Acces USB-DIO-32I User manual

10623 Roselle Street, San Diego, CA 92121 •[phone] •FAX [phone]
[email protected] •www.accesio.com
MODEL USB-DIO-32I
32-Channel, Individual, Independently
Selectable Digital I/O Module
USER MANUAL
FILE: MUSB-DIO-32I.B1

Manual USB-DIO-32I
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Notice
The information in this document is provided for reference only. ACCES does not assume any
liability arising out of the application or use of the information or products described herein. This
document may contain or reference information and products protected by copyrights or patents
and does not convey any license under the patent rights of ACCES, nor the rights of others.
IBM PC, PC/XT, and PC/AT are registered trademarks of the International Business Machines
Corporation.
Printed in USA. Copyright 2011 by ACCES I/O Products Inc, 10623 Roselle Street, San Diego, CA
92121. All rights reserved.
WARNING!!
ALWAYS CONNECT AND DISCONNECT YOUR FIELD CABLING WITH
THE COMPUTER POWER OFF. ALWAYS TURN COMPUTER POWER OFF
BEFORE INSTALLING A CARD. CONNECTING AND DISCONNECTING
CABLES, OR INSTALLING CARDS INTO A SYSTEM WITH THE
COMPUTER OR FIELD POWER ON MAY CAUSE DAMAGE TO THE I/O
CARD AND WILL VOID ALL WARRANTIES, IMPLIED OR EXPRESSED.

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Warranty
Prior to shipment, ACCES equipment is thoroughly inspected and tested to applicable
specifications. However, should equipment failure occur, ACCES assures its customers that prompt
service and support will be available. All equipment originally manufactured by ACCES which is
found to be defective will be repaired or replaced subject to the following considerations.
Terms and Conditions
If a unit is suspected of failure, contact ACCES' Customer Service department. Be prepared to give
the unit model number, serial number, and a description of the failure symptom(s). We may suggest
some simple tests to confirm the failure. We will assign a Return Material Authorization (RMA)
number which must appear on the outer label of the return package. All units/components should
be properly packed for handling and returned with freight prepaid to the ACCES designated Service
Center, and will be returned to the customer's/user's site freight prepaid and invoiced.
Coverage
First Three Years: Returned unit/part will be repaired and/or replaced at ACCES option with no
charge for labor or parts not excluded by warranty. Warranty commences with equipment shipment.
Following Years: Throughout your equipment's lifetime, ACCES stands ready to provide on-site or
in-plant service at reasonable rates similar to those of other manufacturers in the industry.
Equipment Not Manufactured by ACCES
Equipment provided but not manufactured by ACCES is warranted and will be repaired according to
the terms and conditions of the respective equipment manufacturer's warranty.
General
Under this Warranty, liability of ACCES is limited to replacing, repairing or issuing credit (at ACCES
discretion) for any products which are proved to be defective during the warranty period. In no case
is ACCES liable for consequential or special damage arriving from use or misuse of our product.
The customer is responsible for all charges caused by modifications or additions to ACCES
equipment not approved in writing by ACCES or, if in ACCES opinion the equipment has been
subjected to abnormal use. "Abnormal use" for purposes of this warranty is defined as any use to
which the equipment is exposed other than that use specified or intended as evidenced by
purchase or sales representation. Other than the above, no other warranty, expressed or implied,
shall apply to any and all such equipment furnished or sold by ACCES.
Support and Application Engineering
ACCES stands behind our products and strive to provide responsive support and service. If you
need help working with our products, or customization advice, please don’t hesitate to call us at
800-326-1649. Your utter satisfaction is our ultimate reward!

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Table of Contents
Warranty...........................................................................................................................3
Terms and Conditions.................................................................................................3
Coverage ......................................................................................................................3
Equipment Not Manufactured by ACCES ..................................................................3
General .........................................................................................................................3
Support and Application Engineering...........................................................................3
Chapter 1: Introduction ......................................................................................................5
Features ...........................................................................................................................5
Applications.....................................................................................................................5
Functional Description....................................................................................................6
Figure 1-1: Block Diagram............................................................................................7
Ordering Guide................................................................................................................7
Model Options .................................................................................................................7
Special Order...................................................................................................................7
Customization and Special Functions...........................................................................7
Figure 1-2: Enclosure Label..........................................................................................9
Chapter 2: Installation ......................................................................................................10
Software CD Installation...............................................................................................10
Hardware Installation....................................................................................................10
Chapter 3: Hardware Details............................................................................................11
Option Selections..........................................................................................................11
USB Connector..............................................................................................................11
Embedded USB Connector...........................................................................................11
LED.................................................................................................................................12
DC Power Jack (Optional).............................................................................................12
-ST Screw Terminals for High Retention Ext. Power..................................................12
DIO Pull up / Pull down Jumper Configuration...........................................................12
50 Pin Box Header.........................................................................................................12
5V Resettable Fused Output.........................................................................................12
Chapter 4: USB Address Information..............................................................................13
Chapter 5: Programming..................................................................................................14
Chapter 6: Connector Pin Assignments .........................................................................15
Table 6-1: 50-Pin Connector Pin Assignments............................................................15
Chapter 7: Specifications.................................................................................................16
Customer Comments........................................................................................................17

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Chapter 1: Introduction
Features
•32 lines of digital I/O buffered with 32 mA source, 64mA sink current capabilities
•High-speed USB 2.0 device, USB 3.0 compatible
•All lines independently selectable for inputs or outputs
•Terminal block adapter card for easy wiring
•I/O Buffers can be enabled or tri-stated under program control
•I/O’s pulled up to 5V (via 10KΩ) for dry-contact monitoring or pulled down to ground via
configuration jumpers (per 8 channel group)
•Jumper selectable power provided via USB cable or external power supply for higher
source current capabilities
•Resettable fused +5VDC output
•Standard 50pin IDC type connector with key
•PC/104 size (3.550 by 3.775 in.)
•Rugged industrial enclosure
•Compatible with Industry-Standard I/O Racks such as Gordos, OPTO22, Potter &
Brumfield, etc. with optional cable
Applications
•Automatic Test Systems
•Laboratory Automation
•Robotics
•Machine Control
•Security Systems, Energy Management
•Relay Monitoring and Control
•Parallel Data Transfer to PC
•Sensing Switch Closures or TTL, DTL, CMOS Logic
•Driving Indicator Lights or Recorders

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Functional Description
This USB board is an ideal solution for adding portable, easy-to-install digital I/O to any
computer with a USB port. The USB-DIO-32I is a USB 2.0 high-speed device, offering the
highest speed available on the USB 2.0 bus. It is fully compatible with both USB 1.1 and
USB 3.0 ports. The card is plug-and-play allowing quick connect/disconnect whenever you
need additional I/O on your USB port.
The board features 32 bits of TTL-compatible digital I/O with high-current capabilities. Each
digital line can be programmed to accept an input or to drive an output. Power is supplied to
the card via the USB cable or for higher source current capabilities, external power may be
used. The I/O wiring connections are via an industry standard 50-pin connector or via an
included removable screw terminal adapter. For external circuits, fused +5VDC power is
available at the connector. The resettable fuse is rated at 0.5A.
All I/O lines are buffered by a type ABT tri-stateable buffer transceiver capable of sourcing
32 mA or sinking 64 mA. The buffers are configured under program control for input or
output. I/O lines are pulled-up or down via configuration jumpers through 10KΩ to +5 VDC
or ground for confidence of the I/O line states at known levels when the device is powered
up and initializing.
For compatibility with industry standard solid state module mounting racks, external power is
required for the logic side of the module mounting rack as the load is typically greater than
what can be provided over a USB port.
Unlike most USB digital I/O products which primarily use a human interface device (HID)
driver, we provide an easy to use, Windows-based, custom function driver optimized for
maximum data throughput. This approach exposes the full functionality of the hardware
along with maximizing the advantage of using the high-speed USB 2.0 bus.
The board is designed to be used in rugged industrial environments but is small enough to
fit nicely onto any desk or testing station. The board is PC/104 size (3.550 by 3.775 inches)
and ships inside a steel powder-coated enclosure with an anti-skid bottom.

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Figure 1-1: Block Diagram
Ordering Guide
USB-DIO-32I USB 32-individually selectable I/O digital module
Model Options
-T Extended operating temperature of -40 to +85°C
-OEM Board only version with no enclosure
-E Economy version includes no screw terminal
-PR On-board DC power circuitry and ext. power AC to regulated 5VDC adapter
-ST High-retention screw terminals for ext. power connection instead of DC jack
-RoHS This product is available in a RoHS compliant version
-U Replace right angle I/O connector with 50-pin straight up
Special Order
-S0x Contact factory with your special requirement. Examples of special orders would be
conformal coating, latching I/O headers, higher sink / source current, compatibility with
industry standard 24 line solid state module racks etc..
Customization and Special Functions
Due to the nature of our USB modules, many special functions can be implemented with a
combination of custom firmware and an associated DLL entry point, for little to no NRE.
Functions such as quadrature input, pulse-width modulated outputs, even input de-
bouncing. Call us to discuss your requirement!

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Included with your board
The following components are included with your shipment, depending on options ordered.
Please take the time now to ensure that no items are damaged or missing.
USB Module in labeled enclosure with an anti-skid bottom
Universal screw terminal block
6' USB 2.0 cable
Optional Accessories
CUSB-EMB-X
USB Type A to micro-fit OEM header, X=1
for 1’ cable, 6 for 6’ cable
CAB50F-6
Six-foot ribbon cable assembly with
50-pin female connectors
CAB50-6
Six-foot ribbon cable assembly with
a 50-pin female header connector
and a 50-pin female edge connector
STB-50
Screw terminal board, typically ships
with standoffs but can also mount on
SNAP-TRACK or DIN-SNAP
DIN-SNAP-6
Six inch length of SNAP-TRACK with
two clips, for mounting one STB-50
screw terminal board on a DIN rail
STB-50D
Direct connect 50-pin removable spring-
cage terminal board for -U option
STB-50U Kit
Used for mounting the STB-50U to the
enclosure of the USB-DIO-32I. Includes
STB-50U, cable and specialized mounting
hardware.
MP104-DIN
DIN-rail mounting adapter plate for
affixing any USB/104 module to a DIN-rail

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Figure 1-2: Enclosure Label

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Chapter 2: Installation
Software CD Installation
The software provided with this board is available by request on CD (see Optional
Accessories in the ordering guide) for a fee, or downloaded via the product page for free
and must be installed onto your hard disk prior to use.
Installing from Downloaded Installer
Download the software package here (https://accesio.com/files/packages/USB-AIO16-16F
Install.exe) or from the Downloads tab on the product page.
Installing from CD
Perform the following steps as appropriate for your operating system. Substitute the
appropriate drive letter for your drive where you see D: in the examples below.
Windows
a. Place the CD into your CD-ROM drive.
b. The CD should automatically run the install program. If the install program does not run,
click START | RUN and type , click OK or press .
c. Follow the on-screen prompts to install the software for this board.
Linux
Please refer to linux.htm, and visit https://github.com/accesio for more.
Hardware Installation
The board can be installed in any USB 2.0 or USB 1.1 port. Please refer to the USB I/O
Quick Start Guide which can be found on the CD, for specific, quick steps to complete the
hardware and software installation.

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Chapter 3: Hardware Details
Option Selections
Refer to the settings program installed with the software package. Also, refer to the Block
Diagram when reading this section of the manual.
USB Connector
The primary USB connector is a Type B high-retention connector and mates with the cable
provided. The USB port provides communication signals along with +5 VDC power. The
board can be powered from the USB port or, if needed for higher source current
applications, an external power supply can be used.
Embedded USB Connector
Micro 5-pin header provides embedded devices with a compact USB interface. Use this
with one of our OEM USB cables.

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LED
The LED on the front of the enclosure is used to indicate power and data transmissions.
When the LED is in an illuminated steady green state, this signifies that the board is
successfully connected to the computer and has been detected and configured by the
operating system. When the LED flashes continuously, this signifies that there is data being
transmitted over the USB bus.
DC Power Jack (Optional)
This is an option for high source current applications when more current is needed than
what your computer can provide on the USB port (typically 500 mA). The DC jack has a
2.00mm post on board and is designed to be used with the 5 VDC AC/DC external power
supply that ships with this option (-PR). When using external power, switch the jumper
located near the USB connector to VEXT, otherwise when the jumper is in the VUSB
position current is drawn from the USB port (please consult the option selection map for a
visual reference).
-ST Screw Terminals for High Retention Ext. Power
Specify “-ST” when ordering the OEM version of this board to connect external power via
secure screw terminals instead of a non-retained DC jack. Strip your wires approximately
4mm and tin, then tighten the regulated +5 VDC source leads into the labeled terminals.
DIO Pull up / Pull down Jumper Configuration
4 sets of jumpers are used to field select 10k ohm pull-up or pull down resistors for four
groups of 8 DIO lines.
50 Pin Box Header
The 50 pin box header has standard .100" spacing between pins and is keyed to prevent
improper connections. It can be used with standard IDC type ribbon cables or the included
screw terminal board that plugs directly into the box header.
5V Resettable Fused Output
A 0.5A resettable fuse at pin 49 may be used to power external module racks or relay
boards and such. If an over-current persists on a circuit protected by a resettable fuse, it will
open interrupting power to the circuit. Response time depends on over-current level and
ambient temperature, humidity, etc. The fuse will remain open until the bi-metal elements
cool sufficiently, at which time the circuit will be restored.

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Chapter 4: USB Address Information
Use the provided driver to access the USB board. This driver will allow you to determine
how many supported USB devices are currently installed, and each device’s type. This
information is returned as a Vendor ID (VID), Product ID (PID) and Device Index.
The board’s VID is “0x1605", and its PID is “0x8004".
The Device Index is determined by how many of the device you have in your system, and
provides a unique identifier allowing you to access a specific board at will.

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Chapter 5: Programming
The driver software provided with the board uses a 32-bit .dll front end compatible with any
Windows programming language. Samples provided in Borland Delphi, Microsoft Visual
Basic, Microsoft Visual C++ and C# demonstrate the use of the driver.
The following functions are provided by the driver in Windows.
These functions will allow you to read or write individual bits, bytes, or the entire board worth
of data. In addition, board-level functions complete the driver package.
For detailed information on each function refer to the USB Software Reference Manual.PDF
located in the <cardname> directory for this board. A C# Development Guide.PDF is
located in C:\Program Files\ACCES\USB-DIO-32I\Win32\Driver.SRC\AIOUSBNetSLN
(assuming defaults are accepted when installing from the CD).
unsigned long GetDevices(void )
unsigned long QueryDeviceInfo(DeviceIndex, pPID, pName, pDIOBytes, pCounters)
unsigned long DIO_Configure(DeviceIndex, bTristate, pOutMask, pData)
unsigned long DIO_Write1(DeviceIndex, BitIndex, bData)
unsigned long DIO_Write8(DeviceIndex, ByteIndex, Data)
unsigned long DIO_WriteAll(DeviceIndex,pData)
unsigned long DIO_Read8(DeviceIndex, ByteIndex,pBuffer)
unsigned long DIO_ReadAll(DeviceIndex,Buffer)

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Chapter 6: Connector Pin Assignments
A 50-pin male header connector protrudes through a cutout in the enclosure for I/O
connections. Connector pin assignments are listed below.
Table 6-1: 50-Pin Connector Pin Assignments
PIN
FUNCTION
PIN
FUNCTION
1
DIO C7
2
GND
3
DIO C6
4
GND
5
DIO C5
6
GND
7
DIO C4
8
GND
9
DIO C3
10
GND
11
DIO C2
12
GND
13
DIO C1
14
GND
15
DIO C0
16
GND
17
DIO B7
18
GND
19
DIO B6
20
DIO D7
21
DIO B5
22
DIO D6
23
DIO B4
24
GND
25
DIO B3
26
DIO D5
27
DIO B2
28
GND
29
DIO B1
30
DIO D4
31
DIO B0
32
GND
33
DIO A7
34
DIO D3
35
DIO A6
36
GND
37
DIO A5
38
DIO D2
39
DIO A4
40
GND
41
DIO A3
42
DIO D1
43
DIO A2
44
GND
45
DIO A1
46
DIO D0
47
DIO A0
48
GND
49
Fused +5VDC
50
GND

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Chapter 7: Specifications
Digital Inputs (TTL Compatible, @ 4kHz)
Logic High: 2.0 to 5.0 VDC
Logic Low: -0.5 to +0.8 VDC
Digital Outputs
Logic High: 2.0 VDC minimum, source 32 mA
Logic Low: 0.55 VDC maximum, sink 64 mA
Pull-Up / -Down Resistor: 10k ohms (to +5V or GND)
Bus Type: USB 2.0 High-speed,
USB 3.0 Compatible
USB 1.1 Full-speed compatible
Environmental
Operating Temp: 0° to 70°C
Storage Temp: -40° to +85°C
Humidity: 5%-95%, non-condensing
Board Dim.: 3.550 x 3.775 inches
Box Dim.: 4.0 x 4.0 x 1.25 inches
Power
+5VDC: 60mA (All inputs, no load)
150mA (All outputs low, no load) provided via USB at up to 500mA**
**+5 VDC from the USB bus or external power supply depending on user
configuration. The USB bus is specified to provide 500 mA to most desktop
environments. This gives you 350mA available (500 mA - 150mA = 350 mA).
If using more than a total of 500mA, use optional Regulated 5 VDC external
power supply and remove VUSB jumper and place jumper on VEXT. Then
plug in external power before plugging into USB port.

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Customer Comments
If you experience any problems with this manual or just want to give us some feedback, please
email us at: manua[email protected]. Please detail any errors you find and include your mailing
address so that we can send you any manual updates.
10623 Roselle Street, San Diego CA 92121
Tel. [phone] FAX [phone]
www.accesio.com