SeaLevel SeaPort PLC-16 User manual

Part # 8206
Sealevel Systems, Inc
155 Technology Place
P.O. Box 830
Liberty, SC 29657 USA
Phone: [phone]
FAX: [phone]
www.sealevel.com
SeaPort PLC-16
USER MANUAL
TM

Contents
INTRODUCTION...................................................................................................1
OVERVIEW .................................................................................................................1
WHAT’S INCLUDED....................................................................................................1
INSTALLATION.................................................................................................1
TECHNICAL DESCRIPTION...............................................................................2
FEATURES..................................................................................................................2
Digital Inputs.................................................................................................2
Relay Outputs.................................................................................................2
DIGITAL INPUT PORT .................................................................................................3
OUTPUT PORT (RELAY).............................................................................................5
PROGRAMMING..................................................................................................6
APPLICATION PROGRAMMERS INTERFACE (API) .......................................................6
SERIAL STRING...........................................................................................................6
Relative Addressing Vs. Absolute Addressing...........................................6
TABLES: API PORT/BIT REFERENCE NUMBERS FOR ABSOLUTE AND RELATIVE
ADDRESSING..............................................................................................................7
3RD PARTY SOFTWARE SUPPORT................................................................................8
SPECIFICATION....................................................................................................8
SPECIFICATION....................................................................................................9
ENVIRONMENTAL SPECIFICATIONS.............................................................................9
POWER CONSUMPTION..............................................................................................9
MEAN TIME BETWEEN FAILURES (MTBF)................................................................9
APPENDIX A -TROUBLESHOOTING.............................................................10
APPENDIX B -HOW TO GET ASSISTANCE..................................................11

APPENDIX C -SILK-SCREEN...........................................................................12
APPENDIX D -COMPLIANCE NOTICES .......................................................13
FEDERAL COMMUNICATIONS COMMISSION STATEMENT........................................13
EMC DIRECTIVE STATEMENT ................................................................................13
WARRANTY.........................................................................................................14
© 2002c Sealevel Systems, Incorporated. All rights reserved.
Figures
Figure 1:Input Wiring.......................................................................................3
Figure 2:Output Wiring ....................................................................................5
Figure 3: Addressing Tables............................................................................7

Introduction and Installation
Sealevel Systems SeaPORT PLC-16 Page 1
Introduction
Overview
The SeaPORT 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 are also provided to allow monitoring off board
switch closures, relays or any other general purpose monitoring needs.
What’s Included
The SeaPORT PLC-16 ships with the following items. If any of these items is
missing or damaged, contact the supplier.
•SeaPORT PLC-16 Adapter
•Sealevel Software
•USB A to B Cable, Part number CA179
Installation
Be sure to install the software before the hardware.
Choose Install Software at the beginning of the CD. Select the Digital I/O
software drivers and install SeaIO prior to installing hardware. After installing
the software, connect the USB cable to the SeaPORT PLC-16 with the other
end connecting to any Upstream Type “A”USB port.The port can be either the
PC host or an upstream hub. When connected and properly enumerated, the
device’senable LED will come on. The device will not open properly until it
has been enumerated by the operating system.

Specifications
Sealevel Systems SeaPORT PLC-16 Page 2
Technical Description
The SeaPORT PLC-16 provides two parallel input/output (I/O) ports. The ports
are organized as ports Aand B. Port A is an input port interfaced to optically
isolated inputs, while port B is the relay output port. TheSeaPORT PLC-16 is a
line-powered device requiring a USB port capable of sourcing 500 mA.
Features
Digital Inputs
•Number of inputs: Eight.
•Type: Non-polarized, optically isolated from each other and from the
computer.
•Voltage Range: 0 to 24V DC or AC.
Relay Outputs
•Number of outputs: Eight.
•Contact Rating: 2A carry current, bifurcated, gold clad, silver
palladium.
•Contact Arrangement: SPDT (Single Pole Double Throw) Form C.
•Contact Resistance: Initial 100 milliohms maximum.
•Contact Life: mechanical: 10 million operations minimum.
•Contact Life: electrical: 5 million operations minimum at full load.
•Operating Time: 2 milliseconds maximum.
•Release Time: 1 milliseconds maximum.

Specifications
Sealevel Systems SeaPORT PLC-16 Page 3
Digital Input Port
Port A is an 8 bit input port connected to optically isolated input sensors. Each
sensor can be used to interface a voltage input and 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.
Figure 1:Input Wiring
Each sensor input pair has a current limiting resistor (2.7K ohm) that is used to
limit the input current to the opto-isolator. A current path is required to ‘turn-
on’ the sensor.
The opto-isolator has two ‘back-to-back’ diodes internally. This allows AC or
DC signals to be sensed, regardless of polarity.
2.7 K Ohm
1/2 Watt
Voltage input (5-24V)
Ground Reference
User Installable Capicator
10K
+5VDC
Ground

Specifications
Sealevel Systems SeaPORT PLC-16 Page 4
Input Voltage
The opto-isolator requires approximately 1 mA to turn on. The maximum input
current is 60 mA. Adding additional resistors to the input current limiting
resistor can increase the voltage to be sensed. Two things to consider when
selecting additional input resistance:
1. Turn on voltage for the circuit to sense.
2. The maximum input voltage. Maximum input voltage is a function of
power. The resistor must not allow the opto-isolator to be overdriven.
The following formulas apply:
Turn on current: 1 mA
Isolator diode drop: 1.1 V
Resistor power Max: 1/2 W
Turn on Voltage = diode drop + (turn on current) x (resistance)
Maximum voltage = square root of (resistor value * resistor power)
Default Configuration :
Input Turn on Voltage = 1.1V*0.001A*2700ohm = 3.8 VDC
Current Draw = (Voltage –1.1)/2700
1 mA @ 3.8 VDC
4 mA @ 12 VDC
8.5 mA @ 24 VDC
Absolute Max Voltage (Inputs) =
square root of (2700ohm * 0.5w) = 36VDC
The input circuits arenot for monitoring 120-volt AC circuits.

Specifications
Sealevel Systems SeaPORT PLC-16 Page 5
Output Port (Relay)
The SEAPORT PLC-16 provides 8 Form C (SPDT) Electro-mechanical relays.
These relays have three connections; Normally Open (NO), Normally Closed
(NC) and a 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.
Figure 2:Output Wiring
+5 V
2
5
4
1
3
HD-44
1
16
31
Output Bit D0

Specifications
Sealevel Systems SeaPORT PLC-16 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. The purpose of this section of the manual is to help the customer
with the mapping of the API to the actual I/O and relays for the SEAPORT PLC-
16 specifically. Complete documentation of the API can be found in the SeaI/O
help file.
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 a EEPROM
along with other critical information. This EEPROM is read during
enumeration. The device should not be unplugged during its enumeration due
to remote possibility that the data in the EEPROM could be corrupted if power
is removed during a read/write cycle to the EEPROM. Enumerator 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 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.
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 0; Port #1 refers to the I/O address 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.

Specifications
Sealevel Systems SeaPORT PLC-16 Page 7
Tables: API Port/bit reference numbers for Absolute and
Relative Addressing
R = Read
W = Write
R/W = Read or Write
Figure 3: Addressing Tables
Port API Port # Absolute
Address (function) API Port # Relative Address (function) Port Type
A0 ( R ) 0 ( R ) Input Port (Opto Input)
B1 ( R/W ) 0 ( W ) Output Port (Form C Relays)
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/W ) 0 ( W ) B0 –Output (Change from NC to NO Pole)
9 ( R/W ) 1 ( W ) B1 –Output (Change from NC to NO Pole)
10 ( R/W ) 2 ( W ) B2 –Output (Change from NC to NO Pole)
11 ( R/W ) 3 ( W ) B3 –Output (Change from NC to NO Pole)
12 ( R/W ) 4 ( W ) B4 –Output (Change from NC to NO Pole)
13 ( R/W ) 5 ( W ) B5 –Output (Change from NC to NO Pole)
14 ( R/W ) 6 ( W ) B6 –Output (Change from NC to NO Pole)
15 ( R/W ) 7 ( W ) B7 –Output (Change from NC to NO Pole)

Specifications
Sealevel Systems SeaPORT PLC-16 Page 8
3rd Party Software Support
Third party software support for many HMI/MMI and other process control
software is included on the product installation CD. For the most up to date
information on third party software support, please visit
http://www.sealevel.com/3rdpartysw.htm.

Specifications
Sealevel Systems SeaPORT PLC-16 Page 9
Specification
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 500 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)

Appendix A -Troubleshooting
Sealevel Systems SeaPORT PLC-16 Page 10
Appendix A -Troubleshooting
Following these simple steps can eliminate most common problems.
Install software first. After installing the software then proceed to adding the
hardware. This places the required installation files in the correct locations.
1. Read this manual thoroughly before attempting to install the adapter in
your system.
2. Use Device Manager under Windows to verify proper installation.
3. Use the SeaIO control panel applet for card identification and
configuration.
4. 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.

Appendix B -How To Get Assistance
Sealevel Systems SeaPORT PLC-16 Page 11
Appendix B -How To Get Assistance
1. Begin by reading through the Trouble Shooting Guide in Appendix
A. If assistance is still needed please see below.
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 provides an FAQ section on its web site. Please
refer to this for many commonly asked questions. This section
can be found at http://www.sealevel.com/faq.htm .
4. Visit Sealevel’s website at www.sealevel.com for the latest
software updates and newest manuals.
5. 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 SeaPORT PLC-16 Page 12
Appendix C -Silk-Screen

AppendixD -Compliance Notices
Sealevel Systems SeaPORT PLC-16 Page 13
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 SeaPORT PLC-16 Page 14
Warranty
Sealevel Systems, Inc. provides a limited lifetime
warranty. 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.
SeaPORT PLC-16 is a trademark of Sealevel Systems, Incorporated.