Star Micronics TUP452-24, TUP482-24 operation manual Serial Interface RS-232C or RS-422A

Item

Specification

Data transfer method

Asynchronous serial interface

Data transfer rate

2400, 4800, 9600, 19200

Start bit: 1

Data bit: 7 or 8

Odd, even or no parity

Stop bit: 1

Signal polarity

Mark = logic “1” (–3 V to –15 V)

Space = logic “0” (+3 V to +15V)

Pin No.

Signal Name

IN/OUT

Function

1

F-GND

—

Frame ground

2

TXD

OUT

Transmit data

3

RXD

IN

Receive data

4

RTS

OUT

Send request signal. There is a space when the printer is

ready to receive.

5

CTS

IN

There is a space when the host computer is ready to send.

However, this signal is not checked by the printer.

6

N/C

Not used

7

S-GND

Signal ground

8 ~ 10

N/C

Not used

11

RCH

OUT

There is a space when the printer is ready to receive.

Same as pin 20.

12

N/C

Not used

13

S-GND

Signal ground

14

FAULT

OUT

There is a mark when an error is occurring in the printer.

15

Multi-TXD

OUT

Send data for multi printer

16

Multi-DTX

IN

Receive data for multi printer

17 ~ 19

N/C

Not used

20

DTR

Data terminal ready signal. There is a space when the

printer is ready to receive.

21 ~ 25

N/C

Not used