Epson LQ-1010, User Manual

Page: 236 / 308

Interface Specifications
Your printer is equipped with an S-bit parallel interface. For
specifications on optional interfaces, refer to their manuals.
Pin Assignments for the Parallel Interface
Connector pin assignments and a description of their respective
interface signals are shown in the following table.
Signal Return
Pin Pin
Signal Direction Description
1
19 STROBE IN
STROBE pulse to read data. Pulse width
must be more than 0.5 microseconds at
the receiving terminal.
2
20 DATA 1
IN These signals represent information of the
3 21 DATA 2 IN 1st to 8th bits of parallel data,
4
22 DATA 3
IN respectively. Each signal is at HIGH level
5 23 DATA 4 IN
when data is logical 1 and LOW when it is
6
24
DATA 5
IN logical 0.
7
25 DATA 6
IN
8 26 DATA 7
IN
9 27 DATA 8 IN
10 28 ACKNLG OUT
About an 11-microsecond pulse. LOW
indicates that data has been received and
that the printer
IS
ready to accept more
data.
11 29 BUSY OUT
A HIGH signal indicates that the printer
cannot receive data. The signal goes
HIGH in the following cases:
1) During data entry (ea. char. time)
2) During printing
3) When off line
12 30 PE
4) During printer-error state
OUT
A HIGH signal indicates that the printer is
out of paper.
8-8
Technical Specifications