Omega OMG-USB-DIO48 User Manual

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User’s Guide

OMG-USB-DIO48

48 Channel Digital I/O Interface 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.

Manual No. M-3897

Content

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

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

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

INDUSTRY STANDARD RELAY RACK CABLES AND OPTIONS.................................1

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

TECHNICAL DESC RIPTION.....................................................................................2

SOFTWARE .......................................................................................................................2

RD

3

PARTY SOFTWARE SUPPORT ................................................................................2

ELECTRICAL CHARACTERISTICS..................................................................................3

BANKS AND PORTS.........................................................................................................5

SERIAL STRING ...............................................................................................................5

50 PIN RIBBON CABLE PIN OUT ....................................................................................6

PROGRAMMING ..........................................................................................................7

APPLICATION PROGRAMMERS INTERFACE (API)....................................................7

PRESETTING AN OUTPUT PORT : .................................................................................7

INTERRUPTS: ...................................................................................................................7

PORT CONFIGURATION:.................................................................................................8

RELATIVE ADDRESSING VS. ABSOLUTE ADDRESSING ..............................................9

SPECIFICATIONS......................................................................................................12

ENVIRONMENTAL SPECIFICATIONS..........................................................................12

POWER CONSUMPTION................................................................................................12

MEAN TIME BETWEEN FAILURES (MTBF).............................................................12

APPENDIX A - TROUBLE SHOOTING..................................................................13

APPENDIX B - HOW TO GET ASSISTANCE......................................................14

APPENDIX C - SILK-SCREEN.................................................................................15

APPENDIX D - COMPLIANCE NOTICES.............................................................16

FEDERAL COMMUNICATIONS COMMISSION STATEMENT ....................................16

EMC DIRECTIVE STATEMENT ...................................................................................16

FIGURES

Figure 1- Operating Conditions..........................................................................3

Figure 2- Pull Up Resistors .................................................................................4

Figure 3- Bank and Ports.....................................................................................5

Figure 4- 50 Pin Header/Ribbon Cable Pin out................................................6

Figure 5- Absolute Byte Address (Same for any configuration)...................9

Figure 6- Relative Byte Address (Only applies to the given configuration)9

Figure 7- Absolute Bit Address (Same for any configuration)....................10

Figure 8- Absolute Bit Address (Same for any configuration)....................11

Figure 9- Bit Relative Address (Print and fill in for your configuration).12

Introduction and Installation

Introduction

Overview

The OMG-USB-DIO48 provides six eight-bit ports that may be individually
configured as inputs or outputs.

What’s Included

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

• OMG-USB-DIO48 Adapter

• Software CD

• 5V Power Supply

• USB A to B Cable, Part number CA179

Industry Standard Relay Rack Cables and Options

• Part number CA135 for Edge Connection

• Part number CA167 for IDC Connection

• Part number TB07-50 pin terminal block

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. After installing the software, connect the power
adapter and USB cable to the OMG-USB-DIO48. In the event that the hardware
is installed first, the “Found new hardware wizard” will request a driver disk.
Insert the software CD and browse the SeaIO directory for the “SeaIO.inf” file. A
complete installation of the SeaIO suite is recommended by running setup. When
plugged in the device will light its enable LED once enumerated properly. Be sure
to follow these steps to insure that the

OMG-USB-DIO48 opens and enumerates properly.

OMG-USB-DIO48 Page 1

Technical

Technical Description

The OMG-USB-DIO48 provides 48 channels of digital I/O configurable as inputs
or outputs. Applications include PC based control and automation of sensors,
switches, satellite antenna control systems, video and audio studio automation,
security control systems, and other industrial automation.

Software

The OMG-USB-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 are
supported for application development. SeaI/O includes sample applications and
a utility for configuring the driver parameters under Windows, further simplifying
installation.

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-USB-DIO48 Page 2

Technical

Electrical Characteristics

Figure 1, below provides the electrical characteristics of each Input/Output. Each
port is buffered with a 74ABT245 octal bi-directional transceiver. Each input is
capable of sinking up to 64 mA, while each output can source up to 32 mA. The
OMG-USB-DIO48 requires a 5V power source and is shipped with a 5V power
supply rated at 2.4 A.

Recommended Operating Conditions

Min Max

Input 0 V 5.25 V

Source 32 mA

Sink 64 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 64 mA

Min 2 V at 32 mA

Figure 1- Operating Conditions

OMG-USB-DIO48 Page 3