Appendix C: Serial interface

C-1. Connectors and Signal Names (Serial Interface)

Pin No.

Signal name

Direction

Function

 

 

1

F-GND

Frame ground

 

 

2

TXD

OUT

Outgoing data

 

 

3

RXD

IN

Incoming data

 

 

4

RTS

OUT

Request To Send: The printer sets this signal

 

 

 

 

 

on “SPACE” when it is ready to send.

 

 

5

CTS

IN

The host sets this signal on “SPACE” when it

 

 

 

 

 

is ready to send. NOTE: The printer does not

 

 

 

 

 

monitor this signal.

 

 

6

N/C

 

Not used

 

 

7

S-GND

Signal ground

 

 

8 ~ 10

N/C

 

Not used

 

 

11

RCH

OUT

The printer sets this signal on “SPACE” when

 

 

 

 

 

it is ready to receive. This pin outputs the same

 

 

 

 

 

signal as pin 20, to which it is connected.

 

 

12

N/C

 

Not used

 

 

13

S-GND

Signal ground.

 

 

APPENDIX

15 ~ 19

N/C

OUT

Not used

 

14

FAULT

The printer sets this signal on “MARK” to

 

 

 

 

 

indicate an error condition (machine error, no

 

 

 

 

 

paper, etc.).

 

 

 

 

 

 

 

 

20

DTR

OUT

Data Terminal Ready: The printer sets this

 

 

 

 

 

signal on “SPACE” when it is ready to receive.

 

 

 

 

 

(1) DTR/DSR mode

 

 

 

 

 

Space when receiveis enable.

 

 

 

 

 

(2) X-On/X-Off mode

 

 

 

 

 

Always space except during following

 

 

 

 

 

states

 

 

 

 

 

• Period between reset and communica-

 

 

 

 

 

tion enable

 

 

 

 

 

• During self printing

 

 

21 ~ 25

N/C

 

Not used

 

 

 

 

 

 

 

 

 

13

 

1

 

 

 

25

 

14

 

 

– 70 –

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Star Micronics TSP400Z Series Appendix C Serial interface, Connectors and Signal Names Serial Interface, Function

TSP400Z Series specifications

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