Microhard Systems MHX-2400, Operating Manual

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8
MHX-2400 Operating Manual: Chapter 3 Configuration Options
3. Configuration Options
The escape sequence will not
be accepted unless both the
MHX-2400 and the terminal
are set to the same baud rate
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-2400 modem can be 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 transmits
the characters over the air.
Depending on its settings, the modem will either power up in Command
Mode or Data Mode. Normally, when first received from the factory, the
unit will power up in Command Mode.
You can place the modem into Data Mode either by
1. Issuing the answer command
2. Issuing the online command
You can place the modem into Command Mode either by
1. Sending the escape sequence
2. Toggling the DTR line (depending on the &D parameter see pg 11).
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 of
each command line.
2. Type the command(s). 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 16 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-
Multipoint 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.