Microhard Systems MHX-900, Руководство по эксплуатации

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MHX-900 Operating Manual: Chapter 3 Configuration Options
7
3. Configuration Options
Refer to Appendix A (page
19) for a summary of the
modem commands
Configuration options are
not stored in non-volatile
memory until the WRITE
command (&W) is executed
3.0 Command Line Interface
The MHX-900 modem module is easily configured to meet a wide range of
needs and applications. You can have your modem perform a variety of
functions by sending it instructions (in the form of commands). Sending a
command overrides the modem’s operating characteristics.
Your modem must be in Command Mode for it to execute a command. If
you send characters when the modem is in Data Mode, the modem sends the
characters across the Wireless Link.
When the modem is initially powered up, the interface will operate in
command mode.
You can place the modem into Data Mode either by
1. Dialing a remote modem
2. Issuing the answer command
3. Issuing the online command
You can place the modem into Command Mode either by
1. Sending the escape sequence
2. Toggling the DTR line,
Note: When the connection is lost to the remote modem, the modem will
switch to command mode.
To enter a command line and have your modem execute it, use the following
procedure:
1. With your modem in the Command Mode, type AT. These characters,
known as the attention characters, must be typed at the beginning or
each command line.
2. Type the command(s) in upper-case letters. Include any parameters
required by the command. To make the command line more readable,
you can insert as many spaces as desired. The command line holds up
to 40 characters, not including the AT prefix.
3. Press the ENTER key. Your modem executes the command line and
sends you a word response (usually OK).
For example, to set the Operating Mode S101 register to Master point to
point mode, enter the following command line; AT S101 = 1 <return>.
To display what a register is currently set to, enter the following command
line; AT Sxxx? <return>. The modem will output the value of the register.