SeaLevel ISO-16 User manual

ISO-16™
USER’S MANUAL
Part Number 3094
Sealevel Systems, Inc Phone: [phone]
155 Technology Place FAX: [phone]
P.O. Box 830 www.sealevel.com
Liberty, SC 29657

Contents
INTRODUCTION ................................................................................1
OVERVIEW ....................................................................................................1
WHAT’S INCLUDED.......................................................................................1
FACTORY DEFAULT SETTINGS.......................................................................1
CARD SETUP.....................................................................................2
ADDRESS SELECTION.....................................................................................2
IRQ HEADER E1 ..........................................................................................3
INSTALLATION..................................................................................4
SOFTWARE INSTALLATION ...........................................................................4
For Windows Users................................................................................4
TECHNICAL DESCRIPTION ...............................................................5
FEATURES.....................................................................................................5
Sensor Input Ports Pin Assignments (P1)............................................7
PROGRAMMING...............................................................................8
APPLICATION PROGRAMMERS INTERFACE (API) ..........................................8
Interrupts..................................................................................................8
Relative Addressing Vs. Absolute Addressing.....................................8
DIRECT HARDWARE CONTROL...................................................................10
Reading the Inputs (direct) :.................................................................10
SPECIFICATIONS.............................................................................11
ENVIRONMENTAL SPECIFICATIONS..............................................................11
POWER CONSUMPTION...............................................................................11
MEAN TIME BETWEEN FAILURES (MTBF).................................................11
PHYSICAL DIMENSIONS...............................................................................11
APPENDIX A -TROUBLESHOOTING...............................................12
APPENDIX B -HOW TO GET ASSISTANCE.....................................13
APPENDIX C -SILK-SCREEN..........................................................14
APPENDIX D -SCHEMATIC ............................................................15
FEDERAL COMMUNICATIONS COMMISSION STATEMENT............................17
EMC DIRECTIVE STATEMENT ....................................................................17
WARRANTY....................................................................................18
Figures
Figure 1 -Address Selection Table...........................................................................2
Figure 2 -DIP-Switch Illustration.............................................................................2
Figure 3 -IRQ Header E1.........................................................................................3
©2002aSealevel Systems, Incorporated. All rights reserved.

Introduction
Sealevel Systems ISO-16 Page 1
Introduction
Overview
The ISO-16 16 optically isolated inputs to allow monitoring of off board switch
closures, relays or for any other general purpose monitoring needs.
Addressing, data and control signals are TTL compatible.
The ISO-16 is simple to operate. Inputs are simply read from their data ports.
What’s Included
The ISO-16 is shipped with the following items. If any of these items are
missing or damaged, contact the supplier.
•ISO-16 Interface Adapter
•Relay/Digital I/O Software
•User manual
Factory Default Settings
The ISO-16 factory default settings are as follows:
Base Address IRQ
300 5
To install the ISO-16 using factory default settings, refer to Installation on page
4.
For your reference, record installed ISO-16 settings below:
Base Address IRQ

Card Setup
Sealevel Systems ISO-16 Page 2
Card Setup
The ISO-16 contains several jumper straps for each port that must be set for
proper operation.
Address Selection
The ISO-16 occupies 4 consecutive 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
12345678
100-104 01 0000 00xx On Off On On On On On On
104-108 01 0000 01xx On Off On On On On On Off
200-204 10 0000 00xx Off On 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 On 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
Figure 1-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.
1 2 3 4 5 6 7
ON
OFF
A9 A2
8
Figure 2-DIP-Switch Illustration
Note: Setting the switch ‘On’ or ‘Closed’ corresponds to a ‘0’ in the address,
while leaving it ‘Off’ or ‘Open’ corresponds to a ‘1’.

Card Setup
Sealevel Systems ISO-16 Page 3
IRQ Header E1
Interrupts can be generated by Port A, bit 0 going low if enabled at jumper
location E1. Interrupt request signals 2/9 through 7 (IRQ 2/9 -7) can be
selected by placing the jumper in the appropriate position. Other inputs can be
‘wire OR ed.’ to also generate interrupts if desired. Please consult the factory
for more information.
2/9 3 4 5 6 7
E1
Figure 3-IRQ Header E1

Installation
Sealevel Systems ISO-16 Page 4
Installation
The ISO-16 can be installed in any ISA PC expansion slot. The ISO-16 contains
a DIP-switch (SW1) and IRQ selection which must be set prior to installation.
1. Turn off PC power. Disconnect the power cord.
2. Remove the PC case cover.
3. Locate an available slot and remove the blank metal slot cover.
4. Gently insert the ISO-16 into the slot. Make sure the adapter is seated
properly.
5. Replace the cover.
6. Connect the power cord.
Installation is complete.
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.

Technical Description
Sealevel Systems ISO-16 Page 5
Technical Description
The ISO-16 provides four parallel input/output (I/O) ports. The ports are
organized as ports A, B, C, and D. Port A and B are the input ports and are
interfaced to optically-isolated inputs, while ports C and D unused. Assuming
an I/O address of 300 Hex the following table shows the Port Addresses.
Base Address Hex Decimal Mode
Port A Address 300 768 Input Port (Opto Input)
Port B Address 301 769 Input Port (Opto Input)
Port C Address 302 770 Unused
Port D Address 303 771 Unused
Features
•Selectable I/O port addressing from 100H -3FFH
•2 eight bit input ports
•DB-37 female connector for optically isolated inputs
•8 bit slot connector
•Multiple adapters can reside in same computer
•All address, data and control signals are TTL compatible
Ports A and B are 8 bit-input ports 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, which 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 PCas a high logic level (binary 1).

Technical Description
Sealevel Systems ISO-16 Page 6
The input impedance of each isolated input is 560 ohms (factorydefault, this
can be modified by user or at factory if requested). The opto-isolator requires
approximately 3 mA to turn on. The maximum input current is 60 mA. Two
points must be considered when selecting the input resistor. The first is turn on
voltage for the circuit to sense, and 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 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) xR
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) Value Turn-On (Volts) Max Input Range (Volts) Max Current (mA)
220 1.76 to 7.4 2 to 6 29
560 2.8 to 11.8 3 to 12 19
1K 4.1 to 15. 8.4 to 16 15
2.2K 7.7 to 23.4 8 to 24 10
Increasing the input resistor accordingly can increase the maximum input
voltage. Because removable/replaceable 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 designed for monitoring 120-volt
AC circuits and damage will occur if connected to a 120-volt AC circuit.

Technical Description
Sealevel Systems ISO-16 Page 7
Sensor Input Ports Pin Assignments (P1)
Port A Bit P1 Port B Bit P1
018,37 010,29
117,36 19, 28
216,35 28,27
315,34 37,26
414,33 46,25
513,32 55,24
612,31 64,23
711,30 73,22
Ground 2,20,21
+ 12 Volts 19
+ 5 Volts 1

Technical Description
Sealevel Systems ISO-16 Page 8
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 input for the 3094 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.
Because the 3094 does not have any output ports, the mapping of relative and
absolute addressing is the same.

Technical Description
Sealevel Systems ISO-16 Page 9
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 ( R ) 1 ( R ) Input Port
API Bit # Absolute
Address (function) API Bit # Relative Address (function) Port Bit
0 ( R ) 0 ( R ) A0
1 ( R ) 1 ( R ) A1
2 ( R ) 2 ( R ) A2
3 ( R ) 3 ( R ) A3
4 ( R ) 4 ( R ) A4
5 ( R ) 5 ( R ) A5
6 ( R ) 6 ( R ) A6
7 ( R ) 7 ( R ) A7
8 ( R ) 8 ( R ) B0
9 ( R ) 9 ( R ) B1
10 ( R ) 10 ( R ) B2
11 ( R ) 11 ( R ) B3
12 ( R ) 12 ( R ) B4
13 ( R ) 13 ( R ) B5
14 ( R ) 14 ( R ) B6
15 ( R ) 15 ( R ) B7

Technical Description
Sealevel Systems ISO-16 Page 10
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 3094 provides, a
base address of 300 was used. If a different base address is used then the port
addresses are calculated as shown in the table.
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.
R = Read
W = Write
R/W = Read or Write
Function
Available Port Address Hex Address Decimal Port Type
RA300 (Base + 0) 768 Input Port (Opto Input)
RB301(Base + 1) 769 Input Port

Specifications
Sealevel Systems ISO-16 Page 11
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 200 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Board length 4.90 inches (12.446 cm)
Board Height including Goldfingers 4.2 inches (10.66 cm)
Board Height excluding Goldfingers 3.9 inches (9.906 cm)
Note:Please see Appendix C for board layout and dimensions.

Appendix A -Troubleshooting
Sealevel Systems ISO-16 Page 12
Appendix A -Troubleshooting
1. Identify all I/O adapters currently installed in your system. This includes
your on-board serial ports, controller cards, sound cards etc.
2. Configure your Sealevel Systems adapter so that there is no conflict with
currently installed adapters. No two adapters can occupy the same I/O
address.
3. Make sure the Sealevel Systems adapter is securely installed in a
motherboard slot.
4. The following are known I/O conflicts:
•The 278 and 378 settings may conflict with your printer I/O
adapter.
•3B0 cannot be used if a Monochrome adapter is installed.
•3F8-3FF is typically reserved for COM1:
•2F8-2FF is typically reserved for COM2:
•3E8-3EF is typically reserved for COM3:
•2E8-2EF is typically reserved for COM4:

Appendix B -How To Get Assistance
Sealevel Systems ISO-16 Page 13
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 ISO-16 Page 14
Appendix C -Silk-Screen
4.2"
4.9"
3.9"

Appendix D -Schematic
Sealevel Systems ISO-16 Page 15
Appendix D -Schematic

Appendix D -Schematic
Sealevel Systems ISO-16 Page 16

Appendix E -Compliance Notices
Sealevel Systems ISO-16 Page 17
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 ISO-16 Page 18
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.
ISO-16 is a trademark of Sealevel Systems, Incorporated.