Epson ActionNote 880C User Manual - Fax/Data Modem - Page 20

indicate it has performed the requested function.

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&Dn DTR Option This command controls how the modem responds to DTR, After toggling DTR, the host should wait 200 ms before modifying the UART registers or sending a new command to the modem as the modem does not send an 'OK' message to indicate it has performed the requested function. &D0 &D1 &D2 &D3 Note : In asynchronous mode (&Q0), the modem ignores DTR. The modem switches from data mode to command mode when an on-to-off transition of DTR occurs. An on-to-off transition of DTR causes the modem to go on-hook (hang-up) and disable auto-answer mode. Auto-answer mode (S0 is not equal to zero) is enabled when DTR is turned on. (default) An on-to-off transition of DTR re-initializes the modem. The re-initialize procedure performs a power-up reset, except that the UART registers are not re-configured, The modem will not respond to a DTR toggle in sleep or power down mode (see S-register S30) It is recommended that a character be sent to wake up the modem prior to toggling DTR. &F Fetch Factory Configuration This command loads command and S-register factory defaults into the active configuration, and configures the modem for data mode. 12 COMMAND REFERENCE - 2

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&Dn
DTR Option
This command controls how the modem responds to DTR, After toggling DTR,
the host should wait 200 ms before modifying the UART registers or sending a
new command to the modem as the modem does not send an ‘OK’ message to
indicate it has performed the requested function.
&D3
Note :
&D0
In asynchronous mode (&Q0), the modem
ignores DTR.
&D1
The modem switches from data mode to
command mode when an on-to-off transition
of DTR occurs.
&D2
An on-to-off transition of DTR causes the
modem to go on-hook (hang-up) and disable
auto-answer mode. Auto-answer mode (S0
is not equal to zero) is enabled when DTR is
turned on. (default)
An on-to-off transition of DTR re-initializes
the modem. The re-initialize procedure
performs a power-up reset, except that the
UART registers are not re-configured,
The modem will not respond to a DTR toggle
in sleep or power down mode (see S-register
S30) It is recommended that a character be
sent to wake up the modem prior to toggling
DTR.
&F
Fetch Factory Configuration
This
command loads command and S-register factory defaults into the active configura-
tion, and configures the modem for data mode.
12
COMMAND REFERENCE - 2