Table 1-12. Printer Select/Deselect Control - Epson LX-810 Technical Manual

T a b l e 1 - 1 2 s h o w s P r i n t e r S e l e c t / D e s e l e c t (DC l/DC3) controL including relations amon9 ON-LINE, . .
SELECT-IN input, DC l/DC3 and interface signals.
ON-LINE SW
HIGH/LOW
OFF-LINE
ON-LINE HIGH
LOW
NOTES: 1. In Table 1-12, it is assumed that no ERROR status exists other than that attributable to the
OFF-LINE mode.
not revert to the selected state unless the DC 1 code is input again. (In the deselected state,
the printer ignores input data until the DC 1 code is received.)
3. The DC 1 and DC3 codes are enabled only when the SLCT-IN signal (Input Connector No.36
for the parallel interface unit) is HIGH and printer power is initialized.
4. if the SLCT-IN signal is LOW when the printer is initialized, DC1/DC3 printer select/de-
select control is invalidated, and these control codes are ignored.
5. If the SLCT-IN signal is HIGH and is not set to LOW by jumper 1 when the printer is
initialized, the printer starts from the selected (DC 1 ) state.

Table 1-12. Printer Select/Deselect Control

ERROR
DC l/DC3 LOW
DC 1 HIGH
HIGH
DC 1 HIGH
DC3 HIGH
1-14
BUSY ACKNLG
HIGH No pulse
Pulse output Enable(Normal
LOW/HIGH
(During data after entry
entry)
LOW/HIGH Pulse output
(During data after entry
entry)
Pulse output
LOW/HIGH
(During data after entry
entry)
LOW/HIGH Pulse output mal process)
after entry
(During data
entry)
DATA ENTRY
Disable
Process)
Enable (Waits
DC 1. See Note
2)
Enable (Nor-