Star Micronics NX-15 user manual TTnllsed1

Models: NX-15

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Table G-1

Serial interface pirf functions

Pio No.

~i::;l

Direction

Function

 

1

GND

Printer’s chassis ground.

2

TXD

OUT

This pin carries data from the printer.

3

RXD

IN

This pin carries data to the printer.

4

RTS

OUT

This is ON when the printer is ready to

 

 

 

receive data.

5

CTS

IN

This pin is ON when the computer is

 

 

 

ready to send data.

6

DSR

IN

This pin is ON when the computer is

 

 

 

ready to send data. This printer does not

 

 

 

check this pin.

7

GND

Signal ground.

8

DCD

IN

This pin is ON when the computer is

 

 

 

ready to send data. This printer does not

 

 

 

check this pin.

9

TTYTXI)R

This pin is the return path for data

 

 

 

transmitted from the printer on the 20mA

10

 

 

current loop.

TTY TXD

OUT

This pin carries data from the printer on

 

 

 

the 20mA current loop.

11

RCH

OUT

This is the signal line for the serial busy

 

 

 

protocols. This pin goes OFF when

printer’s buffer fills, and ON when the printer is ready to receive data. In the busy protocols this line carries the same signal as pin 20.

12N/C

13GND – 14-16 N/C

17‘lTYTXDR –

I I I

18TTY RXDR –

19TTY RXD IN

20DTR o’IUT

21-22 N/C

23 TTY RXDR –

II

24 TTY TXD OUT

t,

25 TTY RXD IN

Unused. Signal ground. Unused.

This pin is the return path for data transmitted from the printer on the 20mA Icurrent loop.

This pin is the return path for data transmitted to the printer on the 20mA current loop.

This pin carries data to the printer on the 20mA current loop.

ready to receive data.

The--------printer turns this pm ON when it is.

rThis pin is the return path for data transmitted to the printer on the 20mA current loop.

TTnllsed1

This pin carries data from the printer on the 20mA current looD.

This in carries data to the printer on the 20m1“ current loop.

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Star Micronics NX-15 user manual TTnllsed1