Measurement Computing PCI-DIO24 User manual

PCI-DIO24
24-bit, Logic-level Digital I/O
User's Guide
January 2019. Rev 4
© Measurement Computing Corporation

2
HM PCI-DIO24.docx
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Other product and company names mentioned herein are trademarks or trade names of their respective
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© 2019 Measurement Computing Corporation. All rights reserved. No part of this publication may be
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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 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 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.

3
Table of Contents
Preface
About this User's Guide .......................................................................................................................4
What you will learn from this user's guide .........................................................................................................4
Conventions in this user's guide .........................................................................................................................4
Where to find more information.........................................................................................................................4
Register map ..................................................................................................................................................................... 4
Chapter 1
Introducing the PCI-DIO24 ...................................................................................................................5
Functional block diagram ...................................................................................................................................5
Chapter 2
Installing the PCI-DIO24 .......................................................................................................................6
Unpacking...........................................................................................................................................................6
Installing the software ........................................................................................................................................6
Installing the hardware .......................................................................................................................................6
Configuring the hardware ...................................................................................................................................6
Signal connections..............................................................................................................................................7
Connector pinout............................................................................................................................................................... 7
Cabling.............................................................................................................................................................................. 8
Field wiring and signal termination .................................................................................................................................. 8
Chapter 3
Functional Details .................................................................................................................................9
DIO signals .........................................................................................................................................................9
Signal level control.............................................................................................................................................9
Chapter 4
Specifications......................................................................................................................................11
Power consumption ..........................................................................................................................................11
Digital I/O.........................................................................................................................................................11
Environmental ..................................................................................................................................................11
Signal connector ...............................................................................................................................................12
EU Declaration of Conformity ............................................................................................................13

4
Preface
About this User's Guide
What you will learn from this user's guide
This user's guide describes the Measurement Computing PCI-DIO24 data acquisition device and lists device
specifications.
Conventions in this user's guide
For more information
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.
Bold text is used for the names of objects on a screen, such as buttons, text boxes, and checkboxes.
Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.
Where to find more information
Additional information about the PCI-DIO24 is available on our website at www.mccdaq.com. You can also
contact Measurement Computing Corporation by phone, fax, or email with specific questions.
Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: [e-mail]
Phone: [phone] and follow the instructions for reaching Tech Support
For international customers, contact your local distributor. Refer to the International Distributors section on our
website at www.mccdaq.com/International.
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.
Register map
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.

5
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.
Functional block diagram
PCI-DIO24 functions are illustrated in the block diagram shown here.
Figure 1. Functional block diagram
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

6
Chapter 2
Installing the PCI-DIO24
Unpacking
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the device 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.
Contact us immediately if any components are missing or damaged.
Installing the software
Refer to the MCC DAQ Quick Start and the PCI-DIO24 product page on our website for information about the
software that supports the device.
Install the software before you install your device
The driver needed to run the PCI-DIO24 is installed with the software. Therefore, you need to install the
software package you plan to use before you install the hardware.
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. Perform the following procedure to install your board.
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.
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.
When connected for the first time, a Found New Hardware dialog opens when the operating system detects
the device. When the dialog closes, the installation is complete. If you have not installed the MCC DAQ
software, cancel the dialog and install it now.
3. To test your installation and configure your board, run the InstaCal utility installed with MCC DAQ
software. Refer to the Quick Start Guide 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
7
Signal connections
The table below lists board connectors, applicable cables, and 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 3)
C37FFS-x cable shielded round cable. x = length in feet. (see Figure 4)
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
Connector pinout
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 pinout 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 2.
Figure 2. Connector pinout
Information on signal connections
General information regarding signal connection and configuration is available in the Guide to DAQ Signal
Connectionson our website at www.mccdaq.com/support/DAQ-Signal-Connections.aspx.

PCI-DIO24 User's Guide Installing the PCI-DIO24
8
Cabling
Figure 3. C37FF-x cable
Figure 4. 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 website.
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 website.
20
1
37
19
20
1
37
19
The red stripe
identifies pin # 1
20
1
37
19
20
1
37
19

9
Chapter 3
Functional Details
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.
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 KΩ, eight-resistor single inline package (SIP)
resistor network for each port. The SIP is made up of eight 2.2 KΩresistors. 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).
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).
2.2KOhm SIP
Dot
(LO or HI)
I/O Lines

PCI-DIO24 User's Guide Functional Details
10
Figure 6 shows a schematic of an SIP installed in both the pull-up and pull-down positions.
Figure 6. Pull-up and pull-down resistor SIP schematic
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 2.2 KΩSIPs (MCC part number SP-K2.29C). Use a different value only if necessary.
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

11
Chapter 4
Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Power consumption
Table 1. Power consumption specifications
+5V operating
240 typical, 350 max
Digital I/O
Table 2. DIO specifications
Digital type
82C55
Configuration
Two banks of 8, two 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 °C to 50 °C
Storage temperature range
–20 °C to 70 °C
Humidity
0 to 90% non-condensing

PCI-DIO24 User's Guide Specifications
12
Signal connector
Table 4. Signal connector specifications
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 pinout
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

EU Declaration of Conformity
According to ISO/IEC 17050-1:2010
Manufacturer: Measurement Computing Corporation
Address: 10 Commerce Way
Norton, MA 02766
USA
Product Category: Electrical equipment for measurement, control and laboratory use.
Date and Place of Issue: December 4, 2017, Norton, Massachusetts USA
Test Report Number: EMI5299.09
Measurement Computing Corporation declares under sole responsibility that the product
PCI-DIO24
is in conformity with the relevant Union Harmonization Legislation and complies with the essential
requirements of the following applicable European Directives:
Electromagnetic Compatibility (EMC) Directive 2014/30/EU
Low Voltage Directive 2014/35/EU
RoHS Directive 2011/65/EU
Conformity is assessed in accordance to the following standards:
EMC:
Emissions:
EN 61326-1:2013 (IEC 61326-1:2012), Class A
EN 55011: 2009 + A1:2010 (IEC CISPR 11:2009 + A1:2010), Group 1, Class A
Immunity:
EN 61326-1:2013 (IEC 61326-1:2012), Controlled EM Environments
EN 61000-4-2:2008 (IEC 61000-4-2:2008)
EN 61000-4-3 :2010 (IEC61000-4-3:2010)
EN 61000-4-4 :2012 (IEC61000-4-4:2012)
EN 61000-4-5 :2014 (IEC61000-4-5:2014)
EN 61000-4-6 :2013 (IEC61000-4-6:2013)
EN 61000-4-11:2004 (IEC61000-4-11:2004)
Safety:
EN 61010-1:2010 (IEC 61010-1:2010)
Environmental Affairs:
Articles manufactured on or after the Date of Issue of this Declaration of Conformity do not contain any of the
restricted substances in concentrations/applications not permitted by the RoHS Directive.
Carl Haapaoja, Director of Quality Assurance

Measurement Computing Corporation NI Hungary Kft
10 Commerce Way H-4031 Debrecen, Hátar út 1/A, Hungary
Norton, Massachusetts 02766 Phone: [phone]
[phone] Fax: [phone]
Fax: [phone] http://hungary.ni.com/debrecen
E-mail: [e-mail]
www.mccdaq.com