SeaLevel PIO-32.PC User manual

Part # 8010
Sealevel Systems, Inc
155 Technology Place
P.O. Box 830
Liberty, SC 29657 USA
Phone: [phone]
FAX: [phone]
www.sealevel.com
PIO-32.PCI
USER MANUAL
TM

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
FEATURES..............................................................................................................3
WINDOWS SOFTWARE...........................................................................................3
LINUX SOFTWARE.................................................................................................3
3RD PARTY SOFTWARE SUPPORT............................................................................4
50 PIN RIBBON CABLE PIN OUT ...............................................................................5
ELECTRICAL CHARACTERISTICS.............................................................................6
Pull Ups...........................................................................................................7
PROGRAMMING................................................................................................8
APPLICATION PROGRAMMERS INTERFACE (API)...................................................8
Presetting an Output Port:...........................................................................8
Interrupts:.......................................................................................................8
Port Configuration:......................................................................................8
Relative Addressing vs. Absolute Addressing...........................................9
PORT ADDRESSING..............................................................................................10
Addressing Continued...............................................................................11
DIRECT HARDWARE CONTROL...........................................................................12
Reading the Inputs:....................................................................................12
Reading the Outputs:.................................................................................12
Presetting an Output Port:........................................................................12
Writing the Outputs:..................................................................................12
Port Configuration:...................................................................................12
Interrupts.....................................................................................................12
Register Description (for direct hardware control)..............................13
SPECIFICATIONS............................................................................................14
ENVIRONMENTAL SPECIFICATIONS .....................................................................14
POWER CONSUMPTION.......................................................................................14
MEAN TIME BETWEEN FAILURES (MTBF).........................................................14
PHYSICAL DIMENSIONS ......................................................................................14

APPENDIX A -TROUBLESHOOTING........................................................15
APPENDIX B -HOW TO GET ASSISTANCE.............................................16
APPENDIX C -SILK-SCREEN......................................................................17
APPENDIX D -COMPLIANCE NOTICES..................................................18
FEDERAL COMMUNICATIONS COMMISSION STATEMENT....................................18
EMC DIRECTIVE STATEMENT............................................................................18
WARRANTY.......................................................................................................19
Figures
Figure 1-50 Pin Ribbon Cable Pin Out....................................................5
Figure 2-Electrical Characteristics.........................................................6
Figure 3-API Port/Bit Reference............................................................10
Figure 4-API Port/Bit Reference............................................................11
Figure 5-Register Description.................................................................13
© 2001l Sealevel Systems, Incorporated. All rights reserved.

Introduction and Installation
Sealevel Systems PIO-32.PCI Page 1
Introduction
Overview
The Sealevel Systems PIO-32.PCI provides the PC with four 8-bit ports that
can be defined independently as input or output.
What’s Included
The PIO-32.PCI is shipped with the following items. If any of these items is
missing or damaged, contact the supplier.
•PIO-32.PCI Adapter
•Sealevel Software CD
Installation
Card Setup
The PIO-32.PCI 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 Sealevel Systems digital I/O cards in Linux.

Introduction and Installation
Sealevel Systems PIO-32.PCI Page 2
System Installation
ThePIO-32.PCI 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. Gently insert the PIO-32.PCI into the slot. Make sure that the adapter
is seated properly.
5. Replace the screw.
6. Replace the cover.
7. Connect the power cord. Installation is complete.

Specifications
Sealevel Systems PIO-32.PCI Page 3
Technical Description
The PIO-32.PCI provides 32 channels of digital I/O configurable as inputs or
outputs, which can be utilized for PC based control and automation of
equipment. Uses include sensors, switches, satellite antenna control systems,
video and audio studio automation, security control systems, and other
industrial automation systems.
The PIO-32.PCI’s 32 channels consist of 4 ports of I/O, each port
configurable as either input or output, to suit the task at hand. The status of each
of the 4 ports is user selectable as input or output by simply writing a control
word to the port register. This gives the user the ability to customize the
combination of inputs and outputs as needed.
Features
•32 Channels of Digital I/O configurable as inputs or outputs
•Implemented as 4 ports of 8 channels each of I/O providing flexible
operation
•Terminal Block and cable kit available to simplify field wiring
requirements
•Supports all PCI interrupts
Windows Software
The PIO-24.PCI ships with Sealevel Systems’ 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. Sample
applications are included to facilitate rapid application development.
Linux Software
The PIO-24.PCI 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.

Specifications
Sealevel Systems PIO-32.PCI Page 4
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.sealevel.com/3rdpartysw.htm.

Specifications
Sealevel Systems PIO-32.PCI Page 5
50 pin ribbon cable pin out
Description Pin # Description Pin #
Port A Port C
A0 47 C0 15
A1 45 C1 13
A2 43 C2 11
A3 41 C3 9
A4 39 C4 7
A5 37 C5 5
A6 35 C6 3
A7 33 C7 1
Port B Port D
B0 31 D0 2
B1 29 D1 4
B2 27 D2 6
B3 25 D3 8
B4 23 D4 10
B5 21 D5 12
B6 19 D6 14
B7 17 D7 16
GND All Even pins from 18
+5V 49
Figure 1-50 Pin Ribbon Cable Pin Out

Specifications
Sealevel Systems PIO-32.PCI Page 6
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 Min 2 V at 15 mA
Typically 3.4 V at 3 mA
Low Level Output Voltage Max 0.55 V at 24 mA
Figure 2-Electrical Characteristics

Specifications
Sealevel Systems PIO-32.PCI Page 7
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
RP1 Port A
RP2 Port B
RP3 Port C
RP4 Port D

Specifications
Sealevel Systems PIO-32.PCI Page 8
Programming
Application Programmers Interface (API)
Most modern operating systems do not allow direct hardware access. The
SeaIO driver and API have been included to provide control over the hardware
in Windows and Linux environments.
The purpose of this section of the manual is to help the customer with the
mapping of the API to the actual inputs for the PIO-32.PCI specifically.
Complete documentation of the API can be found in its accompanying help file.
Presetting an Output Port:
Each port has an output register associated with it. This register may be written
and retains its value whether the port is configured as an input or an output. To
preset the value of an output port the program should write to the port when it
is configured as an input then configure it as an output. Inputs cannot be written
to with relative addressing, absolute addressing must be used. See Relative
Addressing vs. Absolute Addressing below.
Interrupts:
Interrupt sampling can be set up in the API. Port A bit zero is the interrupt
source(pin 47). Refer to the API section in the SeaI/O help file for more
detailed information.
Port Configuration:
Each eight-bit port can be configured as inputs or outputs. The API provides a
set adapter state call to access the control words. For this device, one control
word is used.
Control Word 0 = input 1 = output
Port A –Bit 0
Port B –Bit 1
Port C –Bit 2
Port D –Bit 3
Note: The control panel also allows you to configure the device. Your program
can over ride the control panel configuration when executed, but the control
panel configuration will be the default on power up. The default settings are
based on the settings in the control panel application when last changed and
saved after re-booting.

Specifications
Sealevel Systems PIO-32.PCI Page 9
Relative Addressing vs. Absolute Addressing
The SeaIO API makes a distinction between “absolute” and “relative”
addressing modes. In absolute addressing mode, the Port argument to the API
function acts as a simple byte offset from the base I/O address of the device.
For instance, Port #0 refers to the I/O address base + 0; Port #1 refers to the
I/O address base + 1.
Relative addressing mode, on the other hand, refers to input and output ports in
a logical fashion. With a Port argument of 0 and an API function meant to
output data, the first (0th) output port on the device will be utilized. Likewise,
with a Port argument of 0 and an API function designed to input data, the first
(0th) input port of the device will be utilized.
In all addressing modes, port numbers are zero-indexed; that is, the first port is
port #0, the second port is #1, the third #2, and so on.
Given Port A, Port D are inputs and Port B, Port C are outputs, the Tables
below he Absolute address, and the relative address. The absolute address will
be the same for any configuration, while the relative address will depend on the
particular configuration.

Specifications
Sealevel Systems PIO-32.PCI Page 10
Port Addressing
Figures 3 and 4 show the API Port/bit reference numbers for Absolute and
Relative Addressing
R = Read
W = Write
R/W = Read or Write
Port API Port # Absolute
Address (function) API Port # Relative Address
(function)
Port Type
A0 ( R/W ) 0 ( R ) Input Port
B1 ( R/W ) 0 ( W ) Output Port
C2 ( R/W ) 1 ( W ) Output Port
D3 ( R/W ) 1 ( R ) Input Port
Figure 3-API Port/Bit Reference

Specifications
Sealevel Systems PIO-32.PCI Page 11
Addressing Continued
Figure 4-API Port/Bit Reference
API Bit # Absolute
Address (function) API Bit # Relative Address (function) Port Bit
0 ( R/w ) 0 ( R ) A0 -Input
1 ( R/w ) 1 ( R ) A1 -Input
2 ( R/w ) 2 ( R ) A2 -Input
3 ( R/w ) 3 ( R ) A3 -Input
4 ( R/w ) 4 ( R ) A4 -Input
5 ( R/w ) 5 ( R ) A5 -Input
6 ( R/w ) 6(R ) A6 -Input
7 ( R/w ) 7 ( R ) A7 -Input
8 ( R/w ) 0 ( W ) B0 -Output
9 ( R/w ) 1 ( W ) B1 -Output
10 ( R/w ) 2 ( W ) B2 -Output
11 ( R/w ) 3 ( W ) B3 -Output
12 ( R/w ) 4 ( W ) B4 -Output
13 ( R/w ) 5 ( W ) B5 -Output
14 ( R/w ) 6 ( W ) B6 -Output
15 ( R/w ) 7 ( W ) B7 -Output
16 ( R/W ) 8 ( W ) C0 -Output
17 ( R/W ) 9 ( W ) C1 -Output
18 ( R/W ) 10( W ) C2 -Output
19 ( R/W ) 11( W ) C3 -Output
20 ( R/W ) 12( W ) C4 -Output
21 ( R/W ) 13( W ) C5 -Output
22 ( R/W ) 14( W ) C6 -Output
23 ( R/W ) 15( W ) C7 -Output
24 ( R/W ) 8 ( R ) D0 -Input
25 ( R/W ) 9 ( R ) D1 -Input
26 ( R/W ) 10 ( R ) D2 -Input
27 ( R/W ) 11 ( R ) D3 -Input
28 ( R/W ) 12 ( R ) D4 -Input
29 ( R/W ) 13 ( R ) D5 -Input
30 ( R/W ) 14 ( R ) D6 -Input
31 ( R/W ) 15 ( R ) D7 -Input

Specifications
Sealevel Systems PIO-32.PCI Page 12
Direct Hardware Control
In systems where the users program has direct access to the hardware (DOS)
the table below gives the mapping and functions that the PIO-32.PCI provide.
The address of each eight-bit port is calculated as shown in the table on the
following page, the cards base address plus an offset.
Reading the Inputs:
The inputs are active high. If an input is driven high (2V to 5.25 V) it will read
as a logical one (1), if driven low (0V to 0.8V) it will read as a logical zero (0).
If an input is not driven it will read as a one (1) due to the 10K ohm pull up
resistors on each port.
Reading the Outputs:
The value that is currently being used to drive the outputs will be returned.
Presetting an Output Port:
Each port has an output register associated with it. This register may be written
and retains its value whether the port is configured as an input or an output. To
preset the value of an output port the program should write to the port when it
is configured as an input then configure it as an output.
Writing the Outputs:
The outputs are active high. Writing a one (1) corresponds to 5V while writing
a zero (0) corresponds to 0V, at the output.
Port Configuration:
Each port can be configured as an input or an output by writing to its direction
control bit, refer to the table below.
Interrupts
Interrupts can be set up as shown on the following page. Port A1 bit zero is
the interrupt source(pin 47).

Technical Description
Sealevel Systems PIO-32.PCI Page 13
Register Description (for direct hardware control)
Address Mode D7 D6 D5 D4 D3 D2 D1 D0
Base+0 RD/WR PAD7 PAD6 PAD5 PAD4 PAD3 PAD2 PAD1 PAD0
Base+1 RD/WR PBD7 PBD6 PBD5 PBD4 PBD3 PBD2 PBD1 PBD0
Base+2 RD/WR PCD7 PCD6 PCD5 PCD4 PCD3 PCD2 PCD1 PCD0
Base+3 RD/WR PDD7 PDD6 PDD
5PDD 4PDD 3PDD 2PDD 1PDD 0
Base+4 RD/WR {0} {0} {0} {0} DIRD DIRC DIRB DIRA
Base+5 RD/WR IRQEN IRQST {0} {0} {0} {0} IRC1 IRC0
Base+6 RD Only {0} {0} {0} {0} {0} {0} {0} {0}
Base+7 RD Only {0} {0} {0} {0} {0} {0} {0} {0}
Figure 5-Register Description
Note: All ports are set to input after reset or power up.
Interrupt source is Base+0 bit D0. When selecting the Interrupt Mode, always
disable interrupts prior to changing or setting states. This will help prevent
inadvertent or un-expected interrupts from occurring. When using the high and
low level interrupts, a change in state of the input must occur before the
interrupt can be cleared. The device providing the input to Base +0, bit D0 must
do this.
PAD0-7= Port A (Base+0)
PBD0-7= Port B (Base+1)
PCD0-7= Port C (Base+2)
PDD0-7= Port D (Base+3)
DIRA-D= Port A-D direction control (Base+4)
0 = input
1 = output
IRC0-1= Interrupt Mode select (Base+5)
IRC1 IRC0 00Low level
01high level
10falling edge
11rising edge
IRQEN = enable interrupts (Base+5)
0 = disabled
1 = enabled (disabled after reset or power up).
IRQST = interrupt status (Base+5)
1 = interrupt pending (reading the bit clears interrupt).

Specifications
Sealevel Systems PIO-32.PCI Page 14
Specifications
Environmental Specifications
Specification Operating Storage
Temperature
Range 0º to 50º C (32º to 122º F) -20º to 70º C (-4º to 158º F)
Humidity Range 10 to 90% R.H.
Non-Condensing 10 to 90% R.H. Non-Condensing
Power Consumption
Supply line +5 VDC
Rating 500 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Board Length 4.72 inches (12.00 cm.)
Board Height including Goldfingers 3.30 inches (8.39 cm.)
Board Height excluding Goldfingers 2.975 inches (7.56 cm.)

Appendix A -Troubleshooting
Sealevel Systems PIO-32.PCI Page 15
Appendix A -Troubleshooting
Following these simple steps can eliminate most common problems without
the need to call Technical Support.
1. Install software first. After installing the software then proceed to adding
the hardware. This places the required installation files in the correct
locations.
2. Identify all I/O adapters currently installed in your system. This includes
your on-board serial ports, controller cards, sound cards etc. The I/O
addresses used by these adapters, as well as the IRQ (if any) should be
identified.
3. Ensure that there is no conflict with currently installed adapters. No two
adapters can occupy the same I/O address and may not be allowed to share
IRQs.
4. Make sure the Sealevel Systems adapter is securely installed in a
motherboard slot.

Appendix B -How To Get Assistance
Sealevel Systems PIO-32.PCI Page 16
Appendix B -How To Get Assistance
Please refer to Troubleshooting Guide prior to calling Technical Support.
1. Read this manual thoroughly before attempting to install the
adapter in your system.
2. When calling for technical assistance, please have your user
manual and current adapter settings. If possible, please have the
adapter installed in a computer ready to run diagnostics.
3. Sealevel Systems maintains a Home page on the Internet. Our
home page address is www.sealevel.com. The latest software
updates, and newest manuals are available via our FTP site that can
be accessed from our home page.
4. Technical support is available Monday to Friday from 8:00 a.m. to
5:00 p.m. eastern time. Technical support can be reached at (864)
843-4343.
RETURN AUTHORIZATION MUST BE OBTAINED FROM SEALEVEL
SYSTEMS BEFORE RETURNED MERCHANDISE WILL BE
ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY CALLING
SEALEVEL SYSTEMS AND REQUESTING A RETURN MERCHANDISE
AUTHORIZATION (RMA) NUMBER.

Appendix C -Silk-Screen
Sealevel Systems PIO-32.PCI Page 17
Appendix C -Silk-Screen
3.70"
4.20"