User Manual

MHX-920 Operating Manual: Chapter 4 Configuration 21

Refer to Appendix A (page

45) for a summary of the

S-Registers.

S Registers 2 through 5

cannot be stored to non-

volatile memory.

4.3 S Registers

The S Registers described in this section affect the operating characteristics

of the modem.

S Register 0 - Auto Answer

If this register is set to zero, the modem will power up in command mode. If

this register is set to one, the modem will power up in data mode.

S Register 2 - Escape Code

This register contains the ASCII value of the escape character.

The default value (decimal 43) is equivalent to the ASCII character ‘+’.

Values greater than 127 disable the escape feature and prevent you from

returning to the Command Mode. This register cannot be stored to non-

volatile memory. If the modem is reset, or powered down, the default value

is restored.

Default is ‘+’ (decimal 43).

S Register 3 - CR Control Code

This register contains the ASCII value of the carriage return character.

This is the character that is used to end the command line and is also the

character that appears after the modem sends a response. This register cannot

be stored to non-volatile memory. If the modem is reset, or powered down,

the default value is restored.

Default is ‘CR’ (decimal 13).

S Register 4 - Linefeed Control Code

The modem sends the linefeed character after sending a carriage return

character when sending text responses. This register cannot be stored to non-

volatile memory. If the modem is reset, or powered down, the default value

is restored.

Default is ‘LF’ (decimal 10).

S Register 5 - Backspace Control Code

This character is both the character created by entering BACKSPACE and

the character echoed to move the cursor to the left. This register cannot be

stored to non-volatile memory. If the modem is reset, or powered down, the

default value is restored.

Default is ‘BS’ (decimal 8).