ADLINK Technology ACL-7122 Manuel utilisateur

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ACL-7122

144-Bit Parallel

Digital I/O Board

User’s Manual

Manual third edition: 1, September 1997

The information in this document is subject to change without prior notice in

order to improve reliability, design and function and does not represent a

commitment on the part of the manufacturer.

In no event will the manufacturer be liable for direct, indirect, special,

incidental, or consequential damages arising out of the use or inability to use

the product or documentation, even if advised of the possibility of such

damages.

This document contains proprietary information protected by copyright. All

rights are reserved. No part of this manual may be reproduced by any

mechanical, electronic, or other means in any form without prior written

permission of the manufacturer.

Trademarks

ACL-7122 is registered trademarks of ADLink Technology Inc., Advantech

and PCL-722 are trademark of Advantech Co., Ltd. IBM PC is a registered

trademark of International Business Machines Corporation. Intel is a registered

trademark of Intel Corporation. Other product names mentioned herein are

used for identification purposes only and may be trademarks and/or registered

trademarks of their respective companies.

Contents

•

CONTENTS

How to Use This Manual............................... iii

Chapter 1 Introduction ................................1

1.1 Features .....................................................................2

1.2 Applications................................................................2

1.3 Specifications .............................................................3

Chapter 2 Installation..................................5

2.1 What You Have............................................................5

2.2 Unpacking...................................................................6

2.3 ACL-7122's Layout ......................................................7

2.4 Jumper and DIP Switch Description ............................8

2.5 DIO Channel No. Setting..............................................8

2.6 Base Address Setting ..................................................9

2.7 Interrupt Setting...................................................... 11

2.8 Connector Pin Assignment....................................... 14

2.9 Connection .............................................................. 16

Chapter 3 Digital I/O Programming............17

3.1 Register Structure & Format.................................... 17

•

Contents

3.2 Mode 0 of 8255 PPI................................................. 18

3.3 Interrupt Handling................................................... 19

3.4 Programming Notes................................................. 20

3.5 Programming in C language .................................... 22

Appendix A. I/O Port Address Map ...............25

Product Warranty/Service...........................27

How to Use This Manual

•

iii

How to Use This Manual

This manual is designed to help you use the ACL-7122. The

manual describes how to modify various settings on the ACL-

7122 card to meet your requirements. It is divided into five

chapters:

•Chapter 1, "Introduction," gives an overview of the

product features, applications, and specifications.

•Chapter 2, "Installation," describes how to install the ACL-

7122. The layout of ACL-7122 is shown, the DIP switch

setting for base address, and jumpers setting for IRQ level

and interrupt status are specified.

•Chapter 3, "Digital I/O Programming," describes how to

program the digital input and output channels on the ACL-

7122.

•Appendix A, " I/O Port Address Map", specifies the PC's

default I/O Port address map.

Introduction

•

Introduction

The ACL-7122 - 144 Bit Digital I/O board is a high density

parallel Digital I/O board for ISA bus-compatible computer in

industrial applications. It is fully hardware and software

compatible with Advantech's PCL-722.

This board provides 6 sets to emulate industry standard 8255

Programmable Peripheral Interface (PPI) chips, each offers 3

ports: PA, PB, and PC. PC is subdivided into 2 nibble-wide (4-bit)

ports. Each channel has an individual connector with OPTO-22

pin assignment. It is very essential to use isolated input to

prevent the ground loop problems.

The ACL-7122 is programmed using simple 8-bit I/O port

commands. Users can use high level language, such as BASIC,

C, or PASCAL, or low level language, such as Assembly to

program the board. It is not any special software driver

supported.

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