Epson ActionLaser, User Manual

Page: 217 / 239

Interface Specifications
The laser printer has the following resident interfaces:
l
Parallel
l
RS-232C/RS-422A serial.
Parallel interface
Your printer is equipped with an 8-bit parallel interface.
Pin assignments for the parallel 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
10
11
12
Return
Pin
19
20 DATA 1
21 DATA 2
22 DATA 3
23
DATA 4
24 DATA 5
25 DATA 6
26 DATA 7
27 DATA 8
28
29
-
Signal
DATA
STROBE
ACK
BUSY
PE
Direction
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
Description
Signal to read data in.
These signals represent
information of the 1st to
8th bits of parallel data
respectively. Each signal
is at HIGH level when data
is logical 1 and LOW when
it is logical 0.
Acknowledge receiving data.
A HIGH signal indicates that
the printer cannot receive
data.
A HIGH signal indicates that
the printer is out of paper.
Technical Specifications B-7