Signal

Return

Signal

Direction

Description

 

Pin

Pin

 

 

 

 

 

 

 

 

 

11

29

BUSY

OUT

A HIGH signal indicates the

 

 

 

 

printer cannot receive data.

 

 

 

 

The signal goes HIGH in the

 

 

 

 

following cases:

 

 

 

 

 

1) During data entry (for each

 

 

 

 

character)

 

 

 

 

 

2) During printing

 

 

 

 

 

3) When the PAUSE button is

 

 

 

 

pressed

 

 

 

 

 

4) During an error state

 

 

 

 

 

12

30

PE

OUT

A HIGH signal indicates that the

 

 

 

 

printer is out of paper,

 

 

 

 

 

13

 

SLCT

OUT

Pulled up to 5 V through 3.3

 

 

 

 

resistance

 

 

 

 

 

 

14

 

AUTO

IN

When this signal is LOW, the

 

 

FEED

 

paper is automatically fed one

 

 

XT

 

line after printing, (The signal

 

 

 

 

level can be fixed to LOW by

 

 

 

 

setting DIP switch 2-4 to on.)

 

 

 

 

 

 

15

 

NC

 

Not used

 

 

 

 

 

 

16

 

GND

-

Logic ground level

 

 

 

 

 

17

-

CHASSIS

-

Printer’s chassis ground, which is

 

 

GND

 

isolated from the logic ground

 

 

 

 

 

 

18

-

NC

 

Not used

 

 

 

 

 

 

19-30

-

GND

-

Twisted-pair return signal ground

 

 

 

 

level

 

 

 

 

 

 

31

16

INIT

IN

When this level becomes LOW,

 

 

 

 

the printer controller is reset to

 

 

 

 

its state when the power is first

 

 

 

 

turned an and the print buffer is

 

 

 

 

cleared, This level is normally

 

 

 

 

HIGH; its pulse width must be

 

 

 

 

more than 50

at the receiving

 

 

 

 

terminal.

 

 

 

 

 

 

 

7-12Technical Specifications