Omega OMG-PCI-DIO48 User Manual

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User’s Guide

OMG-PCI-DIO48

48 Channel Digital I/O Board

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The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

Contents

INTRODUCTION..........................................................................................................1

OVERVIEW........................................................................................................................1

WHAT ’S INCLUDED........................................................................................................1

INSTALLATION...........................................................................................................1

CARD SETUP ....................................................................................................................1

SOFTWARE INSTALLATION ..........................................................................................1

Linux Users............................................................................................................1

SYSTEM INSTALLATION................................................................................................2

TECHNICAL DESCRIPTION.....................................................................................3

SOFTWARE .......................................................................................................................3

LINUX USERS ....................................................................................................................3

3rd Party Software Support.................................................................................4

ELECTRICAL CHARACTERISTICS..................................................................................5

Pull Ups ..................................................................................................................6

50 PIN RIBBON PIN OUT ................................................................................................7

APPLICATION PROGRAMMERS INTERFACE (API)....................................................8

Presetting an Output Port:.................................................................................8

Interrupts: .............................................................................................................. 8

PORT C..............................................................................................................................8

Port Configuration:.............................................................................................9

Relative Addressing vs. Absolute Addressing.................................................9

ABSOLUTE ADDRESS....................................................................................................12

DIRECT HARDWARE CONTROL..................................................................................14

Reading the Inputs:............................................................................................14

Reading the Outputs:.........................................................................................14

Presetting an Output Port:...............................................................................14

Writing the Outputs:..........................................................................................14

Bit Set/Reset........................................................................................................14

Port Configuration:...........................................................................................14

Interrupts.............................................................................................................15

Port C ...................................................................................................................16

Register Description (for direct hardware control)....................................16

SPECIFICATIONS......................................................................................................22

ENVIRONMENTAL SPECIFICATIONS..........................................................................22

POWER CONSUMPTION................................................................................................22

MEAN TIME BETWEEN FAILURES (MTBF).............................................................22

PHYSICAL DIMENSIONS................................................................................................22

APPENDIX A - TROUBLE SHOOTING..................................................................23

APPENDIX B - HOW TO GET ASSISTANCE......................................................24

APPENDIX C - SILK-SCREEN.................................................................................25

APPENDIX D - COMPLIANCE NOTICES.............................................................26

FEDERAL COMMUNICATIONS COMMISSION STATEMENT ....................................26

EMC DIRECTIVE STATEMENT ...................................................................................26

FIGURES

Figure 1-Electrical Characteristics...................................................................5

Figure 2-Pull Up Resistors ..................................................................................6

Figure 3-50 Pin Ribbon Cable Pin Out..............................................................7

Figure 4-Control Words .......................................................................................9

Figure 5-Absolute byte Address (any configuration)....................................11

Figure 6-Relative byte Address Given:.............................................................11

Figure 7-Absolute bit Address (any configuration).......................................12

Figure 8-Relative Byte Address........................................................................13

Figure 9-(Print and fill in for your configuration)........................................14

Figure 10-RegisterDescription.........................................................................16

Figure 11-Control Words...................................................................................18

Figure 12-Interrupt Control ..............................................................................21

Figure 13-Interrupt Mode...................................................................................21

Figure 14-Interrupt Read...................................................................................21

Introduction and Installation

Introduction

Overview

The OMG-PCI-DIO48 provides two 8255 mode 0 compatible ports providing
four eight-bit ports and four four-bit ports. Each can be individually configured
as inputs or outputs. When configured as outputs each bit of the four bit ports
may be set or reset individually.

What’s Included

The OMG-PCI -DIO48 is shipped with the following items. If any of these items
is missing or damaged, contact the supplier.

• OMG-PCI-DIO48 Adapter

• Software

• Industry Standard Relay Rack Cables are Available:

Part number CA135 for Edge Connection
Part number CA167 for IDC Connection

Installation

Card Setup

The OMG-PCI -DIO48 is a fully compliant PCI ‘Plug and Play’ adapter. All card
resources (i.e. I/O address, IRQ selection) are auto-assigned by either your
system BIOS or your ‘Plug and Play’ operating system.

Software Installation

For proper operation install software first. To install the software place the CD in
your CD-ROM tray and the auto-run program will start. If auto-run is not
available browse the CD and choose “index.htm”. Choose Install Software at the
beginning of the CD. Select the Digital I/O software drivers and install SeaIO
prior to installing hardware.

Linux Users

Refer to the installation instructions at the beginning of the CD for details on
installing the digital I/O cards in Linux.

OMG-PCI -DIO48 Page 1

Introduction and Installation

System Installation

The OMG-PCI -DIO48 can be installed in any of the PCI expansion slots.

1. Turn off PC power. Disconnect the power cord.

2. Remove the PC case cover.

3. Locate an available PCI slot and remove the blank metal slot cover.

4. Remove the clamping portion of the bracket from the card.

5. Gently insert the OMG-PCI-DIO48 into the slot. Make sure that the

adapter is seated properly.

6. Feed the two 50-pin ribbon cables through the cutout bracket and
connect them to the card.

7. Replace the bracket retaining screw.

8. Install the clamping portion of the bracket

9. Replace the computer cover.

10. Connect the power cord. Installation is complete.

OMG-PCI -DIO48 Page 2

Technical Description

Technical Description

The OMG-PCI -DIO48 provides 48 channels of digital I/O configurable as inputs or outputs, which
can be utilized for PC based control and automation including sensors, switches, satellite antenna
control systems, video and audio studio automation, security control systems, and other industrial
automation systems.

Software

The OMG-PCI-DIO48 ships with the SeaI/O suite of Windows 98/NT/ME/2000 drivers. SeaI/O
provides the user with a consistent and straightforward API, allowing the developer to concentrate
on the details of the application as opposed to low level driver development. Popular development
environments, including Visual C++, Visual Basic, and Delphi, are supported for application
development. SeaI/O includes a utility for configuring the driver parameters under Windows,
further simplifying installation.

Linux Users

The OMG-PCI -DIO48 ships with software for Linux, including a kernel-mode driver, API, and the
SeaIOTst diagnostic tool. The kernel-mode driver is provided as a module, so future driver
upgrades may be performed with minimal (usually zero) downtime. The Linux API is identical to its
Windows counterpart, facilitating quick and easy ports of existing SeaI/O-aware applications to the
Linux operating system. All source code for the Linux software suite is provided under the GNU
Public License (GPL v2.0), to assist in "roll-your-own"-type applications.

OMG-PCI -DIO48 Page 3

Technical Description

3rd Party Software Support

Third party software support for many HMI/MMI and other process control software is included
on the product installation CD. For the most up to date information on third party software support,
please visit http://www.omega.com.

OMG-PCI -DIO48 Page 4

Technical Description

Electrical Characteristics

The table below provides the electrical characteristics of each Input/Output. Each port is buffered
with a 74LS245 octal bi -directional transceiver. Each input is capable of sinking up to
24 mA, while each output can source up to 15 mA.

Recommended Operating Conditions

Min Max

Input 0 V 5.25 V

Source 15 mA

Sink 24 mA

Electrical Characteristics

High Level Input Voltage Min 2 V

Low Level Input Voltage Max 0.8 V

High Level Output Voltage

Typically 3.4 V at 3 mA

Low Level Output Voltage Max 0.55 V at 24 mA

Min 2 V at 15 mA

Figure 1-Electrical Characteristics

OMG-PCI -DIO48 Page 5

Technical Description

Pull Ups

Ten pin bussed resistor packs are installed to provide pull-ups to the input ports. These are
installed on all ports. The pull-up resistor packs are rated at 10K ohms. Figure 2 below provides the
bussed resistor and corresponding port. The resistors insure that no line is floating which is not
connected. This provides consistent biasing on all un-terminated lines.

Bussed Corresponding

Resistor Port Resistor Port

RP4 Port A1 RP1 Port A2
RP5 Port B1 RP2 Port B2
RP6 Port C1 RP3 Port C2

Bussed Corresponding

Figure 2-Pull Up Resistors

OMG-PCI -DIO48 Page 6