Access PCI-IDI-XX User Manual

10623 Roselle Street, San Diego, CA 92121 • [phone] • FAX [phone]

[e-mail] • www.accesio.com

MODELS

PCI-IDI-XX SERIES

USER MANUAL

File: mpci-idi-48.B1i

Notice

The information in this document is provided for reference only. ACCES does not assume any liability
arising out of the application or use of the information or products described herein. This document may
contain or reference information and products protected by copyrights or patents and does not convey
any license under the patent rights of ACCES, nor the rights of others.

IBM PC, PC/XT, and PC/AT are registered trademarks of the International Business Machines
Corporation.

Printed in USA. Copyright 2006 by ACCES I/O Products Inc, 10623 Roselle Street, San Diego, CA

92121. All rights reserved.

WARNING!!

ALWAYS CONNECT AND DISCONNECT YOUR FIELD CABLING WITH

THE COMPUTER POWER OFF. ALWAYS TURN COMPUTER POWER

OFF BEFORE INSTALLING A CARD. CONNECTING AND

DISCONNECTING CABLES, OR INSTALLING CARDS INTO A SYSTEM

WITH THE COMPUTER OR FIELD POWER ON MAY CAUSE DAMAGE

TO THE I/O CARD AND WILL VOID ALL WARRANTIES, IMPLIED OR

EXPRESSED.

Manual PCI-IDI-XX Series 2

Warranty

Prior to shipment, ACCES equipment is thoroughly inspected and tested to applicable specification s.
However, should equipment failure occur, ACCES assures its customers that prompt service and support
will be available. All equipment originally manufactured by ACCES which is found to be defective will be
repaired or replaced subject to the following considerations.

Terms and Conditions

If a unit is suspected of failure, contact ACCES' Customer Service department. Be prepared to give the
unit model number, serial number, and a description of the failure symptom(s). We may suggest some
simple tests to confirm the failure. We will assign a Return Material Authorization (RMA) number which
must appear on the outer label of the return package. All units/components should be properly packed for
handling and returned with freight prepaid to the ACCES designated Service Center, and will be returned
to the customer's/user's site freight prepaid and invoiced.

Coverage

First Three Years: Returned unit/part will be repaired and/or replaced at ACCES option with no charge for
labor or parts not excluded by warranty. Warranty commences with equipment shipment.

Following Years: Throughout your equipment's lifetime, ACCES stands ready to provide on-site or in-plant
service at reasonable rates similar to those of other manufacturers in the industry.

Equipment Not Manufactured by ACCES

Equipment provided but not manufactured by ACCES is warranted and will be repaired according to the
terms and conditions of the respective equipment manufacturer's warranty.

General

Under this Warranty, liability of ACCES is limited to replacing, repairing or issuing credit (at ACCES
discretion) for any products which are proved to be defective during the warranty period. In no case is
ACCES liable for consequential or special damage arriving from use or misuse of our product. The
customer is responsible for all charges caused by modifications or additions to ACCES equi pment not
approved in writing by ACCES or, if in ACCES opinion the equipment has been subjected to abnormal
use. "Abnormal use" for purposes of this warranty is defined as any use to which the equipmen t is
exposed other than that use specified or intended as evidenced by purchase or sales representation.
Other than the above, no other warranty, expressed or implied, shall apply to any and all such equipment
furnished or sold by ACCES.

Manual PCI-IDI-XX Series 3

Table of Contents

Chapter 1: Introduction.................................................................................................5

Table 1-1: Model Versions.......................................................................................6

Specification ..............................................................................................................7

Figure 1-1: Block Diagram ......................................................................................8

Chapter 2: Installation...................................................................................................9

Chapter 3: Option Selection....................................................................................... 11

Figure 3-1: Option Selection Map..........................................................................11

Chapter 4: Address Selection ....................................................................................12

Chapter 5: Programming............................................................................................13

Chapter 6: Connector Pin Assignments....................................................................15

Manual PCI-IDI-XX Series 4

Chapter 1: Introduction

Features

• Individually-Isolated AC/DC Inputs for up to Three 16-Bit Groups, 48 total.

• Reverse Polarity protection

• AC Filtering

• Optical Isolation, Channel-to-Channel and Channel-to-Host PC.

•

Description

This series of cards provide as many as 48 optically-isolated inputs for AC/DC signals with Chang e-of­State (COS) Detection capability. Each input is reverse polarity protected and rectified by photo-coupler
diodes. Standard 12/24 AC control transformer outputs can be accepted as well as DC voltages. The
input range is up to 60VDC or AC rms at frequencies of 40 to 10kHz.

Each input circuit contains a switchable filter that has a 4.7 millisecond time constant (without filtering, the
response is less than 30 microseconds). The filter must be selected for AC inputs in order to eliminate the
on/off response to AC. The filter is also valuable for use with slow DC input signals in a noisy
environment. The filter may be switched out for DC inputs in order to obtain faster response. Filters are
individually selected by jumpers. See Figures 1-1 and 3-1 for jumper arrangements.

The Change-of-State (COS) Detection capability (denoted by a “C” after the model number) provides a
means to automatically interrupt the host computer in real time. When one or more input bits change
state, a PCI interrupt is generated. That interrupt, in turn, can be used by your application program to
initiate a poll of the inputs, then signal appropriate alarms, and/or initiate scan of other I/O points that
have not been previously activated. This can greatly simplify your application program and eliminate need
to continuously poll inputs. COS Detection is enabled/disabled for all 3 groups of 16 bits. Chapter 5
describes the programming aspects of the COS feature.

These cards provide a much lower cost per point than externally-mounted, opti c ally-isolated, solid-state
modules or PLCs. Input connections are via ribbon-cable headers on the card, and a tie-down bar is
included to provide strain relief for those cables.

These cards are especially useful in applications where high-common-mode external voltages are
present as found in factory automation, energy management, security systems, and process monitoring
applications. In addition to protecting your computer from accidental contact with high external
voltages, the isolation provided eliminates troublesome ground loops.

There are 48-bit, 32-bit, and 16-bit versions. The latter two models are de-populated versions of the
48-bit card. Further, letters are appended to the model numbers to signify options included on the
card. Refer to Table 1-1 for model specific information.

Change-of-State detection (certain models).

Manual PCI-IDI-XX Series 5