 5F
9600 bps = 17
14400 bps =
0F
19200 bps =
0B
28800 bps =
07
38400 bps =
05
57600 bps =
03
115200 bps =
01
230400 bps = 00
sp[?|00..14]
Set Protocol Mode
00
= point-to-point transparent mode
01
= basic command and data only
02
= command, data and connection notification
04
= WIT2400 protocol mode
05
– 08 = reserved for future use
09
= mode 01 during transmit, transparent receive
0A
= mode 02 during transmit, transparent receive
0C
= mode 04 during transmit, transparent receive
0D
– 10 = reserved for future use
11
= transparent transmit, mode 01 during receive
12
= transparent transmit, mode 02 during receive
14
= transparent transmit, mode 04 during receive