SeaLevel SeaPORT REL-16 User manual

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© Sealevel Systems, Inc. 3095 Manual | SL9027 9/2022
REL-16
User Manual | 3095

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© Sealevel Systems, Inc. 3095 Manual | SL9027 9/2022
Contents
CONTENTS............................................................................................................................................................................................................................2
INTRODUCTION...................................................................................................................................................................................................................3
BEFORE YOU GET STARTED..............................................................................................................................................................................................4
CARD SETUP........................................................................................................................................................................................................................6
INSTALLATION ......................................................................................................................................................................................................................7
PROGRAMMING THE REL-16 .........................................................................................................................................................................................10
ELECTRICAL CHARACTERISTICS...................................................................................................................................................................................13
SPECIFICATIONS...............................................................................................................................................................................................................14
EXAMPLE CIRCUITS .........................................................................................................................................................................................................15
APPENDIX A – TROUBLESHOOTING.............................................................................................................................................................................16
APPENDIX B – HOW TO GET ASSISTANCE...................................................................................................................................................................17
APPENDIX C – SILK SCREEN – 3095 PCB .................................................................................................................................................................18
APPENDIX D – COMPLIANCE NOTICES........................................................................................................................................................................19
WARRANTY ........................................................................................................................................................................................................................20

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Introduction
The REL-16 provides 16 reed relay outputs. The outputs offer 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 REL-16 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 on CD
with the REL-16 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 ISA Digital I/O Products
Model No.
Part No.
Description
DIO-16
(P/N 3096)
-8 Reed Relay Outputs / 8 Opto-Isolated Inputs
ISO-16
(P/N 3094)
- 16 Optically Isolated Inputs
DIO-32B
(P/N 3093)
- 16 Reed Relay Outputs / 16 Opto-Isolated
Inputs
REL-16
(P/N 3098)
- 32 Switched Relay Outputs
PIO-48
(P/N: 4030)
-- 48 TTL Inputs/Outputs

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Before You Get Started
What’s Included
The REL-16 is shipped with the following items. If any of these items is missing or damaged, please
contact Sealevel for replacement.
•REL-16 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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Optional Items
Depending upon your application, you are likely to find one or more of the following items useful for
interfacing the REL-16 to real-world signals. All items can be purchased from our website
(www.sealevel.com) or by calling [phone].
•DB-37 Male to DB-37 Female 6’ Extension Cable (Item# CA112)
This cable extends the DB-37 connector on the CA172 cable an additional six feet and is pinned
one-to-one.
•DB-37 Male/Female Terminal Block (Item# TB02-KT)
Break out serial and digital connectors to 37 screw terminals for easy field connection. The TB02
terminal block is designed with both DB37 male and female connectors, therefore; it can be used
with any DB37 board regardless of the board's port gender.
•Cable and Terminal Block Kit (Item# 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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Card Setup
The REL-16 contains several jumper straps for each port that must be set for
proper operation.
Address Selection
The REL-16 occupies at total of 2 I/O locations. The DIP-switch (SW1) is used to set the base address for
these locations. Be careful when selecting the base address as some selections conflict with existing PC
ports. The following table shows several examples that usually do not cause a conflict.
Address
Binary
Switch Settings
1
2
3
4
5
6
7
8
100-104
01 0000 00xx
Off
On
On
On
On
On
On
On
104-108
01 0000 01xx
Off
On
On
On
On
On
On
Off
200-204
10 0000 00xx
On
Off
On
On
On
On
On
On
280-283
10 1000 00xx
Off
On
Off
On
On
On
On
On
284-287
10 1000 01xx
Off
On
Off
On
Off
On
On
Off
2EC-2EF
10 1110 11xx
Off
On
Off
Off
Off
On
Off
Off
300-303
11 0000 00xx
Off
Off
On
On
On
On
On
On
320-323
11 0010 00xx
Off
Off
On
On
Off
On
On
On
388-38B
11 1000 10xx
Off
Off
Off
On
On
On
Off
On
3A0-3A3
11 1010 00xx
Off
Off
Off
On
Off
On
On
On
3A4-3A7
11 1010 01xx
Off
Off
Off
On
Off
On
On
Off
Address Selection Table
The following illustration shows the correlation between the DIP-switch setting and the address bits used
to determine the base address. In the example below, address 300 is selected as the base address. Address
300 in binary is XX 11 0000 00XX where X = a non-selectable address bit and address bit A9 is always a 1.
DIP-Switch Illustration
Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address, while leaving it ‘Off’ or ‘Open’
corresponds to a ‘1’.
1 2 3 4 5 6 7
ON
OFF
A9 A2
8

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Installation
Software Installation
Windows Installation
Do not install the Adapter in the machine until the software had been fully installed.
Only users running Windows 7 or newer should utilize these instructions for accessing and
installing the appropriate driver via Sealevel’s website. If you are utilizing an operating system
prior to Windows 7, please contact Sealevel by calling 864.843.4343 or emailing
[email protected] to receive access to the proper driver download and installation
instructions.
1. Begin by locating, selecting, and installing the correct software from the Sealevel software driver
database.
2. Select the Part Number (3095) for your device from the listing.
3. Click the ‘Install Drivers’ button.
4. The setup file will automatically detect the operating environment and install the proper
components.
5. A screen may appear with the declaration: “The publisher cannot be determined due to the
problems below: Authenticode signature not found.” Please select the ‘Yes’ button and proceed
with the installation. This declaration simply means that the Operating System is not aware of the
driver being loaded. It will not cause any harm to your system.
6. During setup, the user may specify installation directories and other preferred configurations. This
program also adds entries to the system registry that are necessary for specifying the operating
parameters for each driver. An uninstall option is also included to remove all registry/INI file entries
from the system.
To confirm that the SeaCOM driver has been successfully installed, click on the ‘Start’ button, and then
select ‘All Programs’. You should see the ‘SeaCOM’ program folder listed.
You are now ready to proceed with connecting the 3098 to your system. Refer to the Hardware
Installation section for details.
Windows NT Card Installation: After accomplishing the above steps, bring up the Control Panel
and double-click on the SeaIO Devices icon. To install a new card, click “Add Port”. Repeat this
procedure for as many SeaIO cards as you wish to install.

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Linux Installation
You MUST have “root” privileges to install the software and drivers.
The syntax is case sensitive.
SeaCOM for Linux can be downloaded here: https://www.sealevel.com/support/software-seacom-linux/.
It includes the README and the Serial-HOWTO help files (located at seacom/dox/howto). This series of
files both explains typical Linux serial implementations and informs the user about Linux syntax and
preferred practices.
User can use a program such as 7-Zip to extract the tar.gz file.
In addition, the software selectable interface settings can be accessed by referencing
seacom/utilities/3095mode.
To set up Linux to automatically load the driver; refer to a Linux manual concerning your specific distribution
for help.
For additional software support, including QNX, please call Sealevel Systems’ Technical Support, (864) 843-
4343. Our technical support is free and available from 8:00 AM - 5:00 PM Eastern Time, Monday through
Friday. For email support contact: [e-mail].

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Physical Installation
The adapter can be installed in any ISA PC 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 REL-16 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 REL-16 is now ready for use.

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Programming the REL-16
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. The software also includes 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 ReL-16. 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/SeaI/O/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.
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 3095 specifically. Complete documentation of the API can be found in its accompanying help file.
Digital I/O Interface
The REL-16 provides two output ports. The ports, which are reed relay output ports, are organized as ports
A and B. Assuming an I/O address of 302 Hex the following table shows the Port Addresses.

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PROGRAMMING THE REL-16, CONTINUED
Base Address
Hex
Decimal
Mode
300
768
301
769
Unused
Port A Address
302
770
Port B Address
303
771
Reed Relay Output Port
Output Ports (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.
Output Ports (Reed Relay) Pin Assignments (P2)
Port C Bit
Relay
P2 Pin
Port D Bit
Relay
P2 Pin
0
K16
2,20
0
K8
10,28
1
K15
3,21
1
K7
11,29
2
K14
4,22
2
K6
12,30
3
K13
5,23
3
K5
13,31
4
K12
6,24
4
K4
14,32
5
K11
7,25
5
K3
15,33
6
K10
8,26
6
K2
16,34
7
K9
9,27
7
K1
17,35
Ground
18,36,37
+ 5 Volts
19
+ 12 Volts
1

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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 REL-16 provides.
Function
Available
Port
Port
Address
Port Type
Base + 0
Unused
Base + 1
Unused
R/W
A
Base + 2
Output Port
R/W
B
Base + 3
Output Port
R/W = Read or Write
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.
Reading the Outputs
The relay ports return the ones complement of the value that is currently being used to drive the relays.
When using the API the actual value is returned not the complement of the value.

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Writing the Outputs:
The output ports are the only ports that can be written. The relays on a standard REL-16 are normally open.
To close a relay a one must be written to the appropriate bit.
Register Description
Address
Mode
D7
D6
D5
D4
D3
D2
D1
D0
Base+0
R
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+1
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+2
R/W
PCD7
PCD6
PCD5
PCD4
PCD3
PCD2
PCD1
PCD0
Base+3
R/W
PDD7
PDD6
PDD5
PDD4
PDD3
PDD2
PDD1
PDD0
Base+4
R
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+5
R
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+6
R
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Base+7
R
{0}
{0}
{0}
{0}
{0}
{0}
{0}
{0}
Electrical Characteristics
Features
•Selectable I/O port addressing from 100H – 3FFH
•2 sets of SPST relays with each having 8 Relays
•Highly reliable 10 VA DIP reed relays utilized
•Multiple adapters can reside in same computer
•All address, data and control signals are TTL compatible

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Specifications
Output Relays
Contact Max Power Rating 10W
Contact Voltage Maximum 100 VDC/VAC
Contact Current Maximum .5A AC/DC RMS
Contact Resistance, Initial .15 Ω
Rated Life 200 Million Closures
(Low Load)
100 Million Closures
(Maximum Load)
Contact Speed: Operate - .5mS Release - .5mS Bounce - .5 mS
Maximum Operating Speed 600 Hz
Environmental Specifications
Specification Operating Storage
Temperature Range 0º to 70º C -50º to 105º C
Power Requirements
Supply Line +5 VDC +12VDC
Rating 200 mA (Optional Use)
Physical Dimensions
Board length 4.9 inches (12.5 cm)
Board Height including Goldfingers 4.2 inches (10.7 cm)
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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Example Circuits
Output Circuit

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Appendix A – Troubleshooting
Sealevel Software is supplied with the Sealevel Systems adapter and will be used in the troubleshooting
procedures. By using this software and following these simple steps, most common problems can be
eliminated without the need to call Technical Support.
1. Install software first. After installing the software then proceed to adding the hardware. This
place 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.
5. The following are known I/O conflicts:
a. The 278 and 378 settings may conflict with your
printer I/O adapter.
b. 3B0 cannot be used if a Monochrome adapter is
installed.
c. 3F8-3FF is typically reserved for COM1:
d. 2F8-2FF is typically reserved for COM2:
e. 3E8-3EF is typically reserved for COM3:
f. 2E8-2EF is typically reserved for COM4:
If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, [phone].
Our technical support is free and available from 8:00 AM - 5:00 PM Eastern Time, Monday through Friday.
For email support contact: [e-mail].

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Appendix B – How To Get Assistance
The adapter should provide years of trouble-free service. However, in the event that it appears to be
functioning incorrectly, the following tips can eliminate most common problems without the need to call
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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Appendix C – Silk Screen – 3095 PCB

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Appendix D – Compliance Notices
Federal Communications Commission (FCC) Statement
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 the user’s 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”.
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 to prevent or correct the
interference.
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.

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Warranty
Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is
standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control
of manufacturing quality and the historically high reliability of our products in the field. Sealevel products
are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product
development, production, burn-in and testing. Sealevel achieved ISO-9001:2015 certification in 2018.
Warranty Policy
Sealevel Systems, Inc. (hereafter "Sealevel") warrants that the Product shall conform to and perform in
accordance with published technical specifications and shall be free of defects in materials and
workmanship for the warranty period. In the event of failure, Sealevel will repair or replace the product at
Sealevel's sole discretion. Failures resulting from misapplication or misuse of the Product, failure to adhere
to any specifications or instructions, or failure resulting from neglect, abuse, accidents, or acts of nature
are not covered under this warranty.
Warranty service may be obtained by delivering the Product to Sealevel and providing proof of purchase.
Customer agrees to ensure the Product or assume the risk of loss or damage in transit, to prepay shipping
charges to Sealevel, and to use the original shipping container or equivalent. Warranty is valid only for
original purchaser and is not transferable.
This warranty applies to Sealevel manufactured Product. Product purchased through Sealevel but
manufactured by a third party will retain the original manufacturer's warranty.
Non-Warranty Repair/Retest
Products returned due to damage or misuse and Products retested with no problem found are subject to
repair/retest charges. A purchase order or credit card number and authorization must be provided in order
to obtain an RMA (Return Merchandise Authorization) number prior to returning Product.
How to obtain an RMA (Return Merchandise Authorization)
If you need to return a product for warranty or non-warranty repair, you must first obtain an RMA number.
Please contact Sealevel Systems, Inc. Technical Support for assistance:
Available Monday – Friday, 8:00 AM to 5:00 PM EST
Phone [phone]
Email [e-mail]
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in this manual are the service
mark, trademark, or registered trademark of the respective company.