PCI-DIO24H

24-bit, High-Output Drive, Digital I/O

User's Guide

January 2019. Rev 4© Measurement Computing Corporation

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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.

PCI-DIO24H2

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-DIO24H ................................................................................................................. 5
Functional block diagram ................................................................................................................................... 5
Chapter 2

Installing the PCI-DIO24H ..................................................................................................................... 6Unpacking........................................................................................................................................................... 6
Installing the software ........................................................................................................................................ 6
Installing the hardware ....................................................................................................................................... 6
Configuring the hardware ................................................................................................................................... 6
Signal connections .............................................................................................................................................. 7
Connector pinout............................................................................................................................................................... 7Cabling.............................................................................................................................................................................. 8
Field wiring and signal termination .................................................................................................................................. 8

Chapter 3

Functional Details ................................................................................................................................. 9
DIO signals ......................................................................................................................................................... 9Signal level control ............................................................................................................................................. 9
Chapter 4

Specifications ...................................................................................................................................... 11Power consumption .......................................................................................................................................... 11
Digital I/O ......................................................................................................................................................... 11
Environmental .................................................................................................................................................. 11
Signal connector ............................................................................................................................................... 12
Declaration of Conformity ................................................................................................................ 13

3

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide describes the Measurement Computing PCI-DIO24H 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 arereading.
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-DIO24H 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: techsupport@mccdaq.com
Phone: 508-946-5100 and follow the instructions for reaching Tech Support

For international customers, contact your local distributor. Refer to the International Distributors section on ourwebsite 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), orsearch 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 atwww.mccdaq.com/registermaps/RegMapPCI-DIO24X.pdf.

4Chapter 1

Introducing the PCI-DIO24HThis manual explains how to install and use the PCI-DIO24H board. The PCI-DIO24H is a high output drive,logic-level digital I/O board designed for the PCI-bus.
The PCI-DIO24H provides 24-bits of digital I/O in three eight-bit ports (Port A, Port B, and Port C) based on an
82C55 mode 0 emulation. 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 digital inputs are LSTTL. The output signals are buffered high output drive TTL. The digital output drivers
are 74S244 chips that can sink 64 mA and source 15 mA. The input buffers are 74LS373 chips and havestandard high input impedance of the 74LS series devices.
All 24 I/O lines are accessible through the board's 37-pin connector.
82C55 Mode 0 programming supported
The PCI-DIO24H supports 82C55 Mode 0 programming only.

Functional block diagram

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

High Drive
82C55 Mode 0 Emulation
PORT A
PORT BPORT CHControl

37-Pin I/O ConnectorPCI-DIO24H functions are illustrated in the block diagram shown here.

Controller FPGA and logic
ControlBusControlRegisters
IRQ INPUT

PORT CL

Decode/Status

Interrupt
Control+5VBus
Timing+12V-12V

Local BusBoot
EEPROM

PCI
Controller

BADR1
BADR2
Interrupt

PCI BUS (5V, 32-bit, 33 MHZ)

Figure 1. Functional block diagram

5

IRQ ENABLE

Chapter 2

Installing the PCI-DIO24H
UnpackingAs with any electronic device, you should take care while handling to avoid damage from staticelectricity. 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-DIO24H product page on our website for information about
the software supported by the PCI-DIO24H.
Install the software before you install your device
The driver needed to run the PCI-DIO24H is installed with the software. Therefore, you need to install thesoftware package you plan to use before you install the hardware.

Installing the hardware
The PCI-DIO24H board is completely plug-and-play, with no switches or jumpers to set. Configuration iscontrolled 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 theMCC 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-DIO24H are software controlled.

6

PCI-DIO24H User's Guide

Installing the PCI-DIO24H

Signal connections
The table below lists the board connector type, applicable cables, and compatible products for the PCI-DIO24H.
Board connectors, cables, and accessory equipment
Connector typeCompatible cables
Compatible accessory products (with theC37FF-x or C37FFS-x cable)

37-pin D-type
 C37FF-x unshielded ribbon cable. x = length in feet. (see Figure 3)
 C37FFS-x shielded round cable. x = length in feet. (see Figure 4)
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 theexpansion backplate. The signals available are direct connections to the digital I/O chips as well as thecomputer's internal power supplies. The pin out is identical to the CIO-DIO24, except that –5 VDC is notbrought out. The PCI-DIO24H board's I/O connector is shown in Figure 2.

Figure 2. PCI-DIO24H board connector pinout

Information on signal connections
General information regarding signal connection and configuration is available in the Guide to DAQ Signal
Connections on our website at www.mccdaq.com/support/DAQ-Signal-Connections.aspx.

7

PCI-DIO24H User's Guide

Installing the PCI-DIO24HCabling
The red stripe
identifies pin # 1

11202037

37

1919

Figure 3. C37FF-x cable11912037

192037

Figure 4. C37FFS-x cable

Field wiring and signal termination
You can connect the PCI-DIO24H 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 37pin 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-DIO24H: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.

8

Chapter 3

Functional Details
DIO signals
The PCI-DIO24H signals are buffered (high output drive) TTL. Voltages and currents associated with external
devices are usually far greater than can be supplied from a PCI-DIO24H.
Caution! Direct connections to high-current/high voltage devices will damage the board.
The emulated 82C55 mode 0 circuit 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 thePCI-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-DIO24H 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 KΩ 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 5).
2.2KOhm SIP
Dot(LO or HI)

I/O Lines

Figure 5. Eight-resistor SIP schematic

Install the SIP on the PCI-DIO24H board at the locations labeled PORT A, PORT B and PORT C (adjacent tothe 37-pin connector). Figure 6 shows a schematic of an SIP installed in both the pull-up and pull-downpositions.

9PCI-DIO24H User's Guide

Functional Details

HIHI
n6n4n3n1

User Connector
Digital I/O Linesn7n6n2n = A, B, or C

COMn7n5Digital
I/O Port+5 VDC

Dot indicates thecommon line

2.2 K SIP

2.2 K SIP

User Connector
Digital I/O Lines+5 VDCn5Digital
I/O Port

n4n3n2n = A, B, or C

n1n0n0LO(GND)

LO(GND)COM

Dot indicates thecommon line

2.2 K SIP installed for pull-down

2.2 K SIP installed for pull-up

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 isconnected 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 2.2KΩ SIPs (MCC part number SP-K2.29C). Use a different value only if necessary.

10Chapter 4Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.

Power consumption
Table 1. Power consumption specifications
Parameter+5V operating

Specification
625 mA typical, 960 mA max

Digital I/O
Table 2. DIO specifications
Parameter
Digital typeOutputInput
Configuration
Number of channels
Output highOutput low
Input highInput low
Power-up / reset state
Interrupts
Interrupt enable

Interrupt sources

Specification8255 mode 0 emulation
74S24474LS373
2 banks of 8, 2 banks of 4, programmable by bank as input or output
24 I/O
2.4 volts min @ –15 mA
0.5 volts max @ 64 mA
2.0 volts min, 7 volts absolute max
0.8 volts max, –0.5 volts absolute min
Input mode (high impedance)
INTA# - mapped to IRQn via PCI BIOS at boot-time
External (IR ENABLE, active low, disabled by default through internal resistor toTTL high) and programmable through PCI9052:
0 = disabled
1 = enabled (default)
External source (IR INPUT), polarity programmable through PCI9052:
1 = active high0 = active low (default)

Environmental
Table 3. Environmental specifications
Parameter
Operating temperature range
Storage temperature range
Humidity

Specification
0 to 50 °C–20 to 70 °C
0 to 90% non-condensing

11

PCI-DIO24H User's Guide

Specifications

Signal connector
Table 4. Signal connector specifications
Parameter
Connector typeCompatible cables
Compatible accessory products (with theC37FF-x or C37FFS-x cable)

Specification
37-pin D-type
C37FF-x unshielded ribbon cable. x = length in feet.
C37FFS-x shielded round cable. x = length in feet.
SCB-37
CIO-MINI37
CIO-MINI37-VERT
CIO-ERB08
CIO-SERB08
CIO-ERB24
CIO-SPADE50
SSR-RACK08
SSR-RACK24
Table 5. Connector pinout

Pin
12345678910111213141516171819Signal NameIRQ INPUT
IRQ ENABLE
Port B7
Port B6
Port B5
Port B4
Port B3
Port B2
Port B1
Port B0
GND
OPEN
GND
-12V
GND
+12V
GND
+5V
GND

Pin
20
2122232425262728293031323334353637Signal 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 A012

Declaration of Conformity
Manufacturer:
Address:
Category:

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

Measurement Computing Corporation declares under sole responsibility that the product

PCI-DIO24H
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 AImmunity: 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 CEcompliant.
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 inMarch, 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
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com

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