Epson C8230 User Manual

1. I/F board connector: EIA standard 25-pin D-SUB

female connector.

2. For signal description and pin assignment, refer to

the table below:

Pin No.

Signal name

Direction

Description

1

protective
Ground

—

Chasis ground

Transmitted

2

Data (TXD)

Text

Transmitted serial data

3

Received Data
(RXD)

Ill

Received serial data

4

Request to

o u t

This signal is always at the

Send (RTS)

positive EIA level.

7

Signal Ground

In

Return path for data and

control signals.

Reverse

1 1

Channel

Out

(=2nd RTS)

Data Terminalk t

20

O u t

Ready (DIR)

  This

 signal is at he positive

EIA Level when the printer is

ready to accept data entry

and at the negative EIA

level when the printer is not

ready to accept data entry
Operator can invert the

polarity of the signal with
jumper 15.

19