SeaLevel SeaLINK +2.SC User manual

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
SeaLINK +2.SC
User Manual | 2223

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Contents
CONTENTS............................................................................................................................................................................................................................2
INTRODUCTION...................................................................................................................................................................................................................3
BEFORE YOU GET STARTED..............................................................................................................................................................................................4
INSTALLATION & CONFIGURATION.................................................................................................................................................................................7
HARDWARE DESCRIPTION .............................................................................................................................................................................................14
SEALATCH™ USB .............................................................................................................................................................................................................15
ELECTRICAL SPECIFICATIONS ........................................................................................................................................................................................17
TECHNICAL SPECIFICATIONS.........................................................................................................................................................................................19
APPENDIX A –TROUBLESHOOTING.............................................................................................................................................................................20
APPENDIX B –HOW TO GET ASSISTANCE..................................................................................................................................................................24
APPENDIX C –ELECTRICAL INTERFACES....................................................................................................................................................................25
APPENDIX D –ASYNCHRONOUS COMMUNICATIONS.............................................................................................................................................26
APPENDIX E –CAD DRAWINGS - 2223.......................................................................................................................................................................27
APPENDIX F –COMPLIANCE NOTICES.........................................................................................................................................................................28
WARRANTY ........................................................................................................................................................................................................................29

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Introduction
Overview
Sealevel’s SeaLINK® 2223 USB to serial interface adapter offers an easy way to connect two serial devices
to a single USB port. All configuration and electrical interface selections are handled through the driver,
eliminating the need to open the enclosure to set jumpers or switches. Each serial port is software
configurable for RS-232, RS-422, or RS-485 (full and half duplex) with the electrical interface settings
maintained locally, allowing the host computer to be repaired or upgraded without reconfiguring the serial
ports. Additionally, the 2223 can be configured at one computer and deployed to other computers.
Sealevel SeaCOM USB software drivers and utilities make installation and operation easy for Windows 98SE,
ME, 2000, XP, and Vista operating systems. Once the software is installed, plug the 2223 into an available
USB port and each port is recognized as a standard COM port by the host system enabling compatibility
with legacy software. Serial data rates to 921.6K bps are supported.
To prevent accidental cable disconnection, the 2223 integrates a patent-pending SeaLATCH locking USB
port, which is fully compatible with standard USB cables. When used with the included USB cable with a
SeaLATCH USB type B connector, the metal thumbscrew provides a secure connection to the device.
Standard operating temperature range is 0°C to 70°C and extended temperature range (-40°C to +85°C) is
optional. Status LEDs display electrical interface selection and serial data activity for each port.
Features
•Each port is individually software configurable for RS-232, RS-422, and two-wire or four-wire RS-
485
•Electrical interface settings maintained across multiple computers
•High speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
•Automatic hardware RS-485 enable/disable
•Two DB9M connectors –each serial port supports data rates to 921.6K bps
•Powered by USB host connection
•Full modem control signals implemented in RS-232 mode
•Status LEDs indicate power, electrical interface, and serial data activity
•Flexible mounting options
•DIN rail clips are available as an option

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Before You Get Started
The SeaLINK+2.SC is shipped with the following items. If any of these items is missing or damaged, please
contact Sealevel for replacement.
•2223 –USB to RS-232/422/485 Two Port Serial Interface Adapter
•CA356 –USB Type A to SeaLATCH USB Type B Device Cable, 6’ in Length
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. 2223 Manual | SL9199 11/2021
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful. All items
can be purchased from our website (www.sealevel.com) or by calling our sales team at [phone].
Cables
DB9F to DB25M (RS-232) Extension Cable (Item# CA177)
The CA177 is a standard AT-style RS-232 modem cable
with a DB9F connector on one end and a DB25M
connector on the other. This cable is 72 inches length.
DB9F to DB9M Extension Cable (Item# CA127)
The CA127 allows users to extend a DB9 cable up to six
feet. The connectors are pinned one-to-one, so the cable
is compatible with any device or cable that has DB9
connectors.
DB9F (RS-422) to DB25M (RS-530) Cable (Item#
CA176)
The CA176 allows users to convert any Sealevel
RS- 422 DB9 Male asynchronous adapter to an
RS-530. DB25 Male pinout. This cable is ten
inches in length.

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Terminal Blocks
Terminal Block –DB9F to 9 Screw Terminals (Item# TB05)
The TB05 terminal block breaks out a DB9
connector to nine screw terminals to simplify
field wiring of serial connections including RS-
422 and RS-485 networks. The TB05 is designed
to connect directly to Sealevel DB9 serial cards
or any cable with a DB9M connector.
Terminal Block –Dual DB9F to 18 Screw Terminals (Item# TB06)
The TB06 terminal block breaks out dual DB9 connectors
to 18 screw terminals to simplify field wiring of serial
connections including RS-422 and RS-485 networks. The
TB06 is designed to connect directly to Sealevel dual port
DB9 serial cards or any cable with DB9M connectors.
Adapters and Converters
DB9F to RJ45 Modular Adapter (Item# RJ9S8)
The RJ9S8 is a DB9 female to RJ45 adapter. It can be
configured without tools, and it is an excellent choice for
using available infrastructure wiring.

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Installation & Configuration
Software Installation
Windows 98/ME/2000/XP/Vista™ Operating Systems
1. Begin by locating, selecting, and installing the correct software from the Sealevel software
driver database.
2. Select the Part Number (2223) for your device from the listing.
3. Click the ‘Download Now’ button. The SeaCOM software is available for Windows and Linux.
4. The setup file will automatically detect the operating environment and install the proper
components.
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 2223 to your system. Refer to the Hardware
Installation section for details.
Windows NT is not USB aware and thus cannot support this device.

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Hardware Installation
Do not connect the device to a USB port until the software has been successfully installed.
To install the 2223, plug the device into an available USB port using the supplied USB cable. The following
instructions were tested with Windows XP and may vary based on your version of Windows.
Once the device has been connected, the Found New Hardware wizard will appear first for the root hub and
then for each port that you are installing. Follow the instructions on the following page to finish installation.
The installation will repeat twice for the COM port. This is a limitation in the way Windows installs
external serial devices. .
1. Click on ‘Install the software automatically’ followed by the ‘Next’ button.
2. Windows will show a warning message that the hardware has not passed Windows
logo testing. Click on ‘Continue Anyway.’
3. Click on ‘Finish.’ Repeat this process for the remaining ports on the 2223.
All applications and drivers have been fully tested to maintain the integrity of your operating
system. Clicking on ‘Continue anyway’ will not harm your system in any way.
Verifying Installation
To confirm that the drivers have been successfully installed, you can look in Device Manager under ‘Ports
(COM & LPT)’ and the port you installed will be included on the list with the associated COM number. To
access Device Manager, follow the steps below:
1. Right-click on the ‘My Computer’ icon on your desktop or in the Start menu.
2. Click on ‘Properties’ in the fly out menu to launch the ‘System Properties’ window.
3. Click on the ‘Hardware’ tab and then click on the ‘Device Manager’ button.
4. When Device Manager launches, look under ‘Ports (COM & LPT)’ to verify that the serial port has
been correctly installed (screenshot of 2833 shown; only one port will be listed for the 2223).

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Hardware Installation, Continued
Your system will assign the next available COM numbers which may vary for each computer used.

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© Sealevel Systems, Inc. 2223 Manual | SL9199 11/2021
Hardware Configuration
Electrical Interface Mode Selection
The 2223 offers RS-232, RS-422, and RS-485 (full and half duplex) modes. The electrical interface is a
software selectable feature that can be accessed and changed using the Sealevel SeaCOM driver via Device
Manager. To select the electrical interface, follow the steps below:
1. Open Device Manager and locate ‘Ports (COM&LPT)’ following the steps above. You should see
the 2223’s port listed.
2. Select the port by right-clicking on it and selecting ‘Properties’ from the fly out menu. The serial
port properties menu will appear.
3. Click on the ‘Interface Settings’ tab (screenshot of 2833 shown).
The Sealevel SeaCOM driver adds the ‘Interface Settings’ tab. If this tab is missing, SeaCOM is not
correctly installed.