SeaLevel DIO-16.PCI User manual

Part # 8002
Sealevel Systems, Inc
155 Technology Place
P.O. Box 830
Liberty, SC 29657 USA
Phone: [phone]
FAX: [phone]
www.sealevel.com
DIO-16.PCI
USER MANUAL
TM

Contents
INTRODUCTION..................................................................................................1
OVERVIEW .................................................................................................................1
WHAT’S INCLUDED....................................................................................................1
INSTALLATION....................................................................................................1
CARD SETUP..............................................................................................................1
SOFTWARE INSTALLATION ........................................................................................1
FOR WINDOWS USERS...............................................................................................1
SYSTEM INSTALLATION .............................................................................................1
TECHNICAL DESCRIPTION............................................................................2
FEATURES..................................................................................................................2
INPUT PORT ...............................................................................................................2
Sensor Input Port Pin Assignments (P3 DB-37 Male)...............................4
OUTPUT PORT (REED RELAY)....................................................................................4
RELAY SPECIFICATIONS .............................................................................................4
Output Port (Reed Relay) Pin Assignments (P3 DB-37 Male)..................5
SOFTWARE ................................................................................................................5
PROGRAMMING................................................................................................6
APPLICATION PROGRAMMERS INTERFACE (API) .......................................................6
Interrupts.........................................................................................................6
Relative Addressing Vs. Absolute Addressing.............................................6
DIRECT HARDWARE CONTROL..................................................................................8
Reading the Inputs (direct) : ..........................................................................8
Reading the Outputs (relays) (direct) :.........................................................8
Writing the Outputs (relays) (direct) :..........................................................8
Interrupts.........................................................................................................8
Register Description......................................................................................9
SPECIFICATIONS............................................................................................10
ENVIRONMENTAL SPECIFICATIONS..........................................................................10
POWER CONSUMPTION...........................................................................................10
MEAN TIME BETWEEN FAILURES (MTBF).............................................................10
PHYSICAL DIMENSIONS...........................................................................................10
APPENDIX A -TROUBLESHOOTING........................................................11
APPENDIX B -HOW TO GET ASSISTANCE.............................................12
APPENDIX C -SILK-SCREEN......................................................................13

APPENDIX D -COMPLIANCE NOTICES..................................................14
FEDERAL COMMUNICATIONS COMMISSION STATEMENT........................................14
EMC DIRECTIVE STATEMENT ................................................................................14
WARRANTY.......................................................................................................15
© 2002a Sealevel Systems, Incorporated. All rights reserved.

Introduction and Installation
Sealevel Systems DIO-16.PCI Page 1
Introduction
Overview
The DIO-16.PCI provides 8 reed relays that can latch power, data or other
electronic signals for control applications and 8 optically isolated inputs to
allow monitoring of off board switch closures, relays or for any other general
purpose monitoring needs. The DIO-16 is PC compatible and PCI slot.
What’s Included
The DIO-16.PCI is shipped with the following items. If any of these items is
missing or damaged, contact the supplier.
•DIO-16.PCI Adapter
•DIO Software
•User Manual
Installation
Card Setup
The DIO-16.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 Windows Users
Choose Install Software at the beginning of the CD and select the Digital I/O
software drivers and install SeaIO.
System Installation
The DIO-16.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 DIO-16.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.

Technical Description
Sealevel Systems DIO-16.PCI Page 2
Technical Description
The DIO-16.PCIprovides 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.
Features
•8 SPST relays
•1 eight bit optically isolated input port
•DB-37 Male connector
•Highly reliable 10 VA DIP reed relays utilized
•Multiple adapters can reside in same computer
•PCI 2.1 Bus compatible
Input Port
Port A is 8 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 also 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.
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).

Technical Description
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The input impedance of each isolated input is approximately 560 ohms
(factorydefault). The opto-isolator requires approximately 3 mA to turn on.
The maximum input current is 60 mA. Two things to consider when selecting
the input resistor:
1. The first is turn on voltage for the circuit to sense.
2. 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 current: 3 mA
Isolator diode drop: 1.1 V
Resistor power Max: .25 W
Turn on Voltage = diode drop + (turn on current) x (resistance)
Or: 1.1 + (.003) x R
Maximum voltage = square root of (.25 (resistor value))
The following table shows four common input resistors and the ranges
associated with each.
Input Resistor
(Ohms) Min Turn-On (Volts) Max Input (Volts) Max Current (mA)
220 1.76 7 27
560* 2.8 12 20
1K 4.1 16 15
2.2K 7.7 24 10
*Factory default
Increasing the input resistor accordingly can increase the maximum input
voltage. Because socketed DIP resistor networks are utilized, they can easily
be replaced with a different value. This can be done at the factory, if necessary.
The input circuits are not intended for monitoring 120-volt AC circuits.

Technical Description
Sealevel Systems DIO-16.PCI Page 4
Sensor Input Port Pin Assignments (P3 DB-37 Male)
Port A Bit P1
02,20
13,21
24,22
35,23
46,24
57,25
68,26
79,27
Output Port (Reed Relay)
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. Writing a ‘1’ to the proper port bit can individually
energize each relay.
Relay Specifications
•Contact Power Ratings: 10 Watts Maximum
•Contact Voltage Maximum: 100 Volts DC or AC Maximum
•Contact Current Maximum: .5 Amps DC or AC RMS
•Contact Resistance, Initial: .15 Ohms
•Rated Life:
Low Load: 200 Million Closures
Maximum Load: 100 Million Closures
•Contact Speed:
Operate: .5 m Sec
Release: .5 m Sec
Bounce: .5 m Sec
•Maximum Operating Speed: 600 Hertz

Technical Description
Sealevel Systems DIO-16.PCI Page 5
Output Port (Reed Relay) Pin Assignments (P3 DB-37 Male)
Port C Bit Relay P2 Pin
0 K1 10,28
1K2 11,29
2K3 12,30
3 K4 13,31
4 K5 14,32
5K6 15,33
6 K7 16,34
7K8 17,35
Power and Ground Pin Assignments (P3 DB-37 Male)
Ground 18,36,37
+ 5 Volts 19
+ 12 Volts 1
Software
The DIO-16.PCI ships with Sealevel Systems’ SeaI/O suite of Windows
95/98/NT 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 95/98 and Windows NT, further simplifying
installation.
For DOS, QNX, Linux and other operating systems, please refer to the
software included with your card.

Technical Description
Sealevel Systems DIO-16.PCI Page 6
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 and relays for the 8002 specifically.
Complete documentation of the API can be found in its accompanying help file.
Interrupts
Interrupt sampling can be set up in the API. Port A bit zero is the interrupt
source. Refer to the API help file for more detailed information.
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.
Tables : 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 ) 0 ( R ) Input Port (Opto Input)
B1 Unused
C2 ( R/W ) 0 ( W ) Output Port (Reed Relays)
DUnused

Technical Description
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API Bit # Absolute
Address (function) API Bit # Relative Address (function) Port Bit
0 ( R ) 0(R ) A0 -Input
1 ( R ) 1 ( R ) A1 -Input
2 ( R ) 2 ( R ) A2 -Input
3 ( R ) 3 ( R ) A3 -Input
4 ( R ) 4 ( R ) A4 -Input
5 ( R ) 5 ( R ) A5 -Input
6 ( R ) 6 ( R ) A6 -Input
7 ( R ) 7 ( R ) A7 -Input
8 ( R ) 8 ( R ) B0 -Input
16 ( R/W ) 0 ( W ) C0 -Output
17 ( R/W ) 1 ( W ) C1 -Output
18 ( R/W ) 2 ( W ) C2 -Output
19 ( R/W ) 3 ( W ) C3 -Output
20 ( R/W ) 4 ( W ) C4 -Output
21 ( R/W ) 5 ( W ) C5 -Output
22 ( R/W ) 6 ( W ) C6 -Output
23 ( R/W ) 7 ( W ) C7 -Output

Technical Description
Sealevel Systems DIO-16.PCI Page 8
Direct Hardware Control
In systems where the users program has direct access to the hardware (DOS)
the table below gives the mapping and functions which the 8002 provides. 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 (direct) :
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 (of
sufficient magnitude, covered above) is applied it returns a zero on that bit.
Reading the Outputs (relays) (direct) :
The relay ports return the ones complement of the value that is currently being
used to drive the relays. When using the API the value is returned not the
complement of the value.
Writing the Outputs (relays) (direct) :
The output ports are the only ports that can be written. The relays on a standard
8002 are normally open. To close a relay a one must be written to the
appropriate bit.
Interrupts
Interrupts can be set up as shown on the following page. Port A bit zero is the
interrupt source.

Technical Description
Sealevel Systems DIO-16.PCI Page 9
Register Description
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}
Table : Hardware register map.
RD = read
WR = write
RD/WR = read or write
Note: 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) Input port.
PCD0-7= Port C (Base+2) Output port.
IRC0-1= Interrupt Mode select (Base+5)
IRC1 IRC0 Interrupt Type
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). Bit can not be written.

Specifications
Sealevel Systems DIO-16.PCI Page 10
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 280mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Board Length 5.00 inches (12.700 cm.)
Board Height including Goldfingers 3.900 inches (9.906 cm.)
Board Height excluding Goldfingers 3.575 inches (9.080 cm.)
Board Weight 3.2 ounces (90.71g)

Appendix A -Troubleshooting
Sealevel Systems DIO-16.PCI Page 11
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 DIO-16.PCI Page 12
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 DIO-16.PCI Page 13
Appendix C -Silk-Screen
3.90"
5.00"

Appendix D -Compliance Notices
Sealevel Systems DIO-16.PCI Page 14
Appendix D -Compliance Notices
Federal Communications Commission Statement
FCC -This equipment has been tested and found to comply with the limits for
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference
to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference. In such case the user will be required to
correct the interference at his own expense.
EMC Directive Statement
Products bearing the CE Label fulfill the requirements of the
EMC directive (89/336/EEC) and of the low-voltage directive
(73/23/EEC) issued by the European Commission.
To obey these directives, the following European standards must be met:
•EN55022 Class A-“Limits and methods of measurement of radio
interference characteristics of information technology equipment”
•EN55024-‘Information technology equipment Immunity
characteristics Limits and methods of measurement.
•EN60950 (IEC950) -“Safety of information technology
equipment, including electrical business equipment”
Warning
This is a Class A Product. In a domestic environment this product may
cause radio interference in which case the user may be required to take
adequate measures.
Always use cabling provided with this product if possible. If no cable is
provided or if an alternate cable is required, use high quality shielded cabling to
maintain compliance with FCC/EMC directives.

Warranty
Sealevel Systems DIO-16.PCI Page 15
Warranty
Sealevel Systems, Inc. provides a lifetime warranty for this product. Should this
product fail to be in good working order at any time during this period, Sealevel
Systems will, at it's option, replace or repair it at no additional charge except as
set forth in the following terms. This warranty does not apply to products
damaged by misuse, modifications, accident or disaster.
Sealevel Systems assumes no liability for any damages, lost profits, lost
savings or any other incidental or consequential damage resulting from the use,
misuse of, or inability to use this product. Sealevel Systems will not be liable
for any claim made by any other related party.
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.
Sealevel Systems, Incorporated
155 Technology Place
P.O. Box 830
Liberty, SC 29657 USA
[phone] FAX: [phone]
www.sealevel.com
email: [email protected]
Technical Support is available from 8 a.m. to 5 p.m. Eastern time.
Monday -Friday
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in
this manual are the service mark, trademark, or registered trademark of the
respective company.
DIO-16.PCI is a trademark of Sealevel Systems, Incorporated.