SeaLevel DIO-16.PCI User manual

DIO-16.PCI

User Manual | 8002H

Contents

CONTENTS............................................................................................................................................................................................................................2

INTRODUCTION...................................................................................................................................................................................................................3

BEFORE YOU GET STARTED..............................................................................................................................................................................................4

SOFTWARE INSTALLATION ...............................................................................................................................................................................................6

HARDWARE INSTALLATION...............................................................................................................................................................................................7

PROGRAMMING THE DIO-16.PCI....................................................................................................................................................................................8

ELECTRICAL CHARACTERISTICS...................................................................................................................................................................................14

SPECIFICATIONS...............................................................................................................................................................................................................15

EXAMPLE CIRCUITS ..........................................................................................................................................................................................................17

APPENDIX A –TROUBLESHOOTING.............................................................................................................................................................................18

APPENDIX B –HOW TO GET ASSISTANCE..................................................................................................................................................................19

APPENDIX –SILK SCREEN –8002H PCB..................................................................................................................................................................20

APPENDIX D–COMPLIANCE NOTICES......................................................................................................................................................................... 21

WARRANTY ........................................................................................................................................................................................................................22

Introduction

Overview

The DIO-16.PCI provides 8 optically isolated inputs and 8 reed relay outputs. The inputs (rated for 10-30V)

protect the PC and other sensitive equipment from spikes and ground loop current that can be generated

in industrial environments, while the outputs provide high quality, long life, low current (10 Watt maximum),

dry contact switch closures. Reed relays are well suited for low current applications. The relays are normally

open and will close when energized. The board is PCI bus specification 2.1 compliant.

The DIO-16.PCI is designed to be used with a variety of Operating Systems including Windows

98/NT/ME/2000/XP, Linux, and DOS. The SeaI/O API (Application Programmer Interface) included in

Sealevel’s software provides a variety of useful high-level function calls implemented as a Windows

dynamic link library (DLL) and as a Linux kernel module and library. In addition to the API, SeaI/O includes

sample code and utilities to simplify software development.

Other Sealevel PCI Digital I/O Products

PIO-24.PCI

(P/N 8008)

- 24 TTL Inputs/Outputs

PIO-32.PCI

(P/N 8010)

- 32 TTL Inputs/Outputs

PIO-48.PCI

(P/N 8005)

-- 48 TTL Inputs/Outputs

PIO-96.PCI

(P/N 8009)

-- 96 TTL Inputs/Outputs

REL-16.PCI

(P/N 8003)

- 16 Reed Relay Outputs

DIO-32.PCI

(P/N 8004)

-16 Reed Relay Outputs/16 Opto-Isolated Inputs

ISO-16.PCI

(P/N 8006)

- 16 Opto-isolated Inputs

REL-32.PCI

(P/N 8007)

- 32 Reed Relay Outputs

PLC-16.PCI

(P/N 8011)

- 8 Form C Relay Outputs/8 Opto-isolated Inputs

Before You Get Started

What’s Included

The DIO-16.PCI is shipped with the following items. If any of these items is missing or damaged, please

contact Sealevel for replacement.

•DIO-16.PCI 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.

Optional Items

Depending upon your application, you are likely to find one or more of the following items useful for

interfacing the DIO-16.PCI to real-world signals. All items can be purchased from our website

(http://www.sealevel.com) or by calling (864) 843-4343.

•DB-37 Male to DB-37 Female 6’ Cable - (Part Number CA112)

−This cable extends the DB-37 connector on the REL-16.PCI to six

feet and is pinned one-to-one.

•DB-37 Male/Female Terminal Block (Part Number TB02-KT)

−Break out serial and digital connectors to 37 screw terminals for

easy field connection. The TB02 terminal block is designed with

both DB-37 male and female connectors, therefore; it can be

used with any DB-37 board regardless of the board's port

gender.

•Cable and Terminal Block Kit (Part Number KT101)

−For convenient and easier ordering, the KT101 includes the

TB02-KT terminal block and CA112 cable in a single kit.

Software Installation

For Windows Users

Begin by locating, selecting, and installing the SeaIO software from the Sealevel website. The SeaIO

Software Overview page provides information that will allow you to easily download the SeaIO Software for

Windows.

Other Operating Systems

Refer to the appropriate section of the Serial Utilities Software.

LINUX INSTALLATION

Refer to Linux Archives - Sealevel or download the SeaIO Software for Linux. This link contains valuable

information on installing your serial adapter in the various Linux releases. Also included is a series of files

explaining proper Linux syntax and typical Linux serial implementations.

For additional software support, please call Sealevel Systems’ Technical Support, (864) 843-4343. Our

technical support is free and available from 8:00AM-5PM Eastern Time, Monday through Friday. For

email support contact support@sealevel.com.

Hardware Installation

The adapter can be installed in any 5V PCI expansion slot.

Do not install the Adapter in the machine until the software has been fully installed.

1. Turn off PC power. Disconnect the power cord.

2. Remove the PC case cover.

3. Locate an available 5V PCI slot and remove the blank metal slot cover.

4. Gently insert the PCI adapter into the slot. Make sure that the adapter is seated properly.

5. After the adapter has been installed, the cables should be routed thru the opening in the

bracket. This bracket also features a strain relief function that should be used to prevent un-

expected cable removal.

6. Replace the screw you removed for the blank and use it to secure the adapter into the slot.

(This is required to ensure FCC Part 15 compliance.)

7. Replace the cover.

8. Connect the power cord

The DIO-16.PCI is now ready for use.

Programming the DIO-16.PCI

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. Also included in Sealevel’s software 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 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 DIO-16.PCI. 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 with SeaI/O.

Further documentation on these samples can be found by selecting “Start/Programs/SeaIO/Sample

Application Description”. Information about where the files are physically stored on your disk is also

included in this same file.

Programming for Linux

SeaI/O for Linux consists of two major parts: a kernel module and a library. The kernel module is a simple

IO pass-through device, allowing the library to handle the more sophisticated functions provided to SeaI/O

users. It is provided in a ‘tarball’ format and can easily be compiled and included in the kernel build.

Digital I/O Interface

The DIO-16.PCI provides two parallel input/output (I/O) ports. The ports are organized as ports A, B, C, and

D. Port A is an input port interfaced to optically isolated inputs, while port C is the reed relay output port.

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 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.

Programming the DIO-16.PCI, Continued

Each sensor input pair has a current limiting resistor that 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 PC as a high logic level (binary 1).

The input impedance of each isolated input is approximately 3.3K ohms (factory default). The opto-isolator

requires approximately 3mA 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 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 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 common input resistors and the ranges associated with each.

Input Resistor

Turn-On

Input Range

Max Input

Max Current

220 

1.8V

1.8 –7.0V

8.5V

27mA

560 

2.8V

2.8 –10.6V

12.9V

20mA

1K 

4.1V

4.1 –13.8V

16.9V

15mA

2.2K 

7.7V

7.7 –20.0V

24.5V

10mA

3.3K 

10.0V

10.0 –24.0V

30.0V

9mA

4.7K 

15.2V

15.2 –28.0V

35.0V

7mA

The turn-off voltage for all resistors is less than 1V.

Increasing the input resistor accordingly can increase the maximum input voltage. Because socketed DIP

resistors are utilized, they can easily be replaced with a different value. Sealevel, if necessary, can do this.

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.

Programming the DIO-16.PCI, Continued

Input Port Pin Assignments (DB-37 Male)

Port A Bit

2,20

3,21

4,22

5,23

6,24

7,25

8,26

9,27

Output Ports (Reed Relays)

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.

Output Port Pin Assignments

Port C Bit

Relay

P2 Pin

10,28

11,29

12,30

13,31

14,32

15,33

16,34

17,35

Power and Ground Pin Assignments

Ground

18,36,37

+ 5 Volts

+ 12 Volts

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