Murata Electronics North America 910M Manual Do Utilizador

 

The WIT910 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 

, some legal 

commands are 

, 

, 

 and 

.  Most commands which set a parameter also have 

a 

 option which causes the modem to respond with the current parameter setting, e.g., 

Each modem command must be followed by either a carriage return or a line feed. 

 

 
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[?|02..FF] 

Set Data Rate Divisor 
 

Data Rate    Divisor (hex) 

 2400 

bps 

= 

8F

 

 9600 

bps 

= 

23

 

 14400 

bps 

= 

17

 

 19200 

bps 

= 

11

 

 28800 

bps 

= 

B

 

 38400 

bps 

= 

8

 

 57600 

bps 

= 

5

 

 115200 

bps 

= 2 

 

 

sp[?|00..14] 

Set Protocol Mode 

 

00

  

=  point-to-point transparent mode 

 

01

  

=  basic command and data only 

 

02

  

=  command, data and connection notification 

 

03

 – 08   =  reserved for future use 

 

09

  

=  mode 01 during transmit, transparent receive 

 

0A

  

=  mode 02 during transmit, transparent receive 

 

0C

 – 10   =  reserved for future use 

 

11

  

=  transparent transmit, mode 01 during receive 

 

12

  

=  transparent transmit, mode 02 during receive 

 

Set Data Rate Divisor 
Sets the serial bit rate between the modem and the host.  This command takes effect 
immediately and will require adjusting the host serial rate to agree.  Nonstandard rates 
may be programmed by entering a data rate divisor computed with the following formula: 

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