SEALEVEL SeaLINK PLC-16 Digital Interface Adapter User Manual
- June 5, 2024
- SEALEVEL
Table of Contents
SeaLINK PLC-16
User Manual | 8206 © Sealevel Systems, Inc. 8206 Manual | SL9015
7/2021
Introduction
The Sealink PLC-16 provides 8 Form C relays rated at 2A, making it suitable
for latching power, data, or other electronic signals for control
applications. Eight optically isolated inputs (rated for 5-30V) are also
provided to allow monitoring off board switch closures, relays, or any other
general purpose monitoring needs. The adapter is USB 1.1 compliant.
The SEALINK PLC-16 is designed to be used under Windows 98/ME/2000/XP. The
SeaI/O API (Application Programmer Interface) included in Sealevel’s software
provides a variety of useful high-level function calls implemented in a
Windows dynamic link library (DLL). This API gives access to the SeaLINK
PLC-16 I/O from Windows-based platforms such as Visual C++. In addition to the
API, SeaI/O includes an ActiveX control along with sample code and utilities
to simplify software development.
Other Sealevel USB to Digital I/O Products
| Model No. | Part No. | Description |
|---|---|---|
| Sealink DIO-16 | (P/N 8209) | – 8 Reed Relay Outputs/8 Opto-isolated Inputs |
| Sealink ISO-16 | (P/N 8207) | – 16 Opto-isolated Inputs |
| Sealink REL-16 | (P/N 8208) | – 16 Reed Relay Outputs |
| Sealink PIO-48 | (P/N 8203) | – 48 TTL Inputs/Outputs |
| Sealink PIO-96 | (P/N 8205) | – 96 TTL Inputs/Outputs |
Before You Get Started
What’s Included
The Sealink PLC-16 is shipped with the following items. If any of these items
are missing or damaged, please contact Sealevel for replacement.
- Sealink PLC-16 Adapter
- USB A to B Cable, Part# CA179
Advisory Conventions
Warning
The highest level of importance is 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 is 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 is used to provide background information,
additional tips, or other non-critical facts that will not affect the use of
the product.
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful for interfacing the Sealink PLC-16 to real-world signals. All items can be purchased from our website (www.sealevel.com) or by calling 864-843-4343.
-
DIN Rail Clips (Part Number DR102)
A pair of brackets, clips, and hardware is necessary for DIN rail mounting the Sealink PLC-16. -
2U 19” Rack Tray (Part Number RK2U)
Standard 2U rack tray for supporting Sealink and other devices. -
Clamp for Rack Tray (Part Number RK-CLAMP)
Metal clamp and necessary hardware to secure Sealink or other devices to the RK2U rack tray. -
High-Speed USB 2.0 4-Port Hub (Part Number HUB4)
AC powered 4-port USB hub, AC adapter, and USB cable. -
High-Speed USB 2.0 7-Port Hub (Part Number HUB7)
AC powered 7-port USB hub, AC adapter, and USB cable.
Software Installation
Windows Installation
Do not connect the Sealink PIO-96 Adapter to the host USB device until the
software has 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
support@sealevel.com to receive access to the
legacy driver download and installation instructions.
-
Begin by locating, selecting, and installing the correct software from the Sealevel software driver database.
-
Select the Part Number (#8206) for your adapter from the listing.
-
Select the download for the SeaIO Classic for Windows (Software: SeaIO Classic V5 – Windows – Sealevel.) The setup file will automatically detect the operating environment and install the proper components. Next (depending on your browser) select the ‘Run this program from its current location or ‘Open’ option. Follow the information presented on the screens that follow. 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 available to remove SeaIO files and
registry/INI file entries from the system. -
Go to the “Add New Hardware Wizard” in the Control Panel.
-
When the Wizard asks if you want Windows to search for the new hardware, choose “No, I want to select the hardware from a list.”
-
Scroll through the list of categorized hardware and select ‘SeaIO Devices.’ If this is the first SeaIO device you may need to select ‘Other Devices’ and ‘Sealevel Systems, Inc.’ instead of ‘SeaIO Devices.’
-
Click “Next.”
-
Select the card model and press “Next.”
-
The Wizard will guide you through a few more informational prompts; continue to click “Next” until it is completed.
-
Your card’s resource assignments may be adjusted through the Device Manager (if, for instance, you need to change the I/O port address Windows assigned when you installed the card).
-
Windows software installation is complete.
Windows NT is not USB aware and thus cannot support the Sealink PIO-96.
Physical Installation
The Sealink PIO-96 can be installed in any open USB port.
Do not plug the unit into a USB port until the software has been fully
installed.
- Simply connect the Sealink PIO-96 to your USB port with the supplied cable.
- The software drivers installed during setup will automatically recognize and configure the device.
- You should see one or more “New Hardware Found” windows, indicating the actual device being created.
- Next, view your system’s Device Manager.
- You should have a new ‘SeaIO 8206’ in the SeaI/O Device heading indicating the installation was successful.
The Sealink PLC-16 is now ready for use.
Programming the Sealink PLC-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.
Included in Sealevel’s software and drivers 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 the 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 Sealink
PLC-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 in the software for the SeaI/O. Further documentation on these
samples can be found by selecting “Start/Programs/SeaIO/Sample Application
Description.” If you have any problems locating these files, please contact
Sealevel’s Technical Support at
864-843-4343 or email
support@sealevel.com.
Digital I/O Interface
The Sealink PLC-16 provides two parallel input/output (I/O) ports. The ports
are organized as ports A and B. Port A is an input port interfaced to
optically isolated inputs, while port B is the relay output port. The Sealink
PLC-16 is a line-powered device requiring a USB port capable of sourcing 500
mA.
Serial String
Each device has an eight-digit alphanumeric serial string stored in non-
volatile memory. On the Windows platforms, this number is used to give each
unit a separate identity. This identity allows the device to be moved to any
USB port or hub port on your computer while retaining its device number. If a
device becomes damaged and is replaced the new device should be given the same
serial string as the device it is replacing. This string is stored in an
EEPROM along with other critical information. This EEPROM is read during
enumeration. The device should not be unplugged during its enumeration due to
the remote possibility that the data in the EEPROM could be corrupted if power
is removed during a read/write cycle to the EEPROM.
Enumeration is complete when the LED is lit.
The control panel utility provides the capability to read or modify this
string. However, setting the same string for two units connected to the same
computer will cause the second unit to fail enumeration, and make it invisible
to the operating system. Should this occur, unplug one unit, and set the
serial string for the other unit to a different string.
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 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 (2.7K ohm) that is used
to limit the input current to the optoisolator. The optoisolator 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 optoisolator to turn on, the output of the optoisolator 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 optoisolator, the output goes high,
and the port bit is read by the PC as a high logic level (binary 1).
The optoisolator requires approximately 1mA 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 the voltage for the circuit to sense, and the
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
optoisolator 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 the ranges associated with the resistor.
| Input Resistor | Turn-On | Input Range | Max Input | Max Current |
|---|---|---|---|---|
| 2.7KW | 3.0V | 5 – 30V | 37V | 13mA |
The turn-off voltage for all resistors is less than 1V.
Because hole resistors are utilized, they cannot be easily replaced. If
modification is necessary, Sealevel can do this for an additional charge.
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.
Output Ports (Form C Relays)
The Sealink PLC-16 provides 8 Form C (SPDT) Electro-mechanical relays. These
relays have three connections; Normally Open (NO), Normally Closed (NC) and
Common. The relays are all de-energized at power-on. Writing a logic value of
one or zero will change the state. Refer to the Application Programmers
Interface for more information. On/off status of the relays can be read back
by any read operation in the API.
Electrical Characteristics
Features
- 8 SPDT Form C relays
- Eight optically isolated inputs
- Removable screw terminals
- Powered by USB port
Specifications
Input Ports
| Turn On Current | 1 mA |
|---|---|
| Isolator Diode Drop | 1.1 VDC |
| Resistor Power Max | .5 W |
| Maximum Input Range | 5 – 30 VDC/VAC |
Output Relays
| Type | Bifurcated, gold clad, silver palladium |
|---|---|
| Contact Max Power Rating | 30 W DC/60 VA AC |
| Contact Voltage Maximum | 60 VDC/VAC |
| Contact Current Maximum | 2A AC/DC RMS |
| Contact Resistance, Initial | .10 Ω |
| Rated Life | Mechanical, minimum: 10 million closures |
Electrical, minimum:5 million closures (Full Load)
Contact Speed| Operate: .2 mS
Release: .1 mS
Bounce: .7 mS
Temperature Range
| Operating | 0°C – 70°C |
|---|---|
| Storage | -50°C – 105°C |
Power Consumption
| Supply line | +5 VDC |
|---|---|
| Rating | 500 mA |
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.
Example Circuits
Appendix A – Troubleshooting
Following these simple steps can eliminate the most common problems.
- Install the software first. After installing the software then proceed to add the hardware. This places the required installation files in the correct locations.
- Read this manual thoroughly before attempting to install the adapter in your system.
- Use Device Manager under Windows to verify proper installation.
- 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, 864-843-4343 Our technical support is free and available Monday through Friday from 8:00 AM – 5:00 PM, Eastern Time. For email support contact support@sealevel.com.
Appendix B – How To Get Assistance
Begin by reading through the Troubleshooting 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 website. 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 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.
Technical support is available Monday to Friday from 8:00 AM to 5:00 PM,
Eastern Time. Technical support can be reached at
864-843-4343. For email support contact
support@sealevel.com.
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 – 8206 PCB
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.
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.
The customer agrees to insure 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. The warranty is valid only for the original
purchaser and is not transferable.
This warranty applies to Sealevel manufactured Products. Products 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 the 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 864-843-4343
Email support@sealevel.com
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in
this manual are the service mark, trademark, or registered trademark of the
respective company.
© Sealevel Systems, Inc. 8206 Manual | SL9015 7/2021
Documents / Resources
|
SEALEVEL SeaLINK PLC-16 Digital Interface
Adapter
[pdf] User Manual
SeaLINK PLC-16, Digital Interface Adapter, SeaLINK PLC-16 Digital Interface
Adapter
---|---
References
- Sealevel - I/O & Computing Products, Engineering and Manufacturing
- FAQs - Sealevel
- Software Driver Search - Sealevel
- Software: SeaIO Classic V5 - Windows - Sealevel
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