1

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

Document Revision 3A, 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_S.doc

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

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

Unpacking the hardware ..................................................................................................................................... 9
Installing the software ........................................................................................................................................ 9
Installing the hardware ....................................................................................................................................... 9Connecting the board for I/O operations .......................................................................................................... 10
Connectors, cables – main I/O connector.........................................................................................................................10
Pin out – main I/O connector ...........................................................................................................................................10
Cables ..............................................................................................................................................................................11
Field wiring, signal termination and conditioning ...........................................................................................................11
Chapter 3

Functional Details ...............................................................................................................................12Signal level control ........................................................................................................................................... 13
Chapter 4

Specifications ......................................................................................................................................15
Digital input/output........................................................................................................................................... 15
Interrupts........................................................................................................................................................... 15Power consumption .......................................................................................................................................... 15
Environmental .................................................................................................................................................. 15
Mechanical ....................................................................................................................................................... 16
I/O pins protection ............................................................................................................................................ 16
Connector and pin out....................................................................................................................................... 16
Declaration of Conformity ..................................................................................................................175

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/S digital I/O board. This user's guidealso 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/S
Overview: PCI-DIO24/S features
This manual explains how to install, configure and use the PCI-DIO24/S digital I/O board. You can use thisboard in a variety of digital applications to control logic devices such as switches, gauges, relays, pumps, andsensors.
The PCI-DIO24/S is a 24-bit, TTL-compatible digital I/O board. Digital I/O lines are accessed through a 37-pin
connector. Digital I/O and interrupt pins are protected from electrostatic discharges of up to ±15 kV (air) and ±8
kV (contact).
An on-board, industry standard 82C55 programmable peripheral interface chip provides the 24 discrete digital
I/O lines in three eight-bit ports (Port A, Port B, and Port C) for each board. 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. The PCI-DIO24/S supports 5V or 3.3V TTL/CMOS I/O signaling.
The PCI-DIO24/S 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/S 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/S, 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 http://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/S
What comes with your PCI-DIO24/S shipment?
As you unpack your board, make sure each of the items shown below is included.

Hardware

PCI-DIO24/S

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/S 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.


CablesC37FF-x

C37FFS-x

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PCI-DIO24/S User's GuideInstalling the PCI-DIO24/S

Signal termination and conditioning accessories
MCC provides signal termination and conditioning boards that you can use with the PCI-DIO24/S. Refer tothe "Field wiring, signal termination and conditioning" section on page 11 for a complete list of compatible
accessory products.

Unpacking the hardware
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the PCI-DIO24/S 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
Install the software included with your board before you install the hardware. Installing the software firstensures that the information required for proper board detection is installed and available at boot up.
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 hardware
The PCI-DIO24/S 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 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 theinformation 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 you 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.

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PCI-DIO24/S User's Guide

Installing the PCI-DIO24/S

Connecting the board for I/O operations
Connectors, cables – main I/O connector
Table 2-1 lists the board connectors, compatible cables, and compatible accessory products for the PCIDIO24/S.
Table 2-1. Board connectors, cables, and accessory equipment
I/O connector typeCompatible cableCompatible accessory products (with the
C37FFS-x and C37FF-x cables)

CONN37DR male
C37FFS-x, where x =5 or 10 feet (Figure 2)
C37FF-x, where x = length in feet (Figure 3)
CIO-MINI37, CIO-MINI37/DST
SCB-37
CIO-ERB24
CIO-ERB08
SSR-RACK24
SSR-RACK08

Pin out – main I/O connector+5V
GND
PORT C7
PORT C6PORT C5PORT C4PORT C3PORT C2PORT C1PORT C0
PORT A7
PORT A6
PORT A5
PORT A4PORT A3
PORT A2
PORT A1
PORT A0

1

20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

IRQ_INPUT
IRQ_Enable
Port B7
Port B6
Port B5
Port B4
Port B3
Port B2
Port B1
Port B0
GND
N/C
GND
-12V
GND
+12V
GND
+5V
GND

Figure 1. PCI-DIO24/S I/O connector pin out

10PCI-DIO24/S User's Guide

Installing the PCI-DIO24/S

Cables
19

1

1

19

20

37

20

37

Figure 2. C37FFS-x cable

The red stripe
identifies pin # 1

1

1

20

20

37

37
19

19

Figure 3. C37FF-x cable

Field wiring, signal termination and conditioning
You can connect the PCI-DIO24/S to the following accessory boards using the C37FF-x or C37FFS-x cable:


CIO-MINI37 — Universal screw terminal board, 37-pin.
SCB-37 — Signal connection box, 37-conductor, shielded.

Details on these products are available on our web site at www.mccdaq.com/products/screw_terminal_bnc.aspx.
The following relay racks can be used with the PCI-DIO24/S:
CIO-ERB24 — 24 Form C, 6A relays.
CIO-ERB08 — Eight Form C, 6A relays.
SSR-RACK24 — 24-channel solid state I/O module rack.
SSR-RACK08 — 24-channel solid state I/O module rack.

Details on these products are available on our web site at www.mccdaq.com/products/signal_conditioning.aspx.

11

Chapter 3

Functional Details
The PCI-DIO24/S 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
37-pin I/O connector
Digital I/O and interrupt pins are protected from electrostatic discharges of up to ±15 kV (air) and±8 kV (contact).

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. You can program each port for input or output.
PCI-DIO24/S functions are illustrated in the block diagram shown here.
IRQ_ENABLE
IRQ_INPUT

x8

Controller FPGA and Logic
x8

PORT A (7:0)

82C55
ControlBus

PORT A

PORT B (7:0)

PORT BPORT CH (3:0)

Control
Registers

Control

IRQ_INPUT

PORT CHPORT CL (3:0)

PORT CL

Decode/Status

Interrupt
Control

IRQ_ENABLE

x4
x4

Bus
TimingLOCAL BUS

Boot
EEPROM+5V

37-pinI/O connector

BADR1
PCI
CONTROLLER BADR2Interrupt

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

Figure 4. PCI-DIO24/S 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/S or you may damage theboard.

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PCI-DIO24/S 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).
Each board 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 is connected to asingle 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 5).
2.2 KOhm SIP
Dot(LO or HI)

I/O Lines

Figure 5. 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 (seeFigure 6).
Pull-up / pull-downresistor locations

Figure 6. 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, B, or C). Figure 7 shows an SIP resistor network installed inboth pull-up and pull-down positions.

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PCI-DIO24/S 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 7. 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).

14

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, +6 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 throughthe 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

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PCI-DIO24/S User's Guide

Specifications

Mechanical
Table 5. Mechanical specifications
Card dimensions

PCI length:131.8 mm (L) x 106.7 mm (W) x 18.4 mm (H)Universal PCI keying. Compatible with either 3.3 V or 5 V PCI signaling
environments.

Form factor

I/O pins protection
Table 6. Static discharge protection specifications
DIO lines protected

Port A[7:0], Port B[7:0], Port C[7:0], IRQIN, IRQEN

On board chip

SEMTECH SMDA05C-8, SD05

ESD protection level±15 kV (air), ±8 kV (contact)

DIO maximum voltage

6V

Connector and pin out
Table 7. Connector specifications
I/O connector typeCompatible cables
Compatible accessories

CONN37DR male
C37FF-x, C37FFS-x, x = Length in feet.
CIO-MINI37, CIO-MINI37/DST
SCB-37
CIO-ERB24
CIO-ERB08
SSR-RACK24
SSR-RACK08
Table 8. Connector pin out

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Signal Name
IRQ_INPUT
IRQ_ENABLE
Port B7
Port B6
Port B5
Port B4
Port B3
Port B2
Port B1
Port B0
GND
N/C
GND
-12V
GND
+12V
GND
+5V
GND

Pin
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

Signal Name
+5V
GND
Port C7Port C6Port C5Port C4Port C3
Port C2Port C1
Port C0Port A7
Port A6
Port A5Port A4
Port A3
Port A2
Port A1
Port A016

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/S
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