ADLINK ACL-7120A/6 User Manual

NuDAQ®

ACL-7120A

Digital I/O & Timer/Counter Card

User’s Guide

Copyright 1995, 2003 ADLINK TECHNOLOGY INC.
All Rights Reserved.
Manual Rev. 1.00: May 30, 2003
Part No: 50-11031-100

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 inabil ity 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.

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NuDAQ, ACL-7120A is registered trademarks of ADLINK TECHNOLOGY
INC.

Other product names mentioned herein are used for identification pur poses
only and may be trademarks and/or registered trademarks of their respective
companies.

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Table of Contents

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

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

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

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

1.4 Software Support....................................................................... 5

1.4.1 ACLS-DLL1...........................................................................5

1.4.2 ACLS-LVIEW........................................................................5

Chapter 2 Installation.........................................................7

2.1 What’s Included......................................................................... 7

2.2 Unpacking ................................................................................. 8

2.3 ACL-7120A Layout.................................................................... 9

2.4 Jumper and DIP Switch Description........................................ 10

2.5 Base Address Setting.............................................................. 11

2.6 Interrupt Settings..................................................................... 13

2.7 Clock Frequency Settings .......................................................15

2.8 ACL-7120A Software Library Installation................................ 16

Chapter 3 Signal Connections.........................................17

3.1 Connector Pin Assignment...................................................... 17

3.2 Timer/counter signal pads....................................................... 21

3.3 Interrupt Trigger Source.......................................................... 22

3.4 Clock Source Pads.................................................................. 23

3.5 Latch Digital Inputs.................................................................. 24

Chapter 4 Programming................................................... 25

4.1 I/O Registers Format............................................................... 25

4.2 Digital I/O Programming.......................................................... 26

4.3 Programmable Interval Timer.................................................. 28

4.3.1 The Intel (NEC) 8254............................................................28

4.3.2 The Control Byte...................................................................28

4.3.3 Mode definition......................................................................30

Warranty Policy ................................................................33

How to Use This Guide

This manual is designed to assist users in understanding the ACL-7 120A and
describes how to modify settings to meet specific application requirements.

Chapter 1 Introduction

Overview of product features, applications, and specifications.

Chapter 2 Installation

Describes install procedures, layout, DIP switch settings, and
jumper settings.

Chapter 3 Signal Connection

Illustrates the connector pin assignments, timer/counter signal
pad, and clock source.

Chapter 4 Programming

Demonstrates how to program the ACL-7120A.

ii • How to Use This Guide

1

Introduction

The ACL-7120A digital I/O and counter/timer card consists of 32 digital input,
32 digital output, and 4 timer/counter channels. All digital input/output
channels are TTL/DTL compatible. The most outstanding feature of the ACL­7120A is that it is fully hardware and software compatible with both the
ADLINK ACL-7120 and Advantech PCL-720 cards.

The ACL-7120A supports additional daughter boards like the ACLD-9182
and ACLD-9185 cards. The ACLD-9182 is a 16 channel opto-isolated digital
board for inputting digital data to the ACL-7120A when ground isolation is
required. The ACLD-9185 is a 16-channel relay output board that can be
driven by digital outputs from the ACL-7120A.

Up to four programmable interval timers (8254) are provided to add timer and
counter functionalities. To efficiently use the counter, three frequency
sources (10kHz, 100kHz, and 1MHz) are supported for the input of each
counter. In addition, the sources can also be doubled (X2), halved (1/2) or
quartered (1/4) through jumper settings to give more flexibility for different
frequency timer and counter applications.

An optional timer/counter chip is used to support a timer pacer that can
generate periodic interrupts. Also, an event counter can be used for external
event counting.

Introduction • 1

1.1 Features

• Fully compatible with ADLINK ACL-7120 and Advantech PCL-720

• 32 TTL digital input channels

• 32 TTL digital output channels

• High output driving and low input loading

• 3 independent programmable 16-bit down counter

• One 32-bit timer (two 16-bit counter cascaded together) with a 4MHz

time base

• One 16-bit counter with 4MHz time base

• Crystal-based frequency source

• Breadboard area for customized circuits

1.2 Applications

• Industrial and laboratory ON/OFF control

• Energy management

• Annunciation

• Security controller

• Product test

• Period and pulse width measurement

• Event and frequency counting

• Waveform and pulse generation

• BCD interface driver

2 • Introduction

1.3 Specifications

General Specification:

♦

Dimensions:

•

Bus:

•

•

PC-AT bus

I/O port address:

193.5 mm x 114 mm

Hex 200 - Hex 3FF

Interrupt IRQ Level:

•

Digital Input:

♦

• Input logic low voltage: Min. -0.5V, Max. 0.8V

• Input logic high voltage: Min. 2.0V, Max. 5.0V

• Input loading current: Max. 0.2 mA at 0.4V

• Input hysteresis: Typical 0.4V, Min. 0.2V

Digital Output:

♦

• Output logic low voltage (Sink): Max. 0.5V at 24mA

• Output logic high voltage (Source): Min. 2V at –15mA

• Driving Capacity: All inputs and outputs are TTL/DTL compatible.

Outputs will drive 1 standard TTL load (74 series) or 4 LSTTL (74LS)
loads

• Input hysteresis: Typical 0.4V, Min. 0.2V

Programmable Counter:

♦

Frequency:

•

Counter:

•

4MHz

Device Number of counters
ACL-7120A/3 3
ACL-7120A/6 4

IRQ3 - IRQ15

Introduction • 3

Mode:

•

•

•

•

hole size: 1.0 mm
pad size: 1.5 mm

6 programmable modes

Usable pins:

Device Usable pins
ACL-7120A/3 CLK and GATE for counter 0 - counter 2
ACL-7120A/6 CLK and GATE for counter 0 - counter 3

counter usage :

Device Counter usage
ACL-7120A/3 Counters 0 - 2 are customizable
ACL-7120A/6 Counters 0 - 2 are customizable

Breadboard Area:

Counter 3 is used as the event counting
interrupt source or is user defined

Counters 4 and 5 are cascaded for timer pacer
generation

plated through hole:

Operating temperature:

•

Storage Temperature:

•

Humidity:

•

4 • Introduction

0 to 60°C

-20° C to 80° C

5 to 90%, non-condensing

1.4 Software Support

The ACL-7120A is programmable using simple 8-bit I/O port commands.
Users can use high-level languages, such as BASIC, C, or PASCAL, or low­level language, such as assembly to program the board. To program under
Windows or LabView, please contact an ADLINK dealer for information on
the ACLS-DLL1 and ACLD-LVIEW.

1.4.1 ACLS-DLL1

The ACLS-DLL1 provides simple ACL-07120A board programming under a
Windows 9x/NT/2000 environment using DLLs. With the ACLS-DLL1, us ers
can use compilers such as VB, VC/C++, and Delphi.

1.4.2 ACLS-LVIEW

For an easy link between ACL-7120A and LabView, the ACLS-LVIEW
includes VIs of the ACL-7120A for use under for Windows

3.1/9x/NT/2000/XP.

Introduction • 5