Acces PCIe-DIO-144 User manual

10623 Roselle Street, San Diego, CA 92121 •[phone] •FAX [phone]
[email protected] •www.accesio.com
MODEL
PCIe-DIO-144
Digital I/O Card
USER MANUAL
FILE: PCIe-DIO-144.A1a

2 Manual PCIe-DIO-144
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 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.

3 Manual PCIe-DIO-144
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.

4 Manual PCIe-DIO-144
Table of Contents
Chapter 1: Introduction................................................................................................................ 5
Features..................................................................................................................................... 5
Applications............................................................................................................................... 5
Functional Description............................................................................................................. 5
Figure 1-1: Block Diagram.................................................................................................. 6
Ordering Guide......................................................................................................................... 7
Model Options........................................................................................................................... 7
Included with your board......................................................................................................... 7
Optional Accessories............................................................................................................... 7
Chapter 2: Installation.................................................................................................................. 8
Software Installation ....................................................................................................8
Installing from Downloaded Installer............................................................................8
Installing from CD........................................................................................................8
Windows......................................................................................................................8
Linux............................................................................................................................8
Hardware Installation............................................................................................................... 9
Chapter 3: Hardware Details.................................................................................................... 10
Figure 3-1: Option Selection Map.................................................................................... 10
Chapter 4: Address Selection .................................................................................................. 11
Chapter 5: Programming........................................................................................................... 12
Developing Your Own Software........................................................................................... 12
Table 6-1: Address Registry Table.................................................................................. 12
Table 6-2: Control Register Bit Assignments................................................................. 13
Chapter 6: Connector Pin Assignments ................................................................................. 14
Table 6-1: Connector Pin Assignments CN2 through CN6 50 pin headers.............. 14
Table 6-2: Connector Pin Assignments CN1 DB37F ................................................... 15
Chapter 7: Specifications.......................................................................................................... 16
Digital I/O................................................................................................................................. 16
VCCIO...................................................................................................................................... 16
Environmental......................................................................................................................... 16
Customer Comments................................................................................................................. 17

5 Manual PCIe-DIO-144
Chapter 1: Introduction
The PCIe-DIO-144 series are x1 lane PCI Express (PCIe) boards with 144 digital I/O
lines designed for use in a variety of Digital I/O (DIO) applications. They use the high
speed PCIe bus to transfer digital data to and from the board. The FPGA based DIO
emulates 8255 compatible chips in mode 0, making it easy to program. This also allows
for simple migration from older ACCES’ PCI-based DIO boards. Lastly, the x1 lane PCIe
connector is very flexible and can be inserted into any x1, x4, x8, x16, or x32 PCIe slot.
Features
•144 high-current DIO lines
•IRQ generation from DIO Bit C3 on each connector
•DIO lines buffered
•Five 50 pin male headers on side of card, one DB37F on mounting bracket
•Four and eight bit ports independently selectable for inputs or outputs
•Per port jumper selectable 10k ohm Pull-up/Pull-down resistors on DIO lines
•Global jumper selectable VCCIO (5V, 3.3V, 2.5V, 1.8V)
•VCCIO voltage available to the user via 0.5A resettable fuse
•Compatible with industry standard I/O racks like Grayhill, Opto 22, Western Reserve
Controls, etc.
Applications
•Automatic Test Systems
•Security Systems, Energy Management
•Robotics
•Relay Monitoring and Control
•Parallel Data Transfer to PC
•Sensing switch closures or TTL, DTL, CMOS Logic
•Driving Indicator Lights or Recorders
Functional Description
Buffers
Each I/O line is buffered and capable of sourcing or sinking 32mA when VCCIO is
configured for 5V. The board contains FPGA circuitry that emulates type 8255 mode 0
Programmable Peripheral Interface (GROUP) to provide a computer interface to digital
I/O lines. Each group supports two 8-bit ports (A, B) and two 4-bit ports (CHi, CLo). Each
port can be configured to function as either input or output latches. The I/O line buffers
are configured automatically by hardware logic for input or output according to the
GROUP Control Register direction software assignment. All DIO lines can be tristated as
well using the corresponding software command.

6 Manual PCIe-DIO-144
Bias Resistors
Outputs of the I/O buffers are jumper configurable to be pulled up or down through 10kΩ
resistor networks to VCCIO. There is a description in the Hardware Details chapter of
this manual that describes how to configure these on your card.
Interrupts
One digital I/O line of each group can be used to generate an interrupt with a rising edge
at bit C3. Interrupts are enabled by software.
Wiring
I/O wiring connections are via 50-pin headers on the board and a single DB37F
connector on the card mounting bracket. The 50-pin headers provide compatibility with
OPTO-22, Gordos, Potter & Brumfield, Western Reserve Controls, etc. module mounting
racks. Every second conductor of the 50 pin header is grounded to minimize crosstalk
between signals. If needed for external circuits, fused VCCIO power is available on each
50 pin I/O connector at pin 49.
Figure 1-1: Block Diagram

7 Manual PCIe-DIO-144
Ordering Guide
PCIe-DIO-144 144 Channel Digital I/O Card
Model Options
-T Extended operating temperature (-40° to +85°C)
-RoHS RoHS compliant version
Included with your board
The following components are included with your shipment. Please take time now to
ensure that no items are damaged or missing.
PCIe-DIO-144 Board
Adjacent mounting bracket with strain relief bars for the 5 x 50 pin flat ribbon cables
Packing Slip
Optional Accessories
CAB50F-X Ribbon cable assembly w/2-50 pin female connectors, X=length in feet
CAB50-6 6’ ribbon cable female 50 pin to 50 pin card edge connector
STB-50 Screw terminal board for 50 pin headers on side of DIO card
STB-37 Screw terminal board for DB37 connector on card mounting bracket
STB-120CH 50-pin multi-header screw terminal board for 120 DIO lines

8 Manual PCIe-DIO-144
Chapter 2: Installation
Software 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 (http://accesio.com/files/packages/PCIe-DIO-
144%20Install.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 D:INSTALL, click OK or press Enter.
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.
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.

9 Manual PCIe-DIO-144
Hardware Installation
1. Make sure to set switches and jumpers from either the Hardware Details chapter
of this manual or from the suggestions of SETTINGS.EXE.
2. Turn OFF computer power AND unplug AC power from the system.
3. Open the computer cover.
4. Lay the card on an ESD safe workstation mat and plug the 5 ribbon cables onto
the headers on the side of the card. Lay the cables as they will be when installed
in the PC.
5. Remove the 2 nuts holding the strain relief bars onto the adjacent mounting
bracket and remove one of the strain relief bars, setting it aside along with the
nuts.
6. Position the adjacent mounting bracket assembly under the cables, next to the
card mounting bracket.
7. Install the strain relief bar removed in step 6 onto the adjacent mounting bracket
screws and tighten the nuts without over-tightening.
8. Feed the ribbon cables secured by the adjacent mounting bracket out of the PC
case through the open back plate next to the PCI Express slot you’ll be plugging
the card into and install the bracket screw.
9. Carefully plug the card into the PCI Express expansion slot while feeding the
cable slack through the adjacent open back plate.
10. Inspect for proper fit of the card and tighten the bracket screw. Make sure that
the card mounting bracket is properly screwed into place and that there is a
positive chassis ground.
11. 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.
12. Run one of the provided sample programs that was copied to the newly created
card directory (from the CD or downloaded from the product page) to test and
validate your installation.

10 Manual PCIe-DIO-144
Chapter 3: Hardware Details
Refer to the illustrated setup program installed with the software package when reading
this section of the manual. Also, refer to Figure 3-1, Option Selection Map.
External interrupts are accepted on pin 9 (Bit C3) of each 50 pin I/O connector when
enabled by software. The interrupt signal should be a rising edge and is latched.
As pointed out in Chapter 1 of this manual, outputs of the I/O buffers may be either
pulled-up to VCCIO or pulled down to ground. You can configure these resistors per
port.
VCCIO signaling levels are globally configured via jumper selection. Refer to the
specifications chapter for signal levels for each possible selection.
The foregoing are the only manual setups necessary to use these cards. Input/Output
selection is done via software, by writing to the GROUP Control Registers as described
in the Programming section of this manual.
Figure 3-1: Option Selection Map

11 Manual PCIe-DIO-144
Chapter 4: Address Selection
These cards use one address space, and occupy 64 register locations. These are
defined in the Port Address Selection Table in the Programming section of this manual.
PCI Express architecture is inherently plug-and-play. This means that the BIOS or
Operating System determines the resources assigned to PCI Express cards rather than
you selecting those resources with switches or jumpers. As a result, you cannot set or
change the card's base address or IRQ level. You can only determine what the system
has assigned.
To determine the base address that has been assigned, run the AIOWDMFind.EXE
utility program provided. This utility will display a list of all of the cards detected on the
PCI Express bus, the addresses assigned to each function on each of the cards, and the
respective IRQs.
Alternatively, some operating systems can be queried to determine which resources
were assigned. In these operating systems, you can use either AIOWDMFind (Windows
7 or later) PCIFind or the Device Manager utility from the System Properties Applet of
the control panel. The card is installed in the Data Acquisition class of the Device
Manager list. Selecting the card, clicking Properties, and then selecting the Resources
Tab will display a list of the resources allocated to the card.
If you want to determine the base address and IRQ yourself, use the following
information.
The Vendor ID for these cards is 494F. (ASCII for "IO")
The Device ID for the PCIe-DIO-144 is 0C40.

12 Manual PCIe-DIO-144
Chapter 5: Programming
The 144 card is an I/O mapped device that can be easily configured from any language.
Developing Your Own Software
Four register locations are required per 24-bit group. Thus, a total of 24 register
locations are used by the PCIe-DIO-144 card for addressing groups 0 through 5.
Address
Assignment
Operation
Base Address
PA Group 0
Read/Write
Base Address +1
PB Group 0
Read/Write
Base Address +2
PC Group 0
Read/Write
Base Address +3
Control Port 0
Write Only
Base Address +4
PA Group 1
Read/Write
Base Address +5
PB Group 1
Read/Write
Base Address +6
PC Group 1
Read/Write
Base Address +7
Control Port 1
Write Only
Base Address +8
PA Group 2
Read/Write
Base Address +9
PB Group 2
Read/Write
Base Address +A
PC Group 2
Read/Write
Base Address +B
Control Port 2
Write Only
Base Address +C
PA Group 3
Read/Write
Base Address +D
PB Group 3
Read/Write
Base Address +E
PC Group 3
Read/Write
Base Address +F
Control Port 3
Write Only
Base Address +10
PA Group 4
Read/Write
Base Address +11
PB Group 4
Read/Write
Base Address +12
PC Group 4
Read/Write
Base Address +13
Control Port 4
Write Only
Base Address +14
PA Group 5
Read/Write
Base Address +15
PB Group 5
Read/Write
Base Address +16
PC Group 5
Read/Write
Base Address +17
Control Port 5
Write Only
Base Address +1C
DIO Buffer Enable
Read/Write
Base Address +1E
Clear/Disable
Interrupts
Write Only
Base Address +1F
Clear/Enable Interrupts
Write Only
Table 6-1: Address Registry Table

13 Manual PCIe-DIO-144
The cards are designed to emulate each GROUP wherein:
a. There are two 8-bit ports (A and B) and two 4-bit ports (C Hi and C Lo).
b. Any port can be configured as an input or an output.
c. Outputs are latched.
d. Inputs are not latched.
e. The card is initialized in the input mode
Each GROUP contains a control register. This Write-only, 8-bit register is used to set the
mode and direction of the ports. At Power-Up or Reset, all I/O lines are set as inputs.
Each GROUP should be configured during initialization by writing to the control registers
even if the ports are going to be used as inputs. Output buffers are automatically set by
hardware logic according to the control register states. Control registers are located at
base addresses +3, +7, +B, +F, +13, and +17. Bit assignments in each of these control
registers are as follows:
Bit
Assignment
Function
D0
Port C Lo (C0-C3)
1 = Input, 0 = Output
D1
Port B
1 = Input, 0 = Output
D2
N/A
N/A
D3
Port C Hi (C4-C7)
1 = Input, 0 = Output
D4
Port A
1 = Input, 0 = Output
D5,D6
N/A
N/A
D7
Mode Set (see note 1)
Scratchpad
Table 6-2: Control Register Bit Assignments
Note 1: This bit is a read/write scratchpad. For maximum compatibility with the 8255,
always set this bit (to 1).
Base Address +1C (read/write) DIO Buffer Enable / Disable (tri-state)
At power-up or reset, all DIO buffers on the card are enabled. To disable the DIO
buffers, write a one to bit 0. To re-enable the DIO buffers, write a zero to bit 0. When
buffers are disabled the pins are tri-stated and biased by the state of the pull up or down
configuration jumpers. A read of bit 0 returns the enable / disable status.
Base Address +1E/+1F (write only)Interrupt Clear & Disable/Enable
The interrupt is disabled at power-up or reset. A write to base +1F enables the interrupt
whereas a write to base +1E disables it. A write to either of those address will also clear
the interrupt.

14 Manual PCIe-DIO-144
Chapter 6: Connector Pin Assignments
Five 50-pin headers are provided on the cards; one for each group of 24 I/O lines.
Assignment
Pin
Assignment
Pin
Port C Hi PC7
1
All Even numbered pins are Ground
2
Port C Hi PC6
3
4
Port C Hi PC5
5
6
Port C Hi PC4
7
8
Port C Lo PC3*
9
10
Port C Lo PC2
11
12
Port C Lo PC1
13
14
Port C Lo PC0
15
16
Port B PB7
17
18
Port B PB6
19
20
Port B PB5
21
22
Port B PB4
23
24
Port B PB3
25
26
Port B PB2
27
28
Port B PB1
29
30
Port B PB0
31
32
Port A PA7
33
34
Port A PA6
35
36
Port A PA5
37
38
Port A PA4
39
40
Port A PA3
41
42
Port A PA2
43
44
Port A PA1
45
46
Port A PA0
47
48
Fused VCCIO
49
50
Table 6-1: Connector Pin Assignments CN2 through CN6 50 pin headers
* This line is an I/O port and also a User Interrupt.

15 Manual PCIe-DIO-144
One 37-pin female DB37 connector is provided on the card mounting bracket.
Assignment
Pin
Assignment
Pin
N/C No Connection
1
Fused VCCIO
20
N/C
2
Ground
21
PB7
3
PC7
22
PB6
4
PC6
23
PB5
5
PC5
24
PB4
6
PC4
25
PB3
7
PC3*
26
PB2
8
PC2
27
PB1
9
PC1
28
PB0
10
PC0
29
Ground
11
PA7
30
N/C
12
PA6
31
Ground
13
PA5
32
N/C
14
PA4
33
Ground
15
PA3
34
N/C
16
PA2
35
Ground
17
PA1
36
Fused VCCIO
18
PA0
37
Ground
19
Table 6-2: Connector Pin Assignments CN1 DB37F
* This line is an I/O port and also a User Interrupt.

16 Manual PCIe-DIO-144
Chapter 7: Specifications
Digital I/O
Lines 144; (6 Groups) Ports A, B, CLo and CHi
Type Emulates 8255 compatible chips in Mode 0
Logic Level VCCIO
Pull-up/down 10k ohm, jumper selectable
VCCIO
Logic Levels
5V
Low Inputs
≤ 1.5V
≤ 2uA
High Inputs
≥ 3.5V
≤ 2uA
Low Outputs
≤ 0.55V
32mA
High Outputs
≥ 3.8V
32mA
Logic Levels
3.3V
Low Inputs
≤ 0.8V
≤ 2uA
High Inputs
≥ 2.0V
≤ 2uA
Low Outputs
≤ 0.55V
24mA
High Outputs
≥ 2.4V
24mA
Logic Levels
2.5V
Low Inputs
≤ 0.7V
≤ 2uA
High Inputs
≥ 1.7V
≤ 2uA
Low Outputs
≤ 0.5V
8mA
High Outputs
≥ 1.9V
8mA
Logic Levels
1.8V
Low Inputs
≤ 0.63V
≤ 2uA
High Inputs
≥ 1.17V
≤ 2uA
Low Outputs
≤ 0.45V
4mA
High Outputs
≥ 1.2V
4mA
Environmental
Operating Temperature 0° to 70°C
optional -40° to +85°C
Storage Temperature -55° to +150°C
Humidity 5% to 95% RH, w/o condensation
Card Dimensions Length –10.5" x height 3.875”(4.2" seated)

17 Manual PCIe-DIO-144
Customer Comments
If you experience any problems with this manual or just want to give us some feedback,
please email us at: [email protected]m. 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