SeaLevel REL-32 User manual

REL-32™
USER’S MANUAL
Part Number 3098
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
OPTIONS HEADER................................................................................3
HEADER JP1.......................................................................................4
OPTIONAL CABLE CONNECTOR P4......................................................4
INSTALLATION.......................................................................... 5
SOFTWARE INSTALLATION..................................................................5
For Windows Users.......................................................................5
TECHNICAL DESCRIPTION ....................................................... 6
FEATURES ...........................................................................................6
CONNECTOR PIN ASSIGNMENTS...........................................................7
PROGRAMMING....................................................................... 8
APPLICATION PROGRAMMERS INTERFACE (API).................................8
Relative Addressing Vs. Absolute Addressing............................8
DIRECT HARDWARE CONTROL..........................................................10
Reading the Outputs (relays) (direct) :......................................10
Writing the Outputs (relays) (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 -ELECTRICAL INTERFACE................................ 14
RELAY SPECIFICATIONS.....................................................................14
APPENDIX D -SILK-SCREEN.................................................. 15
APPENDIX E -SCHEMATIC..................................................... 16
WARRANTY............................................................................ 22
Trademarks...................................................................................22

Figures
Figure 1 -Address Selection Table..................................................................2
Figure 2 -DIP-Switch Illustration.....................................................................2
Figure 3 -Options Header P1-P3 .....................................................................3
Figure 4 -Header JP1.......................................................................................4
Figure 5 -DB-37 Connector Pin Assignments.................................................7
©Copyright Sealevel Systems, Incorporated 2002a. All rights reserved.

Introduction
Sealevel Systems REL-32 Page 1
Introduction
Overview
The REL-32 provides 32 reed relays that can latch power, data or other
electronic signals for control applications. The REL-32 is PC compatible
and fits any ISA or EISA slot. Addressing, data and control signals are TTL
compatible.
The REL-32 is simple to operate. By writing instruction bytes to the I/O
port addresses, the reed relays are energized or de-energized.
What’s Included
The REL-32 is shipped with the following items. If any of these items are
missing or damaged, contact the supplier.
•REL-32 Relay Interface Adapter
•3.5” DIO Diskette
•User manual
Factory Default Settings
The REL-32 factory default settings are as follows:
Base Address
300
To install the REL-32 using factory default settings, refer to Installation
on page 5.
For your reference, record installed REL-32 settings below:
Base Address

Card Setup
Sealevel Systems REL-32 Page 2
Card Setup
The REL-32 contains several jumper straps for each port which must be
set for proper operation.
Address Selection
The REL-32 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 SW1 Switch Position Setting
Hex A8 A3 654321
280-283 0 1 0 0 0 0 On Off On On On On
288-28A 0 1 0 0 0 1 On Off On On On Off
2A0-2A3 0 1 0 1 0 0 On Off On Off On On
328-32B 1 0 0 1 0 1 Off On On Off On Off
330-333 1 0 0 1 1 0 Off On On Off Off On
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 XXX 100000 XXX where X = a non-selectable address bit
and address bit A9 is always a 1.
ON
1 2 3 4 5 6
A3 A4
A5 A6 A7
A8
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".
Relay addressing
Base + 0 D0 -D7 =Switch 1 -Switch 8
Base + 1 D0 -D7 =Switch 9 -Switch 16
Base + 2 D0 -D7 =Switch 17 -Switch 24
Base + 3 D0 -D7 =Switch 25 -Switch 32

Card Setup
Sealevel Systems REL-32 Page 3
Options Header
P1 Function P2 Function P3 Function
1Switch 1B 1Common 1 1Switch 1A
2Switch 2B 2Common 1 2Switch 2A
3Switch 3B 3Common 1 3Switch 3A
4Switch 4B 4Common 1 4Switch 4A
5Switch 5B 5Common 1 5Switch 5A
6Switch 6B 6Common 1 6Switch 6A
7Switch 7B 7Common 1 7Switch 7A
8Switch 8B 8Common 1 8Switch 8A
9Switch 9B 9Common 2 9Switch 9A
10 Switch 10B 10 Common 2 10 Switch 10A
11 Switch 11B 11 Common 2 11 Switch 11A
12 Switch 12B 12 Common 2 12 Switch 12A
13 Switch 13B 13 Common 2 13 Switch 13A
14 Switch 14B 14 Common 2 14 Switch 14A
15 Switch 15B 15 Common 2 15 Switch 15A
16 Switch 16B 16 Common 2 16 Switch 16A
17 Switch 17B 17 Common 3 17 Switch 17A
18 Switch 18B 18 Common 3 18 Switch 18A
19 Switch 19B 19 Common 3 19 Switch 19A
20 Switch 20B 20 Common 3 20 Switch 20A
21 Switch 21B 21 Common 3 21 Switch 21A
22 Switch 22B 22 Common 3 22 Switch 22A
23 Switch 23B 23 Common 3 23 Switch 23A
24 Switch 24B 24 Common 3 24 Switch 24A
25 Switch 25B 25 Common 4 25 Switch 25A
26 Switch 26B 26 Common 4 26 Switch 26A
27 Switch 27B 27 Common 4 27 Switch 27A
28 Switch 28B 28 Common 4 28 Switch 28A
29 Switch 29B 29 Common 4 29 Switch 29A
30 Switch 30B 30 Common 4 30 Switch 30A
31 Switch 31B 31 Common 4 31 Switch 31A
32 Switch 32B 32 Common 4 32 Switch 32A
33 GND 33 Common 1 33 5V/12V
34 GND 34 Common 2 34 5V/12V
35 GND 35 Common 3 35 5V/12V
36 GND 36 Common 4 36 5V/12V
Figure 3-Options Header P1, P2 and P3
Note: The REL-32 is shipped with jumpers connecting the first 36 pins of
headers P1 and P2. This connects the B-side of the relay banks to
ground, which appear at the on-board DB-37.

Card Setup
Sealevel Systems REL-32 Page 4
Header JP1
Header JP1 provides a means of connecting +5 VDC and +12 VDC from
the PC bus, to the Options Header. The center pin of this header is
connected to P3 pins 33-36.
JP1
Figure 4-Header JP1 (Factory Default +5V)
Optional Cable Connector P4
Discrete access to both sides of all relays is provided by attaching the
optional cable (CA-108) to pin header P4 with the colored edge of the
ribbon cable attached to pin one. Removing all the jumpers connecting
row P1 to P2 places the A-side of each relay at the on-board DB-37 and
the B-side at the optional cable’s DB-37.

Installation
Sealevel Systems REL-32 Page 5
Installation
The REL-32 can be installed in any of the PC expansion slots. TheREL-32
contains a DIP-switch (SW1) 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 REL-32 into the slot. Make sure the adapter is
seated properly.
5. Cabling:
The REL-32 has an optional cable (CA-108) that may be installed
prior to use. This cable is keyed and can only be installed one
way. Please do not try to force this cable as damage to the
adapter may occur.
6. Replace the cover.
7. 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 REL-32 Page 6
Technical Description
The REL-32 Relay Output Adapter provides four parallel input/output
(I/O) ports. The ports are organized as ports A, B, C and D and are reed
relay output ports.
Features
•Selectable I/O port addressing from 200H -3F8H
•4 sets SPST relays with each set having 8 relays
•DB-37 female connector for relay outputs
•Highly reliable 10 VA DIP reed relays utilized
•8 bit slot connector
•Multiple adapters can reside in same computer
•All address, data and control signals are TTL compatible

Technical Description
Sealevel Systems REL-32 Page 7
Connector Pin Assignments
DB-37A Function Common DB-37B Function Common
1Ground N/A 1Ground N/A
2Switch 2A 12Switch 2B 1
3Switch 4A 13Switch 4B 1
4Switch 6A 14Switch 6B 1
5Switch 8A 15Switch 8B 1
6Switch 10A 26Switch 10B 2
7Switch 12A 27Switch 12B 2
8Switch 14A 28Switch 14B 2
9Switch 16A 29Switch 16B 2
10 Switch 18A 310 Switch 18B 3
11 Switch 20A 311 Switch 20B 3
12 Switch 22A 312 Switch 22B 3
13 Switch 24A 313 Switch 24B 3
14 Switch 26A 414 Switch 26B 4
15 Switch 28A 415 Switch 28B 4
16 Switch 30A 416 Switch 30B 4
17 Switch 32A 417 Switch 32B 4
18 Common 2 N/A 18
19 Common 4 N/A 19
20 Switch 1A 120 Switch 1B 1
21 Switch 3A 121 Switch 3B 1
22 Switch 5A 122 Switch 5B 1
23 Switch 7A 123 Switch 7B 1
24 Switch 9A 224 Switch 9B 2
25 Switch 11A 225 Switch 11B 2
26 Switch 13A 226 Switch 13B 2
27 Switch 15A 227 Switch 15B 2
28 Switch 17A 328 Switch 17B 3
29 Switch 19A 329 Switch 19B 3
30 Switch 21A 330 Switch 21B 3
31 Switch 23A 331 Switch 23B 3
32 Switch 25A 432 Switch 25B 4
33 Switch 27A 433 Switch 27B 4
34 Switch 29A 434 Switch 29B 4
35 Switch 31A 435 Switch 31B 4
36 Common 1 N/A 36 Common 1 N/A
37 Common 3 N/A 37
Figure 5-DB-37 Connector Pin Assignments
In the REL-32 adapter’s default setting, all relay connections appear at the
on-board DB-37.
Note: Off-board and on-board pin connections are identical except that
commons 2, 3, and 4 do not appear on the B-side connector.

Technical Description
Sealevel Systems REL-32 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 relays for the 3098 specifically.
Complete documentation of the API can be found in its accompanying
help file.
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.
Due to the fact that the 3098 has no inputs the relative and absolute
address for each relay are the same.

Technical Description
Sealevel Systems REL-32 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/W ) 0 ( R ) Relay 1-Relay 8
B1 (R/W ) 1 ( R ) Relay 9 -Relay 16
C2 ( R/W ) 2 ( R ) Relay 17 -Relay 24
D3 ( R/W ) 3 ( R ) Relay 25 -Relay 32
API Bit # Absolute Address
(function) API Bit # Relative Address (function) Relay
0 ( R/w ) 0 ( R ) K1
1 ( R/w ) 1 ( R ) K2
2 ( R/w ) 2 ( R ) K3
3 ( R/w ) 3 ( R ) K4
4 ( R/w ) 4 ( R ) K5
5 ( R/w ) 5 ( R ) K6
6 ( R/w ) 6 ( R ) K7
7 ( R/w ) 7 ( R ) K8
8 ( R/w ) 8 ( R ) K9
9 ( R/w ) 9 ( R ) K10
10 ( R/w ) 10 ( R ) K11
11 ( R/w )) 11 ( R ) K12
12 ( R/w ) 12 ( R ) K13
13 ( R/w ) 13 ( R ) K14
14 ( R/w ) 14 ( R ) K15
15 ( R/w ) 15 ( R ) K16
16 ( R/W ) 16 ( R ) K17
17 ( R/W ) 17 ( R ) K18
18 ( R/W ) 18 ( R ) K19
19 ( R/W ) 19 ( R ) K20
20 ( R/W ) 20 ( R ) K21
21 ( R/W ) 21 ( R ) K22
22 ( R/W ) 22 ( R ) K23
23 ( R/W ) 23 ( R ) K24
24 ( R/W ) 24 ( R ) K25
25 ( R/W ) 25 ( R ) K26
26 ( R/W ) 26 ( R ) K27
27 ( R/W ) 27 ( R ) K28
28 ( R/W ) 28 ( R ) K29
29 ( R/W ) 29 ( R ) K30
30 ( R/W ) 30 ( R ) K31
31 ( R/W ) 31 ( R ) K32

Technical Description
Sealevel Systems REL-32 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 3098
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 Outputs (relays) (direct) :
The relay ports return the value that is currently being used to drive the
relays.
Writing the Outputs (relays) (direct) :
The relays on a standard 3098 are normally open. To close a relay a one
must be written to the appropriate bit.
R = Read
W = Write
R/W = Read or Write
Function
Available Port Address Hex Address Decimal Port Type
R/W A300 (Base + 0) 768 Relay 1-Relay 8
R/W B301(Base + 1) 769 Relay 9 -Relay 16
R/W C302 (Base + 2) 770 Relay 17 -Relay 24
R/W D303 (Base + 3) 771 Relay 25 -Relay 32

Specifications
Sealevel Systems REL-32 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 +12 VDC +5 VDC
Rating 50 mA 800 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Board length 13.33 inches (33.85 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 D for board layout and dimensions.

Appendix A -Troubleshooting
Sealevel Systems REL-32 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 REL-32 Page 13
Appendix B -How To Get Assistance
Please refer to Appendix A -Troubleshooting 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 forum on CompuServe
providing utilities and new product information. This forum
is accessed by typing “GO Sealevel” at the command
prompt.
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 [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.

Appendix C -Electrical Interface
Sealevel Systems REL-32 Page 14
Appendix C -Electrical Interface
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. Each relay can be
individually energized by writing a "1" to the proper port bit.
Relay Specifications
•Contact Power Ratings: 10 Watts Maximum
•Contact Voltage Maximum: 100 Volts DC or AC Maximum
•Contact Current Maximum: .5 Amps DC or AC RMS
•Contact Resistance, Initial: .15 Ohms
•Rated Life:
Low Load: 200 Million Closures
Maximum Load: 100 Million Closures
•Contact Speed:
Operate: .5 mSec
Release: .5 mSec
Bounce: .5 mSec
•Maximum Operating Speed: 600 Hertz

Appendix D -Silk-Screen
Sealevel Systems REL-32 Page 15
Appendix D -Silk-Screen
4.2"
13.33"
3.9"

Appendix E -Schematic
Sealevel Systems REL-32 Page 16
Appendix E -Schematic