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Epson C82307/08 (Serial I/F User Manual

Epson c82307/08 (serial i/f).
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EPSON
32KB
Serial Interface Card
C82307 *
C823088 *
English
Deutsch
Français
Español
Italiano
4 0 0 0 2 7 3
C 0 1 - 0 0

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   Summary of Contents for Epson C82307/08 (Serial I/F

  • Page 1

    EPSON 32KB Serial Interface Card C82307 * C823088 * English Deutsch Français Español Italiano 4 0 0 0 2 7 3 C 0 1 - 0 0...

  • Page 2

    Original Epson Products or Epson Approved Products by Seiko Epson Corporation NOTICE All rights reserved. Reproduction of any part of this manual in any form whatsoever without Seiko Epson’s express written permission is forbidden.

  • Page 3

    32KB Serial Interface Card English C82307* / C82308* 32-KB-Schnittstellenkarte Deutsch C82307* / C82308* Carte d´Interface série 32Ko Français C82307* / C82308* Módulo de interface en serie de 32KB Español C82307* / C82308* Scheda dell´interfaccia seriale da 32KB Italiano C82307* / C82308*...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION About this guide SETTING THE CONDITIONS Card layout DIP-switch and jumper settings DIP switches Jumpers DATA ENTRY Serial communication About data entry Handshaking protocol SELF TEST Loopback mode Line-monitor mode SPECIFICATIONS HARDWARE DESCRIPTION CIRCUIT DIAGRAMS INSTALLATION...

  • Page 5: Introduction

    The Serial Interface Card C82307 * /C82308 * is an interface that allows asynchronous serial data communication between a host computer and an EPSON printer. This interface card offers the following features: • A 32K byte buffer that frees up your computer for other uses while your printer continues to print •...

  • Page 6: About This Guide

    About this guide This guide is designed to give you detailed information on how to install your C82307 * /C82308 * serial interface card in a variety of EPSON printers. Installation procedures vary slightly depending upon the printer model that you have.

  • Page 7: Setting The Conditions

    SETTING THE CONDITIONS The C82307 * /C82308 * interface card has three sets of DIP (Dual In-line Package) switches, and eight jumpers. DIP (Dual In-line Package) switches, and eight jumpers. These switches and jumpers are used for selecting These switches and jumpers are used for selecting various interface operations.

  • Page 8: Dip-switch And Jumper Settings

    DIP switch and jumper settings Before you install the C82307* /C82308* interface, you may need to adjust the DIP-switch 2, DIP-switch 3, and jumper settings. You can change the DIP-switch 1 settings after you install the interface. When making DIP-switch setting changes, it is best to use a pointed device, such as a ball-point pen or small screwdriver.

  • Page 9

    DIP switch 1 (interface operations) The tables below contain information on switch functions, and the factory setting of each. Table 1. DIP switch 1 Note Some printers have a selecting switch (or function) that allows you to select between the optional and original interfaces.

  • Page 10

    Data word structure The data word structure is also operator selectable through DIP-switch settings (See Table The word structure for serial data is: 1 start bit +7 or 8 data bits (selectable) + parity bit (selectable) + l or more stop bits. The table below shows the possible word structure combinations.

  • Page 11

    DIP switch 2 (interface operations) The tables below contain information on switch functions, and the factory setting of each. Table 4. DIP switch 2...

  • Page 12

    Baud rate selection In serial data communication, data is transmitted in the form of bits. These data bits go out one at a time along a single path, and in a specified order. The BPS (Bits Per Second) rate, or speed at which these bits are transmitted, can be selected using a combination of DIP- switch settings.

  • Page 13

    Handshaking selection and Interface selection The table below shows the relation between handshaking selection and interface selection. Table 6. Handshaking and interface Note • In RS-422A mode, selecting DTR handshaking outputs the DTR flag through the DTR pin (No. 20); selecting X-on/X-off handshaking, fixes the value of the DTR •...

  • Page 14

    Table 7. Handshaking protocol selection Table 8. Interface selection...

  • Page 15

    DIP switch 3 (Interface operation) The tables below contain information on switch functions, and the factory setting of each. Table 9. DIP switch 3...

  • Page 16

    Note • Buffer full recovery timing (DIP switch 3-2 and 3-3) and DTR flag set/X-off transmit timing (DIP switch 3-6) selections are enabled only when buffer operation is enabled (DIP switch 3-1 is OFF). If SW3-1 is ON, buffer full recovery timing is set to 32 bytes and DTR flag set/X-off transmit timing is set to 16 bytes.

  • Page 17: Jumpers

    Jumpers The jumper is a small terminal used for connecting or disconnecting 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.

  • Page 18

    Table 11. Jumper settings Note • If the host computer is not equipped with a power supply for the Current-Loop interface, jumpers Jl, J2, and J3 must be connected for communications via the Current-Loop interface. • When Current-Loop is selected, see the section on circuit diagrams to determine the correct current source and current return.

  • Page 19: Data Entry

    DATA ENTRY This section gives a brief description of serial data communication conditions and handshaking protocols supported by the C82307* /C82308* interface card. Serial data communications The C82307* /C82308* interface allows you to select either RS-232D, RS-422A, or 20-mA Current-Loop signal levels for data communication.

  • Page 20: Handshaking Protocol

    Handshaking protocol X-on/X-off Protocol X-on/X-off protocol is a system in which the printer transmits a code to the computer to indicate that it cannot accept more data, and a second code when it is once again ready. This protocol can be performed under either RS-232D, RS-422A, or 20-mA Current-Loop signal levels.

  • Page 21

    • Transmit timing of the X-on signal The X-on signal is transmitted when the power is first turned on, and when the vacant area in the buffer is greater than the preset value of the buffer recovery timing. Refer to Table 12 for information on flag set/reset conditions.

  • Page 22

    With the status flag set and data reception prohibited, the vacant area of the buffer gradually increases as the printer continues to print. When the vacant area for bytes reaches the preset recovery value (see Table 12), the flag is reset and data entry is again enabled. Buffer Operation Disabled Under this condition, the flag is output from the DTR (pin No.

  • Page 23

    Flag set timing is selectable with DIP switch 3-6, and flag reset timing is selectable with DIP switches 3-2 and 3-3. Printer status error The flag is set immediately, regardless of the remaining buffer capacity, if the printer detects an error.

  • Page 24: Self Test

    SELF TEST Two self-test modes can be selected by DIP switches 3-7 and 3-8. To select a self-test mode, first turn off the power to the printer and then change the DIP-switch setting. When the power is turned back on, the new settings automatically go into effect.

  • Page 25: Line-monitor Mode

    Line-monitor mode During this test, data on the RS-232D line, RS-422A line, or Current-Loop line is printed in hexadecimal code. The only difference between normal operation and this mode is that all data is converted into hexadecimal form.

  • Page 26: Specifications

    SPECIFICATIONS 1. Synchronization: Asynchronous Baud Rate: RS-232D: 75, 110, 134.5, 150, 200, 300, 600, 1,200, 1,800, 2,400, 4,800, 9,600, or 19,200 BPS (selectable) RS-422A: 75, 110, 134.5, 150, 200, 300, 600, 1,200, 1,800, 2,400, 4,800, 9,600, 19,200, or 38,400 BPS (selectable) Current Loop: 75, 110, 134.5, 150, 200, 300, 600, 1,200, 1,800, 2,400,...

  • Page 27

    5 . Handshaking Table 15. Handshaking Using DTR Using X-on/X-off protocol protocol RS-232D Data transmitted from pin The signal at pin No. 20 is as follows; No. 2 is controlled as MARK-data transfer follows; disabled X-on (11H)—data transfer SPACE-data transfer enabled enabled X-off (13H)—data transfer...

  • Page 28: Hardware Description

    HARDWARE DESCRIPTION 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: Table 16. Signal Description and Pin Assignment...

  • Page 30

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

  • Page 31: Circuit Diagrams

    CIRCUIT DIAGRAMS RS-232D Transmitter/Receiver Circuit Diagrams Figure 4. Transmitter Circuit Diagram l/3 MC145407 T X D From TXD l/3 MC145407 From DTR Figure 5. Receiver Circuit Diagram MC145407 To RXD...

  • Page 32

    RS-422A Transmitter/Receiver Circuit Diagrams Figure 6. Transmitter Circuit Diagram Figure 7. Receiver Circuit Diagram...

  • Page 33

    Current-Loop Transmitter/Receiver Circuit Diagrams Figure 8. Transmitter Circuit Diagram Figure 9. Receiver Circuit Diagram Note Set Jumpers J1, J2, and J3 referring these diagrams.

  • Page 34: Installation

    The following section gives you detailed information on how to install your interface card in a variety of EPSON printers. Caution • Turn off the power to the printer and the computer before installing the interface card.

  • Page 35

    2. Fit both sides of this interface card into the guides inside the compartment. 3. Insert this interface card until the interface pins mate with the connector inside your printer. 4. Secure the interface with the two screws.

  • Page 36

    EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. EPSON DEUTSCHLAND GmbH Zülpicher Straße, 4000 Düsseldorf 11 2780 Lomlta Blvd., Torrance. Calif. 90505. U.S.A F.R. Germany Phone: (0211) 56030 Phone: (213) 539-9140 Fax: (213) 534-5854 Telex: 8584786 EPSON FRANCE S. A. EPSON UK LTD.

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