Interface Specifications

Signal Return

Pin Pin

11 29

1230

13-

14-

15-

16

17-

18-

19-30

31-

32-

33-

34

Signal

Direction

Description

BUSY

OUT

A HIGH signal indicates that the printer

 

 

cannot receive data. The signal goes

 

 

HIGH in the following cases:

 

 

• During data entry (each char. time)

 

 

• When off line

 

 

• During printer-error state

PE

OUT

A HIGH signal indicates that the printer is

 

 

out of paper.

SLCTOUT

OUT

Pulled up to 5 volts through 3.3K ohm

 

 

resistance.

AUTO

IN

When LOW, the paper is automatically

FEED

 

fed one line after printing. (The signal

 

 

level can be fixed using SelecType.)

 

 

Sampling is carried out when the power

 

 

is on or the printer is initialized with the

 

 

control panel button.

NC

 

 

 

 

GND

-

Logic ground level.

CHASSIS

-

Printer’s chassis ground, which is

GND

 

isolated from the logic ground.

NC

-

Not used.

GND

 

Twisted-pair return signal ground level.

INIT

IN

When this signal goes LOW, the printer

 

 

 

 

 

controller ignores the

STROBE

signal.

ERROR

OUT

This level becomes LOW when the printer

 

 

is

 

 

• in paper-out state

 

 

• in error state

 

 

• off line

GND

 

Same as for Pins 19-30.

NC

-

Not used.

 

 

 

 

 

8-10 Technical Specifications