Integration Guide

WIT2410

5. MODEM COMMANDS

The WIT2410 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 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.

Command

Description

sd[?|00..FF]

Set Data Rate Divisor

Data Rate Divisor (hex)

1200 bps = BF

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