Epson 1400 Verweishandbuch
Interface
The parallel
interface connector
pin assignments and a description of the
interface signals are shown in the table below.
Signal
Pin
1
2
3
4
5
6
7
8
9
9
Return
Pin
19
Direction
IN
IN
IN
IN
IN
IN
IN
IN
IN
Description
STROBE pulse to read data.
Pulse width must be at least
0.5
µs at the receiving
terminal.
Signal
STROBE
20
DATA 1
21
DATA 2
22
DATA 3
23
DATA 4
24
DATA 5
26
DATA 6
26
DATA 7
27
DATA 8
These signals represent
parallel data bits 1 to 8.
respectively. Each signal is at
HIGH level when data is
logical 1 and LOW when it is
logical 0.
ACKNLG
28
10
OUT
OUT
OUT
About a 1-10-µs pulse width.
LOW indicates data has
been received and the
printer is ready to accept
mare data.
A HIGH signal indicates that
A HIGH signal indicates that
the printer cannot receive
data. The signal goes HIGH in
the following cases:
1. During printing
2.
During a
printer-error state
BUSY
PE
SLCT
AUTO
FEED
NC
29
30
11
12
13
14
15
A HIGH signal indicates the
printer is out of paper.
Pulled up to +5V through
3.3 K resistance.
OUT
IN
Not used
Natured
16
Logic ground level
GND
CHASSIS
GND
17
Printer’s chassis ground,
which is connected to the
signal ground.
18
NC
Not used
A-6 Technical Specifications