Epson LQ-1060, Technical Manual

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Table 1-13. 8-bit Parallel l/F Connector Pin Assignments
Pin No.
Signal Return
Description
1 STROBE 19 I Strobe pulse to read the input data. Pulse width must
be more than 0.5 input data is latched after
falling edge of this signal.
2 20 I Parallel input data to the printer.
3 21 I “HIGH” level means data “1”.
4
22 “LOW” level means data “O”.
5 23
6 24 I
7 25
8 26 I
9 27 I
10 ACKNLG 28 0 This pulse indicates data are received and the
printer is ready to accept next data. Pulse width is
approx. 11
11
BUSY
29
0
“HIGH” indicates printer can not accept data.
12 PE 30 0 “HIGH’ ’indicates paper-out.
This signal is effective only when ERROR signal is
“LOW”.
13 SLCT
—
o Always “HIGH”. (Pulled up to through 3.3 K
ohms resistor.)
AUTOFEED-XT – If this signal is “LOW” when the printer is initialized,
a line feed is automatically performed by input of
“CR” code (Auto
15
NC
— —
Not
16
—
—
Ground for twisted-pair.
17
Chassis
—
— Printer chassis ground.
18 NC
—
—
Not used.
19 to 30
— —
Ground for twisted-pair.
31 INIT 16 Pulse (width : 50 min., active “LOW”) input for
printer initialization.
32
ERROR
.
0 “LOW indicates that some error has occurred in the
printer.
33
— .
Ground for twisted-pair.
34 NC
— —
Not
35
—
o
Always “HIGH”. (Pulled up to through 3.3 K
ohms resistor.)
36 SLECT-IN
—
I If the signal is “LOW” when printer is initialized, the
control is disabled.
NOTES :
“Direction” of signal flow is as viewed from the printer.
2. “Return” denotes “TWISTED PAIR RETURN” and is to be connected at signal ground level.
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