Serial Interface (Option)

B.3 Serial Interface (Option)

Installing the optional serial interface board kit (IB-11) in the printer enables connection to a computer with an RS-232C standard serial interface.

B.3.1 RS-232C Interface

Interface Signals

The pins of the printer’s RS-232C interface connector carry the signals listed in Table B-3. The table also indicates whether each signal is incoming or outgoing with respect to the printer.

Pin

In/out

Signal

Description

1

-

FG

Frame ground

 

 

 

 

2

Out

TXD

Transmit Data

 

 

 

 

3

In

RXD

Receive Data

 

 

 

 

4

Out

RTS

Request To Send

 

 

 

 

5

In

CTS

Clear To Send

 

 

 

 

6

In

DSR

Data Set Ready

 

 

 

 

7

-

SG

Signal Ground

 

 

 

 

20

Out

DTR

Data Terminal Ready

 

 

 

 

Table B-3

Brief descriptions of the signals follow.

FG - Frame Ground - (Pin 1)

This pin is connected directly to the printer frame.

TXD - Transmit Data - (Pin 2)

This output carries asynchronous data sent by the printer to the computer.

It is used mainly in handshaking protocols.

RXD - Receive Data - (Pin 3)

This input carries serial asynchronous data sent by the computer to the printer.

RTS - Request To Send - (Pin 4)

This output is always held high (above 3 volts).

CTS - Clear To Send - (Pin 5)

DSR - Data Set Ready - (Pin 6)

Unused.

B-7

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Kyocera FS-1020D manual Serial Interface Option

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