SeaLevel PIO-48.PC104 User manual

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
PIO-48.PC104
User Manual | 3701

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
Contents
CONTENTS...........................................................................................................................................................2
INTRODUCTION ...................................................................................................................................................3
BEFORE YOU GET STARTED ...............................................................................................................................4
CARD SETUP ........................................................................................................................................................7
SOFTWARE INSTALLATION ................................................................................................................................9
PHYSICAL INSTALLATION................................................................................................................................11
DIGITAL I/O INTERFACE....................................................................................................................................12
PROGRAMMING THE PIO-48.PC104 ................................................................................................................15
ELECTRICAL CHARACTERISTICS .....................................................................................................................19
SPECIFICATIONS ...............................................................................................................................................20
EXAMPLE CIRCUITS ..........................................................................................................................................21
APPENDIX A –TROUBLESHOOTING................................................................................................................22
APPENDIX B –HOW TO GET ASSISTANCE .....................................................................................................23
APPENDIX C –SILK SCREEN –3701 PCB.......................................................................................................24
APPENDIX D –COMPLIANCE NOTICES ..........................................................................................................25
WARRANTY ........................................................................................................................................................26
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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
Introduction
The PIO-48.PC104 part number 3701 digital I/O interface provides 48 channels of buffered drive digital I/O
emulating 8255 mode zero. The PIO-48.PC104 can be utilized for a variety of control and automation
applications including control and monitoring of TTL devices (e.g., LEDs, small solenoids, small relays) and
interfacing to solid-state relay racks (SSRs) for high-power AC or DC loads.
The PIO-48.PC104’s 48 digital I/O channels are accessed via two 50-pin header connectors with industry-
standard pin out. Each header provides 24 bits of digital I/O divided into two eight-bit ports and two four bit
ports for upper and lower nibble. Each port may be individually configured via software command as input
or output to best match your particular application requirements.
The PIO-48.PC104 is designed to be used with a variety of Operating Systems including Windows
98/NT/ME/2000/XP and DOS. The SeaI/O API (Application Programmer Interface) is available upon
request and provides a variety of useful high-level function calls implemented as a Windows dynamic link
library (DLL). In addition to the API, SeaI/O includes sample code and utilities to simplify software
development.
Other Sealevel PC104 Digital I/O Products
Model
Part No.
Description
DIO-104.REL
(P/N 3710)
- 16 Reed Relays
DIO-104.OPTO
(P/N 3720)
- 16 Optically Isolated Inputs
DIO-32.104
(P/N 3730)
- 16 Optically Isolated Inputs/16 Reed Relays

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
Before You Get Started
What’s Included
The PIO-48.PC104 is shipped with the following items. If any of these items are missing or damaged,
please contact Sealevel for replacement.
•Item# 3701 –PIO-48.PC104 Adapter
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. 3701 Manual | SL9127 7/2021
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful for
interfacing the PIO-48.PC104 to real-world signals. All items can be purchased from our website
(www.sealevel.com) or by calling 864-843-4343.
For TTL applications:
•Terminal Block Kit - (Part Number KT107)
Kit includes the TB07 screw terminal block and CA167 ribbon cable for connecting one of the PIO-
48.PC104’s 50-pin header connectors to your I/O. 6” Snap track and DIN rail clips are included for
DIN rail mounting.
•IDC 50 to IDC 50 Pin 40" Ribbon Cable (Part Number CA167)
Interfaces each of the PIO-48.PC104’s 50-pin header connectors.
•Simulation/debug module (Part Number TA01)
Module allows monitoring status of output pins and controlling state of input pins. An LED
corresponding to each port bit illuminates to indicate state. Eight position DIP-switches are used
to generate input status changes.

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
For high-current, high-voltage applications:
•IDC 50 to IDC 50 Pin Ribbon Cable (Part Number CA167)
40” cable connects the PIO-96.PCI to solid-state relay racks equipped with 50-pin header
interface.
•IDC 50 to IDC 50 Pin Ribbon Cable (Part Number CA135)
40” cable connects the PIO-96.PCI to solid-state relay racks equipped with 50-pin edge connector.
•Solid-State Relay Racks:
Quad six position relay rack (Part Number PB24HQ)
Relay rack can accept up to six QSSRs for a total of 24 channels. Features a 50-pin header
connector for easy interface via 50-conductor ribbon cables.
Quad four position relay rack (Part Number PB16HQ)
Relay rack can accept up to four QSSRs for a total of 16 channels. Features a 50-pin header
connector for easy interface via 50-conductor ribbon cables.
•Quad Solid-State Relay Modules:
AC Input (Part Number IA5Q)
Provides 4 channels of discrete I/O interface to monitor AC inputs up to 140V @ 10mA.
DC Input (Part Number IB5Q)
Provides 4 channels of discrete I/O interface to monitor DC inputs from 3.3V to 32V.
AC Output (Part Number OA5Q)
Provides 4 channels of discrete I/O interface to control AC outputs up to 140V @ 3A.
DC Output (Part Number OB5Q)
Provides 4 channels of discrete I/O interface to control DC outputs up to 60V @ 3A.
•Simulation/debug module (Part Number TA01)
Module simulates the operation and load characteristics of a standard 24-channel relay rack. An
LED corresponding to each port bit illuminates to indicate state. Eight position DIP-switches are
used to generate input status changes.

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
Card Setup
Address Selection
The PIO-48.PC104 occupies 8 consecutive I/O locations. The DIP-switch (S1) is used to set the base
address for these locations and the IRQ mode options. 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.
A9
A8
A7
A6
A5
A4
Hex Address
Binary
1
2
3
4
5
6
100-107
01 0000 xxxx
On
Off
On
On
On
On
180-187
01 1000 xxxx
On
Off
Off
On
On
On
200-207
10 0000 xxxx
Off
On
On
On
On
On
280-287
10 1000 xxxx
Off
On
Off
On
On
On
300-307
11 0000 xxxx
Off
Off
On
On
On
On
380-387
11 1000 xxxx
Off
Off
Off
On
On
On
3A0-3A7
11 1010 xxxx
Off
Off
Off
On
Off
On
Interface Selection
DIP-Switch positions ‘S’ and ‘M’ on switch S1 selects the interrupt mode for each adapter.
With the ‘S’ selected, the adapter is in a (S)hared interrupt mode, which allows more than one adapter to
access a single IRQ.
‘M’ indicates the inclusion of a 1K-ohm pull-down resistor required on one adapter when sharing interrupts.
Set the switch to ‘S’ for shared interrupt mode on all adapters sharing an IRQ. On one of the adapters sharing
an interrupt set the switches for both ‘S’ and for ‘M’. This provides the pull-down resistor circuit that makes
sharing IRQs possible. If you are using more than one compatible adapter in a bus you should only have
one adapter set to ‘M’.
1 2 3 4 5 6 7
ON
8
9 8 7 6 5 4 MS

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
IRQ Selection
The PIO-48.PC104 has an interrupt selection jumper, which should be set prior to use, if an interrupt is
required by your application software. Consult the user manual for the application software being used to
determine the proper setting.
IRQ3 IRQ4
IRQ7 IRQ5 IRQ9
IRQ10 IRQ11
IRQ12 IRQ15
The supplied driver for Windows and does not require, nor does it support interrupts. It is
recommended that this jumper be removed to prevent any resource conflicts.

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
Software Installation
Windows 98/ME/2000/XP Installation
1. Begin by locating, selecting, and installing the correct software from the Sealevel software driver
database.
2. Select the Part Number (3701) for your adapter from the listing.
3. Select ‘Download Now” for the SeaIO Classic for Windows. 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.
4. A screen may appear with the declaration: “The publisher cannot be determined due to the
problems below: Authenticode signature not found.” Please select the ‘Yes’ button and proceed
with the installation. This declaration simply means that the Operating System is not aware of the
driver being loaded. It will not cause any harm to your system.
5. 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 included to remove all registry/INI file entries
from the system.
6. If installing in NT, skip to ‘Windows NT Card Installation’ step 13.
7. Go to the “Add New Hardware Wizard” in the Control Panel.
8. 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.”
9. 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’.
10. Click “Next”.
11. Select the card model and press “Next”.
12. The Wizard will guide you through a few more informational prompts; continue to click “Next” until
it is completed.

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© Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021
13. 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).
14. Windows software installation is complete
15. Windows NT Card Installation: After accomplishing steps 1 –3, bring up the Control Panel and
double-click on the SeaIO Devices icon. To install a new card, click “Add Port”. Repeat this
procedure for as many SeaIO cards as you wish to install.