Advantech PC-LabCard PCI-1784 Manuale utente

This documentation and the software included with this product are

copyrighted 2002 by Advantech Co., Ltd. All rights are reserved.

Advantech Co., Ltd. reserves the right to make improvements in the

products described in this manual at any time without notice. No part of this

manual may be reproduced, copied, translated or transmitted in any form or

by any means without the prior written permission of Advantech Co., Ltd.

Information provided in this manual is intended to be accurate and reliable.

However, Advantech Co., Ltd. assumes no responsibility for its use, nor for

any infringements of the rights of third parties which may result from its

use.

Acknowledgments

PC-LabCard is a trademark of Advantech Co., Ltd. IBM and PC are

trademarks of International Business Machines Corporation. MS-DOS,

Windows, Microsoft Visual C++ and Visual BASIC are trademarks of

Microsoft Corporation. Intel and Pentium are trademarks of Intel

Corporation. Delphi and C++ Builder are trademarks of Inprise

Corporation.

CE notification

The PCI-1784, developed by ADVANTECH CO., LTD., has passed the CE

test for environmental specifications when shielded cables are used for

external wiring. We recommend the use of shielded cables. This kind of

cable is available from Advantech. Please contact your local supplier for

ordering information.

On-line Technical Support

For technical support and service, please visit our support website at:

http://www.advantech.com/support

Note:

✎ Concerning the environment protection, we’d like to reduce the paper

using for the user’s manual. Starting the page of Appendix C, please find

the PDF file of the CD-ROM.

Part No. 2003178400 1st Edition

Printed in Taiwan July 2002

Contents

1. INTRODUCTION..................................................................................................................1

1.1 FEATURES........................................................................................................................1

1.2 APPLICATIONS .................................................................................................................4

1.3 INSTALLATION GUIDE...................................................................................................... 4

1.4 SOFTWARE OVERVIEW..................................................................................................... 6

1.5 DEVICE DRIVERS PROGRAMMING ROADMAP .................................................................. 7

1.6 ACCESSORIES .................................................................................................................. 9

2. INSTALLATION..................................................................................................................10

2.1 UNPACKING...................................................................................................................10

2.2 DRIVER INSTALLATION..................................................................................................12

2.3 HARDWARE INSTALLATION............................................................................................13

2.4 DEVICE SETUP & CONFIGURATION................................................................................ 16

3. SIGNAL CONNECTIONS.................................................................................................. 19

3.1 OVERVIEW.....................................................................................................................19

3.2 SWITCH AND JUMPER SETTINGS....................................................................................19

3.3 SIGNAL CONNECTIONS .................................................................................................. 21

APPENDIX A. SPECIFICATIONS........................................................................................ 25

APPENDIX B. BLOCK DIAGRAM ......................................................................................27

APPENDIX C. REGISTER STRUCTURE AND FORMAT...............................................29

C.1 OVERVIEW.................................................................................................................... 29

C.2 I/O PORT ADDRESS MAP .............................................................................................. 29

C.3 COUNTER 0/1/2/3 MODE — BASE+00/04/08/0CH ......................................................33

C.4 COUNTER 0/1/2/3 LATCH DATA — BASE+00/04/08/0CH.............................................35

C.5 COUNTER 0/1/2/3 COMPARE DATA — BASE+10/14/18/1CH........................................ 36

C.6 INTERRUPT CONTROL REGISTER — BASE+20H........................................................... 37

C.7 INTERRUPT STATUS REGISTER — BASE+20H ..............................................................38

C.8 CLEAR INTERRUPT — BASE+24H............................................................................... 39

C.9 CLEAR INTERRUPT — BASE+24H............................................................................... 40

C.10 SOFTWARE LATCH — BASE+28H.............................................................................. 41

C.11 BOARD ID — BASE+28H..........................................................................................42

C.12 RESET COUNTER — BASE+2CH................................................................................ 43

C.13 DIGITAL OUTPUT — BASE+30H................................................................................ 44

C.14 DIGITAL INPUT/OUTPUT — BASE+30H ..................................................................... 45

APPENDIX D. OPERATION .................................................................................................47

D.1 QUADRATURE ENCODER INTRODUCTION ...................................................................... 47

D.2 COUNTER MODES ......................................................................................................... 48

D.3 DIGITAL NOISE FILTER .................................................................................................. 49

D.4 LATCH MODE ................................................................................................................ 50

D.5 COUNTER RESET VALUE................................................................................................51

D.6 TIMER FUNCTION.......................................................................................................... 51

D.7 INTERRUPT FUNCTION .................................................................................................. 52

1. Introduction

Thank you for buying the Advantech PCI-1784. The PCI-1784 is a 4-

axis quadrature encoder and counter card for PCI bus. This card

includes four 32-bit quadruple AB phase encoder counters, 8-bit timer

with multi range time-base selector and four isolated digital input and

four isolated digital output. Its flexible interrupt sources are suitable for

motor control and position monitoring.

The following sections of this chapter will provide further information

about features of the multifunction cards, a Quick Start for installation,

together with some brief information on software and accessories for the

PCI-1784 card.

1.1 Features

❏Four 32-bit up/down counters

❏Single ended or differential inputs

❏Pulse/direction and up/down counter

❏x1, x2, x4 counts for each encoder cycle

❏Optically isolated up to 2500 VDC

❏4-stage digital filter with selectable sampling rate

❏On board 8-bit timer with wide range time-base selector

❏Multiple interrupt sources for precision application

❏Four isolated digital input

❏Four isolated digital output with flexible function

❏Board ID

The Advantech PCI-1784 offers the following main features:

Encoder Interface

Each channel includes a decoding circuit for incremental quadrature

encoding. Inputs accept either single-ended or differential signals.

Quadrature input works with or without an index, allowing linear or

rotary encoder feedback.

Counters

The PCI-1784 has four independent 32-bit counters. The maximum

quadrature input rate is 2 MHz, and the maximum input rate in counter

mode is 8 MHz. You can individually configure each counter for

quadrature decoding, pulse/direction counting or up/down counting.

Digital Input and Interrupts

The PCI-1784 provides four digital input channels. Each channel

accepts digital input as an index input for a rotary encoder or as a home

sensor input for a linear encoder. The card can generate an interrupt to

the system based on a signal from its digital inputs, overflow/underflow

and over-compare/under-compare of its counters, or on a programmed

time interval. It can repeatedly generate interrupts at any time interval

you specify, from 20 micro second to 51 second. These interrupts let

you precisely monitor the speed of a control system.

Flexible Digital Output function

The PCI-1784 provides four digital output channels. Each channel

accepts digital output as a normal TTL output for a rotary encoder, or as

an indicated output with pulse/level mode for a linear encoder. The PCI-

1784 can generate an indicated output based on a signal from over-

compare/under-compare of its counters. The pulse width of an indicated

output is depends on the counter clock or clear interrupt.

Special Shielded Cable for Noise Reduction

The PCL-10137H shielded cable is specially designed for the PCI-1784

for reducing noise. Its wires are all twisted pairs, and the input signals

and output signals are separately shielded, providing minimal cross talk

between signals and the best protection against EMI/EMC problems.

Keeping the Counter Values and the Output Status after system

reset

Users can independently use the four counter channels. When the

system is hot reset (power not shut down), the PCI-1784 can either

retain the last counter values and the output status, or return to its

default configuration, depending on jumper setting. This practical

function eliminates danger caused by miss-operation during unexpected

system reset.

Board ID

The PCI-1784 has a built-in DIP Switch that helps define each card’s ID

when multiple PCI-1784 cards have been installed on the same PC

chassis. The board ID setting function is very useful when users build

their system with multiple PCI-1784 cards. With correct Board ID

settings, you can easily identify and access each card during hardware

configuration and software programming.

Note:

✎ For detailed specifications of the PCI-1784, please refer to Appendix A,

Specifications.

1.2 Applications

❏Motion control

❏Position sensing, monitoring and measuring

❏Coordinate measuring machines

❏X-Y table monitors

❏Robotics

❏Machine control

1.3 Installation Guide

Before you install your PCI-1784 card, please make sure you have the

following necessary components:

❏PCI-1784 DA&C card

❏PCI-1784 User’s Manual

❏Driver software Advantech DLL drivers

(included in the companion CD-ROM)

❏Wiring cable PCL-10137H (option)

❏Wiring board ADAM-3937 (option)

❏Computer Personal computer or workstation with a

PCI-bus slot (running Windows 2000/95/98/

NT/ME/XP)

Some other optional components are also available for enhanced

operation:

❏Application software ActiveDAQ, GeniDAQ or other third-party

software packages

After you get the necessary components and maybe some of the

accessories for enhanced operation of your Multifunction card, you can

then begin the Installation procedures. Figure 1-1 on the next page

provides a concise flow chart to give users a broad picture of the

software and hardware installation procedures:

Fig. 1-1 Installation Flow Chart

Install Driver from CD-ROM, then power-off PC

Install Hardware and power-on PC

Use driver utility to configure hardware

Use test utility to test hardware

Read examples & driver manual

Start to write your own application

1.4 Software Overview

Advantech offers a rich set of DLL drivers, third-party driver support

and application software to help fully exploit the functions of your PCI-

1784 card:

❏Device Drivers (on the companion CD-ROM)

❏LabVIEW driver*

❏Advantech ActiveDAQ

❏Advantech GeniDAQ

Programming choices for DA&C cards: You may use Advantech

application software such as Advantech Device Drivers. On the other

hand, advanced users are allowed another option for register-level

programming, although not recommended due to its laborious and time-

consuming nature.

Device Drivers

The Advantech Device Drivers software is included on the companion

CD-ROM at no extra charge. It also comes with all the Advantech

DA&C cards. Advantech’s device drivers features a complete I/O

function library to help boost your application performance. The

Advantech Device Drivers for Windows 2000/95/98/ ME/NT/XP

works seamlessly with development tools such as Visual C++, Visual

Basic, Inprise C++ Builder and Inprise Delphi.

who find it necessary to write codes directly at the level of device

registers. Since register-level programming requires much effort and

time, we recommend that you use the Advantech Device Drivers

instead. However, if register-level programming is indispensable, you

should refer to the relevant information in Appendix C, Register

Structure and Format, or to the example codes included on the

companion CD-ROM.

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