SeaLevel DIO-16.PCI User manual

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
DIO-16.PCI
User Manual | 8002H

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Contents
CONTENTS............................................................................................................................................................................................................................2
INTRODUCTION...................................................................................................................................................................................................................3
BEFORE YOU GET STARTED..............................................................................................................................................................................................4
SOFTWARE INSTALLATION ...............................................................................................................................................................................................6
HARDWARE INSTALLATION...............................................................................................................................................................................................7
PROGRAMMING THE DIO-16.PCI....................................................................................................................................................................................8
ELECTRICAL CHARACTERISTICS...................................................................................................................................................................................14
SPECIFICATIONS...............................................................................................................................................................................................................15
EXAMPLE CIRCUITS ..........................................................................................................................................................................................................17
APPENDIX A –TROUBLESHOOTING.............................................................................................................................................................................18
APPENDIX B –HOW TO GET ASSISTANCE..................................................................................................................................................................19
APPENDIX –SILK SCREEN –8002H PCB..................................................................................................................................................................20
APPENDIX D–COMPLIANCE NOTICES......................................................................................................................................................................... 21
WARRANTY ........................................................................................................................................................................................................................22

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Introduction
Overview
The DIO-16.PCI provides 8 optically isolated inputs and 8 reed relay outputs. The inputs (rated for 10-30V)
protect the PC and other sensitive equipment from spikes and ground loop current that can be generated
in industrial environments, while the outputs provide high quality, long life, low current (10 Watt maximum),
dry contact switch closures. Reed relays are well suited for low current applications. The relays are normally
open and will close when energized. The board is PCI bus specification 2.1 compliant.
The DIO-16.PCI is designed to be used with a variety of Operating Systems including Windows
98/NT/ME/2000/XP, Linux, and DOS. The SeaI/O API (Application Programmer Interface) included in
Sealevel’s software provides a variety of useful high-level function calls implemented as a Windows
dynamic link library (DLL) and as a Linux kernel module and library. In addition to the API, SeaI/O includes
sample code and utilities to simplify software development.
Other Sealevel PCI Digital I/O Products
PIO-24.PCI
(P/N 8008)
- 24 TTL Inputs/Outputs
PIO-32.PCI
(P/N 8010)
- 32 TTL Inputs/Outputs
PIO-48.PCI
(P/N 8005)
-- 48 TTL Inputs/Outputs
PIO-96.PCI
(P/N 8009)
-- 96 TTL Inputs/Outputs
REL-16.PCI
(P/N 8003)
- 16 Reed Relay Outputs
DIO-32.PCI
(P/N 8004)
-16 Reed Relay Outputs/16 Opto-Isolated Inputs
ISO-16.PCI
(P/N 8006)
- 16 Opto-isolated Inputs
REL-32.PCI
(P/N 8007)
- 32 Reed Relay Outputs
PLC-16.PCI
(P/N 8011)
- 8 Form C Relay Outputs/8 Opto-isolated Inputs

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Before You Get Started
What’s Included
The DIO-16.PCI is shipped with the following items. If any of these items is missing or damaged, please
contact Sealevel for replacement.
•DIO-16.PCI Adapter
Advisory Conventions
Warning
The highest level of importance used to stress a condition where damage could result to the
product, or the user could suffer serious injury.
Important
The middle level of importance used to highlight information that might not seem obvious or a
situation that could cause the product to fail.
Note
The lowest level of importance used to provide background information, additional tips, or other
non-critical facts that will not affect the use of the product.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful for
interfacing the DIO-16.PCI to real-world signals. All items can be purchased from our website
(http://www.sealevel.com) or by calling [phone].
•DB-37 Male to DB-37 Female 6’ Cable - (Part Number CA112)
−This cable extends the DB-37 connector on the REL-16.PCI to six
feet and is pinned one-to-one.
•DB-37 Male/Female Terminal Block (Part Number TB02-KT)
−Break out serial and digital connectors to 37 screw terminals for
easy field connection. The TB02 terminal block is designed with
both DB-37 male and female connectors, therefore; it can be
used with any DB-37 board regardless of the board's port
gender.
•Cable and Terminal Block Kit (Part Number KT101)
−For convenient and easier ordering, the KT101 includes the
TB02-KT terminal block and CA112 cable in a single kit.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Software Installation
For Windows Users
Begin by locating, selecting, and installing the SeaIO software from the Sealevel website. The SeaIO
Software Overview page provides information that will allow you to easily download the SeaIO Software for
Windows.
Other Operating Systems
Refer to the appropriate section of the Serial Utilities Software.
LINUX INSTALLATION
Refer to Linux Archives - Sealevel or download the SeaIO Software for Linux. This link contains valuable
information on installing your serial adapter in the various Linux releases. Also included is a series of files
explaining proper Linux syntax and typical Linux serial implementations.
For additional software support, please call Sealevel Systems’ Technical Support, [phone]. Our
technical support is free and available from 8:00AM-5PM Eastern Time, Monday through Friday. For
email support contact [e-mail].

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Hardware Installation
The adapter can be installed in any 5V PCI expansion slot.
Do not install the Adapter in the machine until the software has been fully installed.
1. Turn off PC power. Disconnect the power cord.
2. Remove the PC case cover.
3. Locate an available 5V PCI slot and remove the blank metal slot cover.
4. Gently insert the PCI adapter into the slot. Make sure that the adapter is seated properly.
5. After the adapter has been installed, the cables should be routed thru the opening in the
bracket. This bracket also features a strain relief function that should be used to prevent un-
expected cable removal.
6. Replace the screw you removed for the blank and use it to secure the adapter into the slot.
(This is required to ensure FCC Part 15 compliance.)
7. Replace the cover.
8. Connect the power cord
The DIO-16.PCI is now ready for use.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI
Sealevel’s SeaI/O software is provided to assist in the development of reliable applications for the Sealevel
Systems family of digital I/O adapters. Also included in Sealevel’s software are driver functions for use in
accessing the I/O as well as helpful samples and utilities.
Programming for Windows
The SeaI/O API (Application Programmer Interface) provides a variety of useful high-level function calls
implemented in a Windows dynamic link library (DLL). The API is defined in the help file
(Start/Programs/SeaIO/SeaIO Help) under “Application Programmers Interface”. This help file also
includes detailed information dealing with installation / removal of the software and information about
latency, logic states, and device configuration.
For C language programmers we recommend using the API to access the DIO-16.PCI. If you are
programming in Visual Basic, using the ActiveX control included with SeaI/O is advised.
Samples and Utilities
A variety of sample programs and utilities (both executable and source code) are included with SeaI/O.
Further documentation on these samples can be found by selecting “Start/Programs/SeaIO/Sample
Application Description”. Information about where the files are physically stored on your disk is also
included in this same file.
Programming for Linux
SeaI/O for Linux consists of two major parts: a kernel module and a library. The kernel module is a simple
IO pass-through device, allowing the library to handle the more sophisticated functions provided to SeaI/O
users. It is provided in a ‘tarball’ format and can easily be compiled and included in the kernel build.
Digital I/O Interface
The DIO-16.PCI provides two parallel input/output (I/O) ports. The ports are organized as ports A, B, C, and
D. Port A is an input port interfaced to optically isolated inputs, while port C is the reed relay output port.
Input Port
Port A is an eight-bit input port connected to optically isolated input sensors. Each sensor can be used to
interface a voltage input and then sense whether the voltage is on or off. Each sensor is isolated (with
respect to a common ground) from every other sensor, and isolated with respect to the host PC ground.
This means that signals such as low-level AC line voltage, motor servo voltage, and control relay signals
can be ‘sensed’, or read by the PC, without the risk of damage due to ground loops or ground faults.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI, Continued
Each sensor input pair has a current limiting resistor that is used to limit the input current to the opto-
isolator. The opto-isolator has two ‘back-to-back’ diodes internally. This allows AC or DC signals to be
sensed, regardless of polarity. When the applied voltage is high enough to cause the led in the opto-isolator
to turn-on, the output of the opto-isolator goes low (0 volts), and the signal is read as a low logic level (binary
0) by the PC. When the input signal is too low to turn on the opto-isolator, the output goes high, and the port
bit is read by the PC as a high logic level (binary 1).
The input impedance of each isolated input is approximately 3.3K ohms (factory default). The opto-isolator
requires approximately 3mA to turn on. The maximum input current is 50mA. There are two things to
consider when selecting the input resistor. The first is turn on voltage for the circuit to sense, and second
is the maximum input voltage. Maximum input voltage must not provide too much power to the input
resistor and must also not overdrive the opto-isolator input current specification. The following formulas
apply:
Turn on Voltage = diode drop + (turn on current) x (resistance) [Ex: 1.1 + (.003) x R]
Input Current = ((input voltage)-1.1V) / (resistor value)
Maximum voltage = 1.1 + square root of (.25(resistor value))
The following table shows common input resistors and the ranges associated with each.
Input Resistor
Turn-On
Input Range
Max Input
Max Current
220 
1.8V
1.8 –7.0V
8.5V
27mA
560 
2.8V
2.8 –10.6V
12.9V
20mA
1K 
4.1V
4.1 –13.8V
16.9V
15mA
2.2K 
7.7V
7.7 –20.0V
24.5V
10mA
3.3K 
10.0V
10.0 –24.0V
30.0V
9mA
4.7K 
15.2V
15.2 –28.0V
35.0V
7mA
The turn-off voltage for all resistors is less than 1V.
Increasing the input resistor accordingly can increase the maximum input voltage. Because socketed DIP
resistors are utilized, they can easily be replaced with a different value. Sealevel, if necessary, can do this.
The input circuits are not intended for monitoring 120-volt AC circuits. In addition to being too
high a voltage for the circuits, it is dangerous to have that high a voltage on the card.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI, Continued
Input Port Pin Assignments (DB-37 Male)
Port A Bit
P1
0
2,20
1
3,21
2
4,22
3
5,23
4
6,24
5
7,25
6
8,26
7
9,27
Output Ports (Reed Relays)
Reed relays provide very high quality, long life, low current (10 Watt maximum), dry contact
switch closures. Reed relays are not suited for high current applications, and can be destroyed by
inductive load switching, where a spark occurs across the contacts internally. The relays are
normally open, and close when energized.
Output Port Pin Assignments
Port C Bit
Relay
P2 Pin
0
K1
10,28
1
K2
11,29
2
K3
12,30
3
K4
13,31
4
K5
14,32
5
K6
15,33
6
K7
16,34
7
K8
17,35
Power and Ground Pin Assignments
Ground
18,36,37
+ 5 Volts
19
+ 12 Volts
1

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI, Continued
Direct Hardware Control
In systems where the user’s program has direct access to the hardware (i.e., DOS) the table below gives
the mapping and functions that the DIO-16.PCI provides.
R = Read
R/W = Read or Write
Function Available
Port
Address Hex
Port Type
RD
A
Base+0
Input Port (Opto Input)
B
Base+1
Not Assigned
R/W
C
Base+2
Output Port (Reed Relays)
D
Base+3
Not Assigned
RD = Read, RD/WR = Read or Write
Reading the Inputs
The inputs are active Low. If no voltage is applied across one of the differential inputs, it returns a one on
that bit. If an AC or DC voltage is applied, it returns a zero on that bit.
Reading the Outputs
The relay ports return the ones complement of the value that is currently being used to drive the relays.
Writing the Outputs
The output ports are the only ports that can be written. The relays on a standard DIO-32.PCI are normally
open. To close a relay a one must be written to the appropriate bit.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI, Continued
Register Description
All ports are set to input after reset or power up.
Address
Mode
D7
D6
D5
D4
D3
D2
D1
D0
Base+0
RD
PAD7
PAD6
PAD5
PAD4
PAD3
PAD2
PAD1
PAD0
Base+1
RD
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+2
RD/WR
PCD7
PCD6
PCD5
PCD4
PCD3
PCD2
PCD1
PCD0
Base+3
RD
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+4
RD
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+5
RD/WR
IRQEN
IRQST
{0}
{0}
{0}
{0}
IRC1
IRC0
Base+6
RD
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+7
RD
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Interrupt Control
When enabled, interrupts are generated on Port A bit D0.
IRQEN
Interrupt enable
1 = enabled
0 = disabled ( 0 on power up )
IRC0
IRC1
Interrupt mode select, see table below
Interrupt mode select, see table below

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Programming the DIO-16.PCI, Continued
Interrupt Mode Select Table
Interrupt source is Base+0 bit D0. When selecting the Interrupt Type, always disable interrupts prior to
changing or setting states. This will help prevent inadvertent or unexpected interrupts from occurring.
IRC1
IRC0
Interrupt Type
0
0
Low Level
0
1
High Level
1
0
Falling Edge
1
1
Rising Edge
When using the High and Low Level interrupts, an interrupt occurs when input D0 changes to
either a High or Low state. This will cause the computer to remain in an interrupt state until the
input state changes.
Interrupt Read
Reading the Interrupt Status port (Base+5) clears any interrupt pending.
IRQST
(D0) Interrupt Status
1 = interrupt pending, 0 = none

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Electrical Characteristics
Features
•8 SPST relays
•1 eight bit optically isolated input port
•DB-37 Male connector
•Highly reliable 10 VA DIP reed relays
•Multiple adapters can reside in same computer
•PCI 2.1 Bus compatible

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Specifications
Input Ports
Turn On Current
3mA
Isolator Diode Drop
1.1 VDC
Resistor Power Max
.25 W
Maximum Input Range
10 –30 VDC/VAC
Output Relays
Contact Max Power Rating
10 W
Contact Voltage Maximum
100 VDC/VAC
Contact Current Maximum
.5A AC/DC RMS
Contact Resistance, Initial
.15 
Rated Life –Low Load
200 Million Closures
Rated Life –Maximum Load
100 Million Closures
Contact Speed –Operate
.5 mS
Contact Speed –Release
.5 mS
Contact Speed –Bounce
.5 mS
Maximum Operating Speed
600Hz
Environmental Specifications
Specification
Operating
Storage
Temperature Range
0º to 70º C
-50º to 105º C
Power Consumption
Supply Line
+5 VDC
Rating
280 mA

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Specifications, Continued
Physical Dimensions
Package Length
5.0 inches (12.7 cm)
Package Height
3.9 inches (9.9 cm, including Gold fingers)
Manufacturing
All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested.
These printed circuit boards are solder mask over bare copper or solder mask over tin nickel.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Example Circuits
Input Circuit
Output Circuit

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Appendix A –Troubleshooting
Following these simple steps can eliminate most common problems.
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. Read this manual thoroughly before attempting to install the adapter in your system.
3. Use Device Manager under Windows to verify proper installation.
4. Use the SeaIO Control Panel applet or the Device Manager’s property page for card
identification and configuration.
If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, [phone].
Our technical support is free and available from 8:00AM-5PM Eastern Time, Monday through Friday. For
email support contact: [e-mail].

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Appendix B –How To Get Assistance
Please refer to: Appendix A -- Troubleshooting Guide prior to calling Technical Support.
Begin by reading through the Trouble Shooting Guide in Appendix A. If assistance is still
needed, please see below.
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.
Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many
common questions. This section can be found at http://www.sealevel.com/faq.asp.
Sealevel Systems maintains a web page on the Internet. Our home page address
is www.sealevel.com. The latest software updates, and newest manuals are available via our
web site.
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 [phone].
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.

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© Sealevel Systems, Inc. 8002H Manual | SL9021 9/2021
Appendix C –Silk Screen –8002H PCB
3.90"
5.00"