Interface Specifications

Your printer is equipped with a parallel interface.

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

Signal

Direction

Description

Pin

Pin

 

 

 

 

 

 

 

 

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

3

21

DATA 2

IN

of the 1st to 8th bits of parallel data,

4

22

DATA 3

IN

respectively. Each signal is at HIGH

5

23

DATA 4

IN

level when data is logical 1 and

6

24

DATA 5

IN

LOW when it is 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

 

 

 

 

4) During printer-error state

 

 

 

 

 

12

30

PE

OUT

A HIGH signal indicates that the

 

 

 

 

printer is out of paper.

 

 

 

 

 

Technical Specifications 5-7