Interface Specifications

Your printer is equipped with an 8-bit parallel interface. For specifications on optional interfaces, refer to their manuals.

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

 

 

 

 

Pin

Pin

Signal

Direction

Description

 

 

 

 

 

 

 

 

 

I N

 

 

1

19

STROBE

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 of

3

21

DATA 2

IN

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 LOW

6

24

DATA 5

IN

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 8-9