Measurement Computing PCI-DIO24 User manual

PCI-DIO24
24-bit, Logic-level Digital I/O
User's Guide
Document Revision 3, May, 2009
© Copyright 2009, Measurement Computing Corporation

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HM PCI-DIO24.doc
Your new Measurement Computing product comes with a fantastic extra —
Management committed to your satisfaction!
Thank you for choosing a Measurement Computing product—and congratulations! You own the finest, and you can now enjoy
the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our mission:
To provide PC-based data acquisition hardware and software that will save time and save money.
Simple installations minimize the time between setting up your system and actually making measurements. We offer quick and
simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system.
Limited Lifetime Warranty: Most MCC products are covered by a limited lifetime warranty against defects in materials or
workmanship for the life of the product, to the original purchaser, unless otherwise noted. Any products found to be defective in
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information, please refer to the terms and conditions of sale.
Harsh Environment Program: Any Measurement Computing product that is damaged due to misuse, or any reason, may be
eligible for replacement with the same or similar device for 50% of the current list price. I/O boards face some harsh
environments, some harsher than the boards are designed to withstand. Contact MCC to determine your product’s eligibility for
this program.
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consequential damage arising from the use of its products, even if Measurement Computing Corporation has been notified in
advance of the possibility of such damages.

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Notice
Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use
in life support systems and/or devices without prior written consent from Measurement Computing Corporation.
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Measurement Computing Corporation products are not designed with the components required, and are not subject
to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people.

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Table of Contents
Preface
About this User's Guide.......................................................................................................................6
What you will learn from this user's guide.........................................................................................................6
Conventions in this user's guide........................................................................................................................................ 6
Where to find more information.........................................................................................................................6
Chapter 1
Introducing the PCI-DIO24 ...................................................................................................................7
Software features................................................................................................................................................7
Chapter 2
Installing the PCI-DIO24 .......................................................................................................................8
What comes with your PCI-DIO24 shipment?...................................................................................................8
Hardware .......................................................................................................................................................................... 8
Additional documentation................................................................................................................................................. 8
Optional components........................................................................................................................................................ 8
Unpacking the PCI-DIO24.................................................................................................................................9
Installing the software ........................................................................................................................................9
Installing the hardware .......................................................................................................................................9
Configuring the hardware...................................................................................................................................9
Connecting the board for I/O operations..........................................................................................................10
Connectors, cables –main I/O connector ........................................................................................................................10
Pin out –main I/O connector...........................................................................................................................................10
Cabling.............................................................................................................................................................................11
Field wiring and signal termination .................................................................................................................................11
Chapter 3
Functional Details...............................................................................................................................12
PCI-DIO24 block diagram ...............................................................................................................................12
DIO signals.......................................................................................................................................................12
Signal level control...........................................................................................................................................13
Chapter 4
Specifications......................................................................................................................................15
Power consumption ..........................................................................................................................................15
Digital input / output ........................................................................................................................................15
Environmental ..................................................................................................................................................15
Main connector and pin out..............................................................................................................................16
Declaration of Conformity..................................................................................................................17

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Preface
About this User's Guide
What you will learn from this user's guide
This user's guide explains how to install, configure, and use the PCI-DIO24 so that you get the most out of the
digital I/O features.
This user's guide also refers you to related documents available on our web site, and to technical support
resources.
Conventions in this user's guide
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you are
reading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
< : > Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned
to registers, bit settings, etc.
bold text Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For
example:
1. Insert the disk or CD and click the OK button.
italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For
example:
The InstaCal® installation procedure is explained in the Quick Start Guide.
Never touch the exposed pins or circuit connections on the board.
Where to find more information
For additional information relevant to the operation of your hardware, refer to the Documents subdirectory
where you installed the MCC DAQ software (C:\Program Files\Measurement Computing\DAQ by default), or
search for your device on our website at www.mccdaq.com.
If you need to program at the register level in your application, refer to the Register Map for the PCI-DIO24,
PCI-DIO24H, PCI-DIO24/S, and PCI-DIO24/LP. This document is available on our website at
www.mccdaq.com/registermaps/RegMapPCI-DIO24X.pdf.

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Chapter 1
Introducing the PCI-DIO24
This manual explains how to install, configure and use the PCI-DIO24 digital I/O board.
The PCI-DIO24 provides 24 lines of digital I/O. An on-board, industry standard 82C55 programmable
peripheral interface chip provides the 24 digital I/O lines in three eight-bit ports (Port A, Port B, and Port C).
Port C can be further divided into two four-bit ports (Port C-HI and Port C-LO). You can configure each port
independently for either input or output. All 24 I/O lines are accessible through the board's 37-pin connector.
The I/O pins of an 82C55 are bi-directional CMOS TTL level.
82C55 mode 1 or mode 2 operation
This user's guide provides information on I/O configuration of the 82C55 in mode 0. To use the 82C55 in
modes 1 or 2, refer to the 82C55A CMOS Programmable Interface datasheet. This document is available on our
web site at www.mccdaq.com/82C55.
Software features
For information on the features of InstaCal and the other software included with your PCI-DIO24, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version or versions of the software supported
under less commonly used operating systems.

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Chapter 2
Installing the PCI-DIO24
What comes with your PCI-DIO24 shipment?
The following items are shipped with the PCI-DIO24.
Hardware
PCI-DIO24
Additional documentation
In addition to this hardware user's guide, you should also receive the Quick Start Guide (available in PDF at
www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf). This booklet supplies a brief description of
the software you received with your PCI-DIO24 and information regarding installation of that software. Please
read this booklet completely before installing any software or hardware.
Optional components
If you ordered any of the following products with your board, they should be included with your shipment.
Cables
C37FF-x
C37FFS-x

PCI-DIO24 User's Guide Installing the PCI-DIO24
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Signal termination and conditioning accessories
MCC provides signal termination products for use with the PCI-DIO24. Refer to the "Field wiring and
signal termination" section on page 11 for a complete list of compatible accessory products.
Unpacking the PCI-DIO24
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PCI-DIO24 from its packaging, ground yourself using a wrist strap or by
simply touching the computer chassis or other grounded object to eliminate any stored static charge.
If any components are missing or damaged, notify Measurement Computing Corporation immediately by
phone, fax, or e-mail:
Phone: [phone] and follow the instructions for reaching Tech Support.
Fax: [phone] to the attention of Tech Support
Email: [email protected]
Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data
Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFmanuals/DAQ-Software-
Quick-Start.pdf.
Installing the hardware
The PCI-DIO24 board is completely plug-and-play, with no switches or jumpers to set. Configuration is
controlled by your system's BIOS. To install your board, follow the steps below.
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install
the MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on
installing the software.
1. Turn your computer off, open it up, and insert your board into an available PCI slot.
2. Close your computer and turn it on.
If you are using an operating system with support for plug-and-play (such as Windows 2000 or Windows
XP), a dialog box pops up as the system loads indicating that new hardware has been detected. If the
information file for this board is not already loaded onto your PC, you will be prompted for the disk
containing this file. The MCC DAQ software contains this file. If required, insert the Measurement
Computing Data Acquisition Software CD and click OK.
3. To test your installation and configure your board, run the InstaCal utility installed in the previous section.
Refer to the Quick Start Guide that came with your board for information on how to initially set up and
load InstaCal.
Configuring the hardware
All hardware configuration options on the PCI-DIO24 are software controlled.

PCI-DIO24 User's Guide Installing the PCI-DIO24
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Connecting the board for I/O operations
Connectors, cables –main I/O connector
The table below lists the board connector type, applicable cables, and compatible accessory products for the
PCI-DIO24.
Board connectors, cables, and accessory equipment
Connector type
37-pin D-type
Compatible cables
C37FF-x unshielded ribbon cable. x = length in feet. (see Figure 2)
C37FFS-x cable shielded round cable. x = length in feet. (see Figure 3)
Compatible accessory products
(with the C37FF-x or C37FFS-x cable)
SCB-37
CIO-MINI37
CIO-MINI37-VERT
CIO-ERB08
CIO-SERB08
CIO-ERB24
CIO-SPADE50
SSR-RACK08
SSR-RACK24
Pin out –main I/O connector
The I/O connector is a 37-pin, male D-type connector accessible from the rear of the computer through the
expansion backplate. The signals available are direct connections to the digital I/O chips as well as the
computer's internal power supplies. The pin out is identical to the CIO-DIO24, except that –5 VDC is not
brought out. The PCI-DIO24 board's I/O connector is shown in Figure 1.
Figure 1. PCI-DIO24 board connector pin out