Epson Stylus Pro [549/573] Parallel interface

Epson Stylus 1500 [549/573] Parallel interface
Parallel Interface A-31
Parallel Interface
EPSON printers feature an industry standard Centronics Parallel type interface. The printer
side of this interface utilizes a 36 Pin connector. The pin assignments for this connector are
as follows:
Pins and signals
Signal Pin Return 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
3
4
5
6
7
8
9
20
21
22
23
24
25
26
27
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
IN
IN
IN
IN
IN
IN
IN
IN
These signals represent information of bits
1 to 8 of parallel data, respectively. Each
signal is at HIGH level when data is logical
1 and LOW when it is logical 0.
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 a printer-error
12 30 PE OUT A HIGH signal indicates that the printer is
out of paper.
13 SLCT OUT Always at high level when the printer is on.
14
AUTO
FEED XT
IN When this signal is LOW, the paper is
automatically fed 1 line after printing. (The
signal level can be fixed to LOW by setting
the DIP switch or SelecType. See the user’s
guide of each printer.)

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