Appendix

Interfaces

Serial Interface7 Specifications

Transmission method

Two way serial communication

Signal level

RS-232C

Baud rate

600/1,200/2,400/4,800/9,600/

 

19,200/38,400/57,600/11,500 bps

Data length

7 or 8 bit

Start bit

1 bit

Stop bit

1 bit, 2 bits

Parity

Even, odd, none

Connector

MD-S8100-10 (JST)

7Pin layout

No.

Name

I/O

 

Pin explanation

1

CTS

IN

XON/OFF:

not used

 

 

 

DTR/DSR:

not used

2

RTS

OUT

Pull up to + 10V through 3.3 kΩ

3

RXD

IN

Data beam from the host to the printer

4

SGND

–

GND of the signal line

5

TXD

OUT

XON/OFF : Data beam from printer to host

 

 

 

 

Transmits XON/XOFF

 

 

 

DTR/DSR :

Not used

6

DTR

OUT

XON/OFF :

Always High

 

 

 

DTR/DSR :

High when the printer can receive

 

 

 

 

Low when it cannot receive

7

IFSEL

 

Cable judgement when the optional RS232C cable is connected to

 

 

 

the printer

 

8

DSR

IN

XON/OFF : Not used

 

 

 

DTR/DSR :

High when the host can receive

 

 

 

 

Low when it cannot receive

* IN: signal from host to printer, OUT: signal from the printer to host

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