PCI-DIO24/LP
Digital Input/Output
User's Guide

Document Revision 7A, May, 2009
© Copyright 2009, Measurement Computing Corporation

Trademark and Copyright Information
Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo areeither trademarks or registered trademarks of Measurement Computing Corporation. Refer to the Copyrights &Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective
companies.
© 2009 Measurement Computing Corporation. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by
photocopying, recording, or otherwise without the prior written permission of Measurement Computing
Corporation.
NoticeMeasurement 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. Life support devices/systems are devices or systems that, a) are intended for surgical implantation
into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result ininjury. 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 ofpeople.

HM PCI-DIO24_LP.doc

3

PCI-DIO24/LP User's Guide

4

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/LP ..............................................................................................................7
Overview: PCI-DIO24/LP features .................................................................................................................... 7
Software features ................................................................................................................................................ 7
Chapter 2

Installing the PCI-DIO24/LP ..................................................................................................................8
What comes with your PCI-DIO24/LP shipment? ............................................................................................. 8
Hardware .......................................................................................................................................................................... 8
Additional documentation ................................................................................................................................................. 8
Optional components ........................................................................................................................................................ 8

Unpacking the PCI-DIO24/LP ........................................................................................................................... 9
Installing the software ........................................................................................................................................ 9
Installing the PCI-DIO24/LP .............................................................................................................................. 9Connecting the board for I/O operations ............................................................................................................ 9Connectors, cables – main I/O connector.......................................................................................................................... 9
Pin out – main I/O connector ...........................................................................................................................................10
Cabling.............................................................................................................................................................................10
Field wiring, signal termination and conditioning ...........................................................................................................10
Chapter 3

Functional Details ...............................................................................................................................11
PCI-DIO24/LP block diagram .......................................................................................................................... 11
Signal level control ........................................................................................................................................... 12
Chapter 4

Specifications ......................................................................................................................................14
Digital input/output........................................................................................................................................... 14Interrupts........................................................................................................................................................... 14Power consumption .......................................................................................................................................... 14
Environmental .................................................................................................................................................. 14
Mechanical ....................................................................................................................................................... 15
Connector and pin out....................................................................................................................................... 15
Declaration of Conformity ..................................................................................................................16

5

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide explains how to install, configure and use the PCI-DIO24/LP digital I/O board.
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 arereading.
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 atwww.mccdaq.com/registermaps/RegMapPCI-DIO24X.pdf.

6

Chapter 1

Introducing the PCI-DIO24/LP
Overview: PCI-DIO24/LP features
This manual explains how to install, configure and use the PCI-DIO24/LP digital I/O board. You can use the
PCI-DIO24/LP to control logic devices such as switches, gauges, relays, pumps, and sensors in a variety ofdigital applications.
The PCI-DIO24/LP is a 24-bit, TTL-compatible digital I/O board. The board has an MD2 form factor for low
profile systems.
An on-board, industry standard 82C55 programmable peripheral interface chip provides 24 discrete 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.
You can configure each port independently for either input or output. The PCI-DIO24/LP supports 5V or 3.3V
TTL/CMOS I/O signaling. Digital I/O lines are accessed through a 68-pin connector.
The PCI-DIO24/LP has open locations where you can install a pull-up or pull-down resistor for each port. All
I/O bits are set to input mode on power up and reset.
The PCI-DIO24/LP board is completely plug-and-play, with no jumpers or switches to set. All board addresses
are set by your system's plug-and-play software.

Software features
For information on the features of InstaCal and the other software included with your PCI-DIO24/LP, refer tothe 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.

7Chapter 2

Installing the PCI-DIO24/LP
What comes with your PCI-DIO24/LP shipment?
As you unpack your board, make sure each of the items shown below is included.

Hardware

PCI-DIO24/LP

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/LP and information regarding installation of that software.
Please read this booklet completely before installing any software or hardware.

Optional components


Cables

C68MMS-x



Signal termination and conditioning accessories
MCC provides signal termination and conditioning boards that you can use with the PCI-DIO24/LP. Referto the "Field wiring, signal termination and conditioning" section on page 10 for a complete list ofcompatible accessory products.
8

PCI-DIO24/LP User's Guide

Installing the PCI-DIO24/LP

Unpacking the PCI-DIO24/LP
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PCI-DIO24/LP from its packaging, ground yourself using a wrist strap or bysimply 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 byphone, fax, or e-mail:

Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com

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-SoftwareQuick-Start.pdf.

Installing the PCI-DIO24/LP
The PCI-DIO24/LP is completely plug-and-play, with no switches or jumpers to set. Configuration is controlled
by your system's plug-and-play software. 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 installingthe software.
1.

Turn your computer off, open it up, and insert your board into an available low profile MD2 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 opens 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 are prompted for the disk
containing this file. The Measurement Computing Data Acquisition Software CD supplied with your board
contains this file. If required, insert the disk or 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 andload InstaCal.

Connecting the board for I/O operations
Connectors, cables – main I/O connector
The table below lists the board connectors, compatible cables, and compatible accessory products for the PCIDIO24/LP.
Board connectors, cables, and accessory equipment
I/O connector typeCompatible cableCompatible accessory products with the
C68MMS-x cable

SCSI type ultra micro DB68 VHDCI female
C68MMS-x, where x = 3 or 6 feet (Figure 1)
CIO-MINI68

9

PCI-DIO24/LP User's Guide

Installing the PCI-DIO24/LP

Pin out – main I/O connector
Main I/O connector pin out
Signal Name Pin
PC +5V
68
GND
67
n/c
66
GND
65
n/c
64
n/c
63
n/c
62
n/c
61
n/c
60
GND
59
GND
58
GND
57
GND
56
GND
55
GND
54
GND
53
GND
52
GND
51
GND
50
GND
49
GND
48
GND
47
GND
46
GND
45
GND
44
GND
43
GND
42
GND
41
GND
40
GND
39
GND
38
GND
37
GND
36
GND
35
PCI slot ↓

Pin
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

Signal Name
PC +5V
GND
n/c
GND
n/c
n/c
n/c
IRQ_INPUT
IRQ_ENABLE
n/c
Port C7Port C6Port C5Port C4Port C3
Port C2Port C1
Port C0Port B7
Port B6
Port B5
Port B4
Port B3
Port B2
Port B1
Port B0
Port A7
Port A6
Port A5Port A4
Port A3
Port A2
Port A1
Port A0

Cabling
The C68MMS-x cable is compatible with the PCI-DIO24/LP.

35

68

34

1

68

1

34

35

Figure 1. C68MMS-x cable

Field wiring, signal termination and conditioning
You can connect the PCI-DIO24/LP to the following screw terminal board using the C68MMS-x cable.


CIO-MINI68 – 68-pin screw terminal board. Details on this product is available on our web site atwww.mccdaq.com/products/screw_terminal_bnc.aspx.
10Chapter 3

Functional Details
The PCI-DIO24/LP board features the following:

82C55 digital I/O chip interfaced to the PCI bus. The I/O pins of an 82C55 are bi-directional CMOS TTLlevel.
24-bits of digital I/O
68-pin I/O connector

The 82C55 provides the 24-bit digital I/O channels into three eight-bit ports labeled Port A, Port B and Port C.
Port C is further divided into two four-bit ports—PORTCL and PORTCH. You can program each port for input
or output.

PCI-DIO24/LP block diagram
PCI-DIO24/LP functions are illustrated in the block diagram shown here.
IRQ_ENABLE
IRQ_INPUT

CONTROLLER FPGA and LOGIC
82C55

PORT B (7:0)
PORT CH (3:0)
PORT CL (3:0)

PORT A
PORT BPORT CH

Control

68-Pin I/O Connector

PORT A (7:0)

CONTROL
BUS

Control
Registers
IRQ_INPUT

PORT CL

Decode/Status

Interrupt
Control

IRQ_ENABLE

Bus
TimingLOCAL BUS

Boot
EEPROM+5V

PCI
CONTROLLER

BADR1
BADR2
Interrupt

PCI BUS (5V/3.3V, Universal 32-Bit, 33MHz)

Figure 2. PCI-DIO24/LP functional block diagram

For more information on digital signal connections
For general information about digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).
Caution! Do not connect high current/voltage devices directly to the PCI-DIO24/LP or you may damage theboard.
11

PCI-DIO24/LP User's Guide

Functional Details

Signal level control
All I/O bits are set to a high impedance input mode on power up and reset. To prevent unwanted signal levels,and to drive all outputs on the device you are controlling to a known state after power up or reset, install pull-up
or pull-down resistors.
A pull-up resistor pulls all digital pins up to +5 V (high logic level). A pull-down resistor pulls all digital pins
down to 0 V (low logic level).
The PCI-DIO24/LP has open locations where you can install a 2.2 K , eight-resistor single inline package(SIP) resistor network for each port. The SIP is made up of eight 2.2 K resistors. One side of each resistor isconnected to a single common point and brought out to a pin. The common line is marked with a dot or line at
one end of the SIP. The remaining resistor ends are brought out to the other eight pins (see Figure 3).
2.2 KOhm SIP
Dot(LO or HI)

I/O Lines

Figure 3. Eight-Resistor SIP Schematic

Each port provides 10 holes. Install an SIP on the board at the locations labeled PORT A, PORT B and PORT C(see Figure 4).

Figure 4. Pull-up/down resistor locations

The end labeled HI connects to +5 V. The end labeled LO connects to GND. The eight holes in the middle (n0 –n7) connect to the eight lines of the port (PORT A, PORT B, or PORT C). Figure 5 shows an SIP resistor
network installed in both pull-up and pull-down positions.
12

PCI-DIO24/LP User's Guide

Functional Details

2.2 K SIP
HI

COM

n6

User Connector
Digital I/O Lines

n7

n6

n4
n3
n2

n = A, B, or C

HI

n7

n5

DigitalI/O Port+5 VDC

Dot indicates thecommon line

n1

2.2 K SIP

User Connector
Digital I/O Lines+5 VDCn5

DigitalI/O Portn4n3n2n = A, B, or C

n1

n0

n0

LO
(GND)

LO
(GND)

COM

Dot indicates thecommon line
2.2 K SIP installed for pull-up

2.2 K SIP installed for pull-downFigure 5. Pull-up and pull-down resistor SIP schematic

To pull up the digital lines for a particular port, install the resistor with the common pin at the HI end. To pull
down the digital lines for a particular port, install the resistor with the common pin at the LO end. Wheninstalled, the SIP resistors establish either a high or low logic level for each port when the board is in input
mode.
Install MCC SIP packs
When installing pull-up and pull-down resistor SIP packs, we recommend using a 2.2 K, eight-resistor SIP(MCC part number SP-K2.29C).

13

Chapter 4

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Digital input/output
Table 1. Digital I/O specifications
Digital type
Number of I/O
Configuration

Input low voltage
Input high voltage
Output low voltage (IOL = 2.5 mA)
Output high voltage (IOH = -2.5 mA)
Absolute maximum input voltage
Power-up/reset state
Pull-up/pull-down resistors

82C55
24 (Port A0 through Port C7)
2 banks of 8 and 2 banks of 4 or
3 banks of 8 or
2 banks of 8 with handshake
0.8 V max
2.2 V min
0.5 V max
2.4 V min-0.5 V, +7 V
Input mode (high impedance)
Dual footprint allows pull-up or pull-down configuration.

Interrupts
Table 2. Interrupt specifications
Interrupts
Interrupt enable
Interrupt sources

INTA# - mapped to IRQn via PCI BIOS at boot-time
External (IRQ_ENABLE) active low, disabled by default through internal
resistor to TTL high and programmable through PLX9030
 External source (IRQ_INPUT)
 Polarity programmable through PLX9030
 Edge or level triggered programmable through PLX9030
 Assertion Time: 40 ns min

Power consumption
Table 3. Power consumption specifications+5 V operating+5 V available at I/O connector
Resettable fuse

240 mA typical, 350 mA max. Does not include power consumed through the
I/O connector.
300 mA max, protected with a resettable fuse
Raychem type miniSMDC110.
Hold current: 1.1 A max
Series resistance: 0.21 Ohms max.

Environmental
Table 4. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 °C-40 to 100 °C
0 to 95% non-condensing

14

PCI-DIO24/LP User's Guide

SpecificationsError! No text of specified style in document.

Mechanical
Table 5. Mechanical specifications
Card dimensions
Form factor

PCI low-profile MD2 length:131.8 mm (L) x 63.5 mm (W) x 18.4 mm (H)Universal PCI keying. Compatible with either 3.3 V or 5 V PCI signaling environments.

Connector and pin out
Table 6. Connector specifications
I/O connector typeCompatible cables
Compatible accessories

SCSI type ultra micro DB68 VHDCI female
MCC p/n C68MMS-x. x = 3 or 6 feet.
CIO-MINI68
CIO-MINI68/DST
Table 7. Connector pin out

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

Signal NamePort A0
Port A1
Port A2
Port A3
Port A4
Port A5Port A6
Port A7
Port B0
Port B1
Port B2
Port B3
Port B4
Port B5
Port B6
Port B7
Port C0Port C1
Port C2Port C3
Port C4Port C5Port C6Port C7n/c
IRQ_ENABLE
IRQ_INPUT
n/c
n/c
n/c
GND
n/c
GND
PC +5V

Pin
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

15

Signal Name
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
n/c
n/c
n/c
n/c
n/c
GND
n/c
GND
PC +5VDeclaration of Conformity
Manufacturer:
Address:

Category:

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USAElectrical equipment for measurement, control and laboratory use.

Measurement Computing Corporation declares under sole responsibility that the product

PCI-DIO24/LP
to which this declaration relates is in conformity with the relevant provisions of the following standards or otherdocuments:
EC EMC Directive 2004/108/EC: General Requirements, EN 61326-1:2006 (IEC 61326-1:2005).
Emissions:EN 55011 (2007) / CISPR 11(2003): Radiated emissions: Group 1, Class A
EN 55011 (2007) / CISPR 11(2003): Conducted emissions: Group 1, Class A

Immunity: EN 61326-1:2006, Table 3.







IEC 61000-4-2 (2001): Electrostatic Discharge immunity.
IEC 61000-4-3 (2002): Radiated Electromagnetic Field immunity.
IEC 61000-4-4 (2004): Electric Fast Transient Burst Immunity.
IEC 61000-4-5 (2001): Surge Immunity.
IEC 61000-4-6 (2003): Radio Frequency Common Mode Immunity.
IEC 61000-4-11 (2004): Voltage Interrupts.

To maintain compliance to the standards of this declaration, the following conditions must be met.






The host computer, peripheral equipment, power sources, and expansion hardware must be CE
compliant.
All I/O cables must be shielded, with the shields connected to ground.
I/O cables must be less than 3 meters (9.75 feet) in length.
The host computer must be properly grounded.
Equipment must be operated in a controlled electromagnetic environment as defined by Standards EN
61326-1:2006, or IEC 61326-1:2005.

Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
March, 2009. Test records are outlined in Chomerics Test Report #EMI5299.09.
We hereby declare that the equipment specified conforms to the above Directives and Standards.

Carl Haapaoja, Director of Quality Assurance

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com