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

3
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.

4
Trademark and Copyright Information
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Measurement Computing Corporation.
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.
Life support devices/systems are devices or systems which, 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 in injury.
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.

5
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

6
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.

8
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
9
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
10
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

PCI-DIO24 User's Guide Installing the PCI-DIO24
11
Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal
Connections. This document is available on our web site at www.mccdaq.com/signals/signals.pdf.
Cabling
20
1
37
19
20
1
37
19
The red stripe
identifies pin # 1
Figure 2. C37FF-x cable
20
1
37
19
20
1
37
19
Figure 3. C37FFS-x cable
Field wiring and signal termination
You can connect the PCI-DIO24 to the following termination boards using the C37FF-x or C37FFS-x cable:
SCB-37 —37-conductor, shielded signal connection/screw terminal box that provides two independent 37-
pin connections.
CIO-MINI37 —4 x 4, 37-pin screw terminal board.
CIO-MINI37-VERT —37-pin screw terminal accessory with vertical 37-pin male D connector.
CIO-SPADE50 —16" X 4" termination panel which mates with both 37-pin and 50-pin connectors.
Details on these products are available on our web site at
www.mccdaq.com/products/screw_terminal_bnc.aspx.
The following relay racks and accessory boards can be used with the PCI-DIO24:
SSR-RACK24 —24-position solid state relay rack..
SSR-RACK08 —Eight-channel solid state relay rack.
CIO-ERB08 —Eight-channel electromechanical relay accessory for digital I/O boards.
CIO-SERB08 —Eight Form C and ten socketed relay accessory for digital I/O boards.
CIO-ERB24 —24-channel electromechanical relay accessory for digital I/O boards.
Details on these products are available on our web site at www.mccdaq.com/products/signal_conditioning.aspx.

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Chapter 3
Functional Details
PCI-DIO24 block diagram
PCI-DIO24 functions are illustrated in the block diagram shown here.
PCI
Controller
BADR1
Boot
EEPROM
Control
Registers
Decode/Status
Bus
Timing
Controller FPGA and logic
Local Bus
PCI BUS (5V, 32-bit, 33 MHZ)
Control
Bus
Interrupt
Control
+5V
+12V
-12V
BADR2
Interrupt
PORT A
Control
PORT A (7:0) 8255 DIO
PORT B (7:0)
PORT CH (3:0) PORT B
PORT CH
PORT CL
PORT CL (3:0) IRQ INPUT
IRQ ENABLE
37-Pin I/O Connector
Figure 4. Functional block diagram
DIO signals
All digital outputs and inputs on the PCI-DIO24 are CMOS TTL. Voltages and currents associated with
external devices are usually far greater than can be supplied from a PCI-DIO24.
Caution! Direct connections to high-current/high voltage devices will damage the board.
The 82C55 digital I/O chip initializes all ports as inputs on power-up and reset. The state of the digital I/O lines
is not defined as either logic high or logic low when in input mode. Input devices connected to the PCI-DIO24
board may detect either a high or a low, and therefore may be turned off or on at power-up.

PCI-DIO24 User's Guide Functional Details
13
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 inputs 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 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 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 5).
2.2KOhm SIP
Dot
(LO or HI)
I/O Lines
Figure 5. Eight-resistor SIP schematic
Install the SIP on the PCI-DIO24 board at the locations labeled PORT A, PORT B and PORT C (adjacent to
the 37-pin connector). Figure 6 shows a schematic of an SIP installed in both the pull-up and pull-down
positions.
2.2 K SIP installed for pull-up
2.2 K SIP Dot indicates the
common line
+5 VDC
HI
LO
(GND)
n7
User Connector Digital I/O Lines
n5
n4
n3
n2
n1
n0
n6
COM
Digital
I/O Port
n = A, B, or C
+5 VDC
2.2 K SIP installed for pull-down
2.2 K SIP
Dot indicates the
common line
HI
LO
(GND)
n7
User Connector
Digital I/O Lines
n5
n4
n3
n2
n1
n0
n6
COM
Digital
I/O Port
n = A, B, or C
Figure 6. Pull-up and pull-down resistor SIP schematic

PCI-DIO24 User's Guide Functional Details
14
When installed, the SIP establishes either a high or low logic level at each of the eight I/O lines on the port. At
each board location, A, B, and C, there are 10 holes in a line. The hole on one end is marked "HI" and is
connected to +5V. The other end is marked "LO" and is connected to GND. The eight holes in the middle
connect to eight lines of the port, A, B or C.
To pull-up lines, orient the SIP with the common pin (dot) toward the HI end; to pull-down, install the resistor
with the common pin in the LO hole.
Note:
We recommend using 2.2K SIPs (MCC part number SP-K2.29C). Use a different value only if necessary.

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Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Power consumption
Table 1. Power consumption specifications
+5V operating
240 typical, 350 max
Digital input / output
Table 2. Digital input / output specifications
Digital type
82C55
Configuration
2 banks of 8, 2 banks of 4, programmable by bank as input or output
Number of channels
24 I/O
Output high
3.7 volts min @ -2.5 mA
Output low
0.4 volts max @ 2.5 mA
Input high
2.2 volts min, 5.3 volts absolute max
Input low
0.8 volts max, -0.3 volts absolute min
Power-up / reset state
Input mode (high impedance)
Interrupts
INTA# - mapped to IRQn via PCI BIOS at boot-time
Interrupt enable
External (IR ENABLE, active low, disabled by default through internal resistor to
TTL high) and programmable through PCI9052;
0 = disabled, 1 = enabled (default)
Interrupt sources
External source (IR INPUT), polarity programmable through PCI9052;
1 = active high, 0 = active low (default)
Environmental
Table 3. Environmental specifications
Operating temperature range
0 to 50 °C
Storage temperature range
-20 to 70 °C
Humidity
0 to 90% non-condensing

PCI-DIO24 User's Guide Specifications
16
Main connector and pin out
Table 4. Board connector, cables, and accessory equipment
Connector type
37-pin D-type
Compatible cables
C37FF-x unshielded ribbon cable. x = length in feet.
C37FFS-x cable shielded round cable. x = length in feet.
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
Table 5. Connector pin out
Pin
Signal Name
Pin
Signal Name
1
IRQ INPUT
20
+5V
2
IRQ ENABLE
21
GND
3
Port B7
22
Port C7
4
Port B6
23
Port C6
5
Port B5
24
Port C5
6
Port B4
25
Port C4
7
Port B3
26
Port C3
8
Port B2
27
Port C2
9
Port B1
28
Port C1
10
Port B0
29
Port C0
11
GND
30
Port A7
12
OPEN
31
Port A6
13
GND
32
Port A5
14
-12V
33
Port A4
15
GND
34
Port A3
16
+12V
35
Port A2
17
GND
36
Port A1
18
+5V
37
Port A0
19
GND

Declaration of Conformity
Manufacturer: Measurement Computing Corporation
Address: 10 Commerce Way
Suite 1008
Norton, MA 02766
USA
Category: Electrical equipment for measurement, control and laboratory use.
Measurement Computing Corporation declares under sole responsibility that the product
PCI-DIO24
to which this declaration relates is in conformity with the relevant provisions of the following standards or
other documents:
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
[phone]
Fax: [phone]
E-mail: [email protected]
www.mccdaq.com