Measurement Computing PCI-DIO24/LP User manual

PCI-DIO24/LP
Digital Input/Output
User's Guide
Document Revision 7, May, 2009
© Copyright 2009, Measurement Computing Corporation

3
HM PCI-DIO24_LP.doc
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the protection of the most comprehensive warranties and unmatched phone tech support. It’s the embodiment of our mission:
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PCI-DIO24/LP User's Guide
4
Trademark and Copyright Information
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Information furnished by Measurement Computing Corporation is believed to be accurate and reliable. However, no
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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/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..............................................................................................................................9
Connecting the board for I/O operations ............................................................................................................9
Connectors, 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...........................................................................................................................................14
Interrupts...........................................................................................................................................................14
Power consumption ..........................................................................................................................................14
Environmental ..................................................................................................................................................14
Mechanical .......................................................................................................................................................15
Connector and pin out.......................................................................................................................................15
Declaration of Conformity..................................................................................................................16

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/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 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.

7
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 of
digital 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 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/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. Refer
to the "Field wiring, signal termination and conditioning" section on page 10 for a complete list of
compatible accessory products.

PCI-DIO24/LP User's Guide Installing the PCI-DIO24/LP
9
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 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: [e-mail]
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 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 installing
the 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 and
load 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 PCI-
DIO24/LP.
Board connectors, cables, and accessory equipment
I/O connector type
SCSI type ultra micro DB68 VHDCI female
Compatible cable
C68MMS-x, where x = 3 or 6 feet (Figure 1)
Compatible accessory products with the
C68MMS-x cable
CIO-MINI68

PCI-DIO24/LP User's Guide Installing the PCI-DIO24/LP
10
Pin out –main I/O connector
Main I/O connector pin out
Signal Name
Pin
Pin
Signal Name
PC +5V
68
34
PC +5V
GND
67
33
GND
n/c
66
32
n/c
GND
65
31
GND
n/c
64
30
n/c
n/c
63
29
n/c
n/c
62
28
n/c
n/c
61
27
IRQ_INPUT
n/c
60
26
IRQ_ENABLE
GND
59
25
n/c
GND
58
24
Port C7
GND
57
23
Port C6
GND
56
22
Port C5
GND
55
21
Port C4
GND
54
20
Port C3
GND
53
19
Port C2
GND
52
18
Port C1
GND
51
17
Port C0
GND
50
16
Port B7
GND
49
15
Port B6
GND
48
14
Port B5
GND
47
13
Port B4
GND
46
12
Port B3
GND
45
11
Port B2
GND
44
10
Port B1
GND
43
9
Port B0
GND
42
8
Port A7
GND
41
7
Port A6
GND
40
6
Port A5
GND
39
5
Port A4
GND
38
4
Port A3
GND
37
3
Port A2
GND
36
2
Port A1
GND
35
1
Port A0
PCI slot ↓
Cabling
The C68MMS-xcable is compatible with the PCI-DIO24/LP.
68
34
35
1
35
1
68
34
Figure 1. C68MMS-xcable
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 at
www.mccdaq.com/products/screw_terminal_bnc.aspx.

11
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 TTL
level.
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.
PCI
CONTROLLER
BADR1
Boot
EEPROM
Control
Registers
Decode/Status
Bus
Timing
CONTROLLER FPGA and LOGIC
LOCAL BUS
PCI BUS (5V/3.3V, Universal 32-Bit, 33MHz)
CONTROL
BUS
PORT A
Control
PORT A (7:0) 82C55
Interrupt
Control
+5V
IRQ_INPUT
BADR2
Interrupt
IRQ_ENABLE
68-Pin I/O Connector
IRQ_INPUT
IRQ_ENABLE
PORT B (7:0)
PORT CH (3:0)
PORT B
PORT CH
PORT CL
PORT CL (3:0)
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 the
board.

PCI-DIO24/LP User's Guide Functional Details
12
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 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 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.

PCI-DIO24/LP User's Guide Functional Details
13
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 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. When
installed, 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
82C55
Number of I/O
24 (Port A0 through Port C7)
Configuration
2 banks of 8 and 2 banks of 4 or
3 banks of 8 or
2 banks of 8 with handshake
Input low voltage
0.8 V max
Input high voltage
2.2 V min
Output low voltage (IOL = 2.5 mA)
0.5 V max
Output high voltage (IOH = -2.5 mA)
2.4 V min
Absolute maximum input voltage
-0.5 V, +7 V
Power-up/reset state
Input mode (high impedance)
Pull-up/pull-down resistors
Dual footprint allows pull-up or pull-down configuration.
Interrupts
Table 2. Interrupt specifications
Interrupts
INTA# - mapped to IRQnvia PCI BIOS at boot-time
Interrupt enable
External (IRQ_ENABLE) active low, disabled by default through internal
resistor to TTL high and programmable through PLX9030
Interrupt sources
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
240 mA typical, 350 mA max. Does not include power consumed through the
I/O connector.
+5 V available at I/O connector
300 mA max, protected with a resettable fuse
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
0 to 70 °C
Storage temperature range
-40 to 100 °C
Humidity
0 to 95% non-condensing

PCI-DIO24/LP User's Guide SpecificationsError! No text of specified style in document.
15
Mechanical
Table 5. Mechanical specifications
Card dimensions
PCI low-profile MD2 length:
131.8 mm (L) x 63.5 mm (W) x 18.4 mm (H)
Form factor
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 type
SCSI type ultra micro DB68 VHDCI female
Compatible cables
MCC p/n C68MMS-x. x = 3 or 6 feet.
Compatible accessories
CIO-MINI68
CIO-MINI68/DST
Table 7. Connector pin out
Pin
Signal Name
Pin
Signal Name
1
Port A0
35
GND
2
Port A1
36
GND
3
Port A2
37
GND
4
Port A3
38
GND
5
Port A4
39
GND
6
Port A5
40
GND
7
Port A6
41
GND
8
Port A7
42
GND
9
Port B0
43
GND
10
Port B1
44
GND
11
Port B2
45
GND
12
Port B3
46
GND
13
Port B4
47
GND
14
Port B5
48
GND
15
Port B6
49
GND
16
Port B7
50
GND
17
Port C0
51
GND
18
Port C1
52
GND
19
Port C2
53
GND
20
Port C3
54
GND
21
Port C4
55
GND
22
Port C5
56
GND
23
Port C6
57
GND
24
Port C7
58
GND
25
n/c
59
GND
26
IRQ_ENABLE
60
n/c
27
IRQ_INPUT
61
n/c
28
n/c
62
n/c
29
n/c
63
n/c
30
n/c
64
n/c
31
GND
65
GND
32
n/c
66
n/c
33
GND
67
GND
34
PC +5V
68
PC +5V

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/LP
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