Appendix A: Serial Interface

Appendix A: Serial Interface

A-1. Connectors and Signals

RS-232C

 

 

Pin no.

Signal name

I/O direction

 

Function

 

 

 

 

 

 

 

 

 

 

 

1

 

F-GND

 

Frame ground

 

 

 

 

 

 

 

 

 

 

 

2

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

3

 

RXD

IN

 

Received data

 

 

 

 

 

 

 

 

 

 

 

4

 

RTS

OUT

 

Data transmission request signal. This is always

 

 

 

 

 

 

 

 

“SPACE” when the printer is turned on. (Always

 

 

 

 

 

 

 

 

“SPACE” status)

 

 

 

 

 

 

 

 

 

 

 

5-6

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

7

 

S-GND

 

Signal ground

 

 

 

 

 

 

 

 

 

 

 

8-10

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

11

 

RCH

OUT

 

When the printer is ready to receive data, the signal line

 

 

 

 

 

 

 

 

is same as pin 20.

 

 

 

 

 

 

 

 

 

 

 

12

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

13

 

GND

 

Signal ground

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

OUT

 

When printer error occurs (such as paper out, mechani-

 

 

 

FAULT

 

 

 

 

 

 

 

 

 

cal error, etc.) this signal changes to “MARK”.

APPENDIX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15-19

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

DTR

OUT

 

Data terminal ready signal. When the printer is ready to

 

 

 

 

 

 

 

 

receive data, this signal changes to “SPACE”.

 

 

 

 

 

 

 

 

 

 

 

21-25

 

N/C

 

 

Not connected

 

 

 

 

 

 

 

 

 

 

 

 

14

 

25

 

 

 

1

 

13

Fig. A-1 Serial interface connector

– 87 –

Page 90
Image 90
Star Micronics SP200F user manual Appendix A Serial Interface, A-1. Connectors and Signals, RS-232C