Epson C82303 User Manual

32KB

Parallel Interface

EPSON OVERSEAS MARKETING LOCATIONS

1

EPSON AMERICA. INC.

2780 Lomita Blvd..

Torrance, Calif. 90505. U.S.A
Phone: [phone]
Fax: [phone]

EPSON UK LTD.
Campus 100. Maylands Avenue.

Hemel Hempstead.

HP2 7EZ. U.K.
Phone:

Telex. 5 162467

EPSON AUSTRALIA PTY. LTD.

““at

3. 17 Rodborough Road.

Frenchr Forest. NSW 2066, Austreha

Phone:

Fax:

(2)

EPSON ELECTRONICS TRADING LTD.

25/F.

Harbour

25 Harbour Road.
Hong Kong
Phone: [phone]

Telex: 65542

EPSON

V. le F.

SESTO S. GIOVANNI
Phone: 2.26233,
Fax: [phone]

SEIKO EPSON CORPORATION

(Hirooka

80

Harashmden, Hiraoka

Sh,o,m-sh,. Nagano-ken

399.07
Phone: [phone]

Her,s.

442-61144

12) 452-0666

975-1409

Centre.

Wanchai.

ITALIA S.D.A.

111 Carwaghi.

Office)

Japan

427 20099

MI.

Italy

EPSON DEUTSCHLAND GmbH

ZUlpicher

Stra6e

F.R. Germany
Phone: [phone]

Telex: 6584766

EPSON FRANCE S. A.

68 bis. rue

LevallowPerref.

Phone: [phone]
Telex. 610657

EPSON SINGAPORE PTE. LTD.

No. 1 Raffles Place #26-00
OUB Centrs. Singapore 0104
Phone: [phone]
Fax: [phone]

6. 4000 OUsseldarf

Marjohn

92300.

France

11

EPSON ELECTRONICS TRADING LTD.
(TAIWAN BRANCH)

1OF.

No. 287

Nankmg

Taipei. Taiwan. R.O.C.
Phone: [phone]
Fax: [phone]

EPSON-ST1

Pans.

152.

Phone: 4

1034.00

Fax: [phone]

E. Road Sec. 3.

S.A.

08036 Barcelona.

Span

1989 July

Printed in Japan 89.12-.4

FCC COMPLIANCE STATEMENT

FOR AMERICAN USERS

This equipment has been tested and found to comply with the limits for a Class B digital device.
Pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful Interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However there is no guarantee that
interference Will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:

-

Reorient or relocate the receiving antenna

-

Increase the separation between the equipment and receiver.

-

Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.

-

Consult the dealer or an experienced radio/TV technician for help

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1)

this device may not cause harmful interference. and

(2)

this device must accept any interference received,

including interference that may cause undesired operation.

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital
apparatus as set out in the radio interterence regulations of the Canadian Department of
Communications.

Le pr6sent apparelI numerique
applicables aux appareils numdnques de Class B prescrites dam lr rGglrment
radi&lectrique

The connection of a non-shielded printer interface cable to this printer will invalidate the FCC
Certification of this device and may cause interference levels which exceed the limits established
by the FCC for this equipment. If this equipment has more than one intertace connector. do not
leave cables connected to unused interfaces.

Seiko Epson Corporation shall not be liable against any damages or problems arising from the use
of any options or any consumable products other than those designated as Original Epson
Products or Epson Approved Products by Seiko Epson Corporation.

All rights reserved. Reproduction of any part of this manual, in any form whatsoever without Seiko

Epsons express written permission is forbidden.
The contents of this manual are subject to change without notice.
All efforts have been made to ensure the accuracy of this manual. However. should any errors be
detected, Seiko Epson would greatly appreciate being informed of them
The above notwithstanding, Seiko Epson can assume no responsibility for any errors in this
manual or their consequences.
Copyright © 1989 by Seiko Epson Corporation. Nagano. Japan

edict6

FOR CANADIAN USERS

“‘Pm&

pas de bruits radioClectriques depassant les limites

par

le

Minis&w des Commumcatmns du Canada.

WARNING

NOTICE

SW le

brouillage

32KB Parallel Interface

32-KB-Schnittstellenkarte

Interface parallsle 32Ko

Interface en paralelo de 32KB

Interfaccia parallela da 32 KB

TABLE OF CONTENTS

INTRODUCTION

About this guide

SETTING THE CONDITIONS

Board layout
DIP switch settings
Jumpers
Jumper settings

DATA ENTRY

About data entry
SELF TEST
SPECIFICATIONS
HARDWARE DESCRIPTION
INSTALLATION

FX, FX+
LX-80/86
LQ-800/1000

2
3

4
4
5
6
7

9

9
10
11
12

About this guide

This guide is designed to give you detailed information on
how to install your C82303* interface board in a variety of
Epson printers. Installation procedures vary slightly depend­ing upon the printer model that you have.

Also included, are instructions on how to adjust the settings of
the C82303* interface board, as well as a general description of
parallel data communication.

The C82303* option package contains the following items:

C82303* parallel I/F board (1)

FG plate

3

SETTING THE CONDITIONS

The C82303* interface board has a set of DIP (Dual In-line
Package) switches, and 6 jumpers. This switch and jumpers
are used for selecting various interface operations.

Board layout

The diagram below shows the layout of the C82303* board,
and the locations of the DIP switch and jumpers.

Figure 1. Board layout

DIP switch settings

Before you install the C82303* interface, you may need to
adjust some of the settings. When making DIP switch setting
changes, it is best to use a pointed device, such as a ball-point

pen

or small screwdriver.

Caution

All changes of DIP switch and jumper settings should be made
with the printer power turned off. The printer checks and
recognizes new settings only at the time the power is turned

About DIP switches

A set of DIP switches on the C82303* is labelled SW1. SW1
contains a number of individual toggle type switches that can
be set either on or off. The individual switches are referred to
by set (SW1) and number. Therefore, the switch in set SW1
marked by the small number 3 is called DIP switch 1-3.

5

DIP

switch

1

The table below contains information on switch functions, and
the factory setting of each switch. The switches on DIP switch

1 allow you to change interface functions.

Table 1. DIP

1

SW pin No.1

I

1-1 I/F board enable/disable Enable Disable

1-2

1-3

1-4

switch 1

(

Function

Buffer enable/disable Enable Disable
Self test enable/disable

I

Not used.

ON 1 Off ( Factory setting

Enable Disable

I I

-

)

ON
ON

OFF

-

OFF

J

Jumpers

The jumper is a small terminal used for connecting or discon-

necting a circuit. The jumper is on when the jumper plug

covers both wires of the terminal. Jumper settings can be
changed by either attaching or removing the rectangular
jumper plug. If the jumper is to be turned off, connect it to just
one of the two terminal pins as shown in the figure below. By

doing this, you can avoid losing the unused jumper plug.

Figure 2.

lumpers

OFF (open)

ON (close)

6

Jumper settings

The tables below give you information about the interface
conditions that can be selected using jumpers. In all cases, ON

denotes the connection of the jumper (covering both termi­nals), while OFF denotes the disconnection of the jumper.

Table 2. Jumper settings

Jumper

ON: SLCT IN signal is enable. (See Note 1.)

J1

Fixed (See Note 2.)

12

Fixed (See Note 2.)

J3

A

Data latch liming selection. See Table 3.

J4

B

I

ON: Connect Chassis Ground to Signal Ground.

JG

Note

1.

SLCT IN signal can be fixed LOW by setting the printer
DIP switch , jumper or SelecType function. If this signal is
fixed Low, you should not connect J1. When J1 is ON,
SLCT IN signal (pin No. 36 of I/F connector on the I/F
board) is connected to the printer through the I/F board to
enable it to be controlled by a Host computer. Sampling
this signal is always carried out by the printer, therefore
this function depends on the printer specification.

2.

J2 and J3 jumpers are connected at the factory, and you
should not change these setting.

Function

Factory Setting

OFF

-

-

OFF

I

Table 3. Data latch timing selection

Jumper

* ON

J4

Falling edge of

B OFF STROBE ON STROBE

Function

OFF

Rising edge of

Note

Either J4A or J4B jumper must be connected.

Factory Setting

ON

OFF

1

8

DATA ENTRY

About data entry

To accommodate data entry, the C82303* interface board is
equipped with a buffer that temporarily stores data before

I

transferring it to the printer. When this buffer becomes full,
any additional transmitted data cannot be accepted

and

is

discarded.
The buffered data is transferred transparently to the printer

main board every time the printer enters the READY state. A
maximum of 512K bytes of data can be buffered with this
board depending on its setting.

9

SELF TEST

The self test mode can be set by the DIP switch 1-3. To set, first
turn off the power to the printer and then change the DIP

switch setting. When the power is turned back on, the new
setting automatically comes into effect. To exit from the self

test, turn off the power and reset the DIP switch.
The interface board first checks the RAM condition. After

checking the RAM, data in the range between

<3&H

to

<3!bH

is sent to the printer and printed. The print out is only 80
columns wide.

Table 4. Self test mode

Note
It takes some time to check the RAM before

test printing.

SPECIFICATIONS

1.

Data transmission:

2. Synchronization:

3. Handshaking:

4.

Logic level:

5. RAM capacity:

6. Connector:

S-bit parallel
External supplied STROBE pulse
Via ACKNLG or BUSY

signals

TTL level
32K bytes
57-30360 (Amphenol), 36 pin or its

equivalents .

Interface timing
The figure below shows the timing for the parallel interface.

Figure 3. Interface timing

I

STROBE

I

I

11

HARDWARE DESCRIPTION

For signal description and pin assignment, refer to the table
below:

Table 5. Signal description and pin assignment

I

Signal

izn

Pin

12

13

Pin

19

20
21
22
23
24
25
26
27

30

-

-

I

I

Signal

YimiE

DATA 1
DATA 2
DATA 3 IN
DATA 4
DATA 5
DATA 6 IN
DATA 7
DATA 8

vXNLG

BUSY

SLCT

Ike&on

IN

IN
IN

IN
IN

IN
IN

OUT

OUT

OUT

OUT

L

Description

STROBE pulse to read data. Pulse
width must be more than 0.5 micro­seconds at the receiving

These signals represent information
of the 1st to 8th bits of parallel data,
respectively. Each signal is at
HIGH level when data is logical 1
and LOW when it is logical 0.

About a IO-microsecond pulse.
LOW indicates that data has been
received and that the interface
board is ready to accept more data.
This signal is output as a pair
together with BUSY.

A HIGH signal indicates that the
interface board cannot receive data.
The signal goes HIGH in the
following cases:

1) During data entry (ea. car. time)

2) When off line

3) During printer-error state
A HIGH signal indicates that the

printer is out of paper.
Pulled up to +5 V through 3.3k ohm

resistance.

terminal.

12

13

Note

1.

The column heading “Direction” refers to the direction of
signal flow as viewed from the printer.

2.

All interface conditions are based on TTL level. Both the
rise and fall of each signal must be less than 0.2

KS.

14

-

3

:

‘Xii

NOILV-IWLSNI

xda

+xiI

L

98/08-X1

000T/008-iTI

we

C