Acces I/O products PCI-IDO-48A User manual

10623 Roselle Street, San Diego, CA 92121 •[phone] •FAX [phone]
[email protected] •www.accesio.com
MODELS
PCI-IDO-48A,
PCI-IDO-32A,
and PCI-IDO-16A
Isolated FET Outputs PCI Card
With External Trigger Updates
USER MANUAL
FILE: MPCI-IDO-48A.A2c

Manual PCI-IDO-48A Series
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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.
Copyright 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.

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Table of Contents
Chapter 1: Introduction ........................................................................................................ 5
Features ............................................................................................................................. 5
Applications....................................................................................................................... 5
Functional Description...................................................................................................... 5
Figure 1-1: Block Diagram.............................................................................................................................6
Figure 1-2: Isolated FET Output Schematic..................................................................................................7
Ordering Guide.................................................................................................................. 7
Model Options ................................................................................................................... 7
Special Order..................................................................................................................... 7
Included with your board.................................................................................................. 7
Optional Accessories........................................................................................................ 8
Chapter 2: Installation .......................................................................................................... 9
Chapter 3: Option Selection............................................................................................... 11
Figure 3-1: Option Selection Map............................................................................................................... 11
Chapter 4: Address Selection............................................................................................ 12
Chapter 5: Programming.................................................................................................... 13
Table 5-1: Register Address Map............................................................................................................. 13
Chapter 6: Connector Pin Assignments ........................................................................... 15
Table 6-1: Port 0 Connector Pin Assignments (P2).................................................................................... 15
Table 6-2: Port 1 Connector Pin Assignments (P3).................................................................................... 16
Table 6-3: Port 2 Connector Pin Assignments (P4).................................................................................... 17
Chapter 7: Specifications................................................................................................... 18

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Chapter 1: Introduction
The PCI-IDO-48A is a PCI board providing opto-isolated discrete outputs with load voltages
up to 60VDC. Solid-state, P-Channel FET switches are used as the output elements
providing greater reliability and much faster turn-on and turn-off time than is possible with
electromechanical relays. Immediate and External Trigger modes offer flexibility for updating
the outputs.
Features
Up to 48 individually isolated digital Outputs
Immediate and External Trigger Modes
Trigger Over-run / Buffer Under-run error detection
All solid-state design permits higher throughput than is possible with electromechanical relays
Load voltages up to 60VDC
Outputs off at power turn-on and computer reset
Output connectors via on-card ribbon-cable headers
Lower cost per point than externally-racked solid-state relay modules
Applications
POS (Point-of-sale) Systems
Gaming Machines
Telecommunications
Industrial Automation
ATM (Automated Teller Machine) Systems
Multiple terminal control
Office Automation
Kiosks
Functional Description
This series of cards provide 48, 32, or 16 opto-isolated discrete outputs. Each output is
individually isolated using solid-state, P-Channel FET switches. These switches provide
higher throughput in comparison to electromechanical relays. The outputs require user-
supplied load voltages ranging from 5VDC to 60VDC. Diodes are included across the load for
inductive-spike protection.
The outputs are grouped into six 8-bit bytes. There are two software selectable modes for
updating the outputs: Immediate and External Trigger mode. Immediate mode updates the
outputs as they are written. External Trigger mode stores the written output values into a
buffer. The buffer contents are transferred to the outputs with a rising edge of the External
Trigger. Outputs can be written multiple times without an External trigger occurring.
However, only the last written values will be transferred upon a rising edge of the External
Trigger. The Trigger Control Register can also be software configured to reset both the buffer
contents and outputs on a falling edge. This allows pulse-width control of the outputs.

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This board is also able to detect and count buffer underrun errors when using the External
Trigger mode. A buffer underrun error occurs when a rising edge of the External Trigger
happens before the outputs are written. Conversely, buffer overflow occurs when outputs are
written more than once without an External Trigger rising edge. To prevent buffer overflow, a
software readable bit can be polled to tell if a rising edge of the External Trigger has
happened.
Refer to Chapter 5: Programming for details regarding the functions mentioned above.
Output connections are via three 50-pin IDC connectors, labeled Port0, Port1, and Port2 in
this manual. Each Port contains sixteen outputs and Port0 also contains The External Trigger
input.
Outputs are broken out using 50-wire ribbon cables that mate with the IDC connectors on the
card. A strain relief bar where the cables exit the card assures that the cables will not interfere
with adjacent cards. Standard cables are six feet long but alternate lengths are available.
Figure 1-1: Block Diagram

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Figure 1-2: Isolated FET Output Schematic
Ordering Guide
PCI-IDO-48A 48-Channel FET Output Board
PCI-IDO-32A 32-Channel FET Output Board
PCI-IDO-16A 16-Channel FET Output Board
Model Options
-T Extended temperature operation (-40° to +85°C)
-RoHS RoHS compliant version
Special Order
Please contact ACCES with your precise requirement. Examples of special orders would be
conformal coating, custom software, etc., we will work with you to provide exactly what is
required.
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.
PCI FET Output Card
Software Master CD
Quick-Start Guide

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Optional Accessories
CAB50F-6
Six-foot ribbon cable assembly with
50-pin female connectors
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-72CH
50-Pin Three-Header Universal Screw
Terminal Board Installed in T-BOX Black
Powder-Coated Metal Enclosure
MP104-DIN
Kit allows DIN rail mounting of STB-72CH
in the T-BOX.

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Chapter 2: Installation
A printed Quick-Start Guide (QSG) is packed with the card for your convenience. If you’ve
already performed the steps from the QSG, you may find this chapter to be redundant and
may skip forward to begin developing your application.
The software provided with this card is on CD and must be installed onto your hard disk prior
to use. To do this, perform the following steps as appropriate for your operating system.
CD Software Installation
The following instructions assume the CD-ROM drive is drive “D”. Please substitute the
appropriate drive letter for your system as necessary.
DOS 1. Place the CD into your CD-ROM drive.
2. Type  to change the active drive to the CD-ROM drive.
3. Type  to run the install program.
4. Follow the on-screen prompts to install the software for this board.
WINDOWS
1. Place the CD into your CD-ROM drive.
2. The system should automatically run the install program. If the install program does
not run promptly, click START | RUN and type , click OK or press
.
3. Follow the on-screen prompts to install the software for this board.
LINUX
1. Please refer to linux.html on the CD-ROM for information on installing under linux.

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Caution! * ESD A single static discharge can damage your card and cause
premature failure! Please follow all reasonable precautions to
prevent a static discharge such as grounding yourself by touching
any grounded surface prior to touching the card.
Hardware Installation
1. Do not install card into the computer until the software has been fully installed.
2. Turn OFF computer power AND unplug AC power from the system.
3. Remove the computer cover.
4. Remove the two (2) nuts retaining the strain relief brackets from the card, set one bracket
aside with the nuts.
5. Select an available location to install the card in an available 5V or 3.3V PCI expansion slot
(you may need to remove a backplate first). DO not plug the card into the slot yet…..
6. With the card in your hand or on the bench, feed ribbon cable(s) through the selected
computer backplate one at a time and plug onto the card header, starting closest to the
mounting bracket. When all cables are installed, re-install the strain relief bracket and nuts,
and tighten until snug. DO NOT OVERTIGHTEN!
7. Carefully plug the card into the slot and inspect for proper seating and fit. Make sure that the
card mounting bracket is properly screwed into place and that there is a positive chassis
ground.
8. Make connections from installed ribbon cables to the field equipment / wiring.
9. Check all connections and installations to ensure the system is ready to be turned on. Do not
turn on field power before turning on the computer as all outputs on the card will be
ON.
10. Replace the computer cover and turn ON the computer which should auto-detect the card
(depending on the operating system) and automatically finish installing the drivers.
11. Run PCIfind.exe to complete installing the card into the registry (for Windows only) and to
determine the assigned resources.
12. Run one of the provided sample programs that was copied to the newly created card directory
(from the CD) to test and validate your installation.
13. Once the card has been initialized and you’re sure the outputs are in a known state, external /
field power may now be turned on if desired.
The base address assigned by BIOS or the operating system can change each time new
hardware is installed into or removed from the computer. Please recheck PCIFind or Device
Manager if the hardware configuration is changed. Software you write can automatically
determine the base address of the card using a variety of methods depending on the
operating system. In DOS, the PCI\SOURCE directory shows the BIOS calls used to
determine the address and IRQ assigned to installed PCI devices. In Windows, the Windows
sample programs demonstrate querying the registry entries (created by PCIFind and
NTIOPCI.SYS during boot-up) to determine this same information.