SeaLevel 3547 User manual

C4-104.485+1

User Manual | 3547

Contents

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

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

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

CARD SETUP ........................................................................................................................................................8

INSTALLATION & CONFIGURATION.................................................................................................................14

HARDWARE INSTALLATION .............................................................................................................................16

ELECTRICAL SPECIFICATIONS.........................................................................................................................19

TECHNICAL SPECIFICATIONS..........................................................................................................................21

APPENDIX A –TROUBLESHOOTING................................................................................................................22

APPENDIX B –HOW TO GET ASSISTANCE .....................................................................................................23

APPENDIX C –ELECTRICAL INTERFACE ........................................................................................................24

APPENDIX D –ASYNCHRONOUS COMMUNICATIONS ..................................................................................25

APPENDIX E –SILK-SCREEN - 3547.................................................................................................................26

APPENDIX F –COMPLIANCE NOTICES...........................................................................................................27

WARRANTY ........................................................................................................................................................28

Introduction

The 3547 PC/104 serial interface provides four serial ports with 1,500VDC port-to-port isolation that protect

the host system from ground loops and voltage transients that are common in remote installations and

industrial environments.

For maximum versatility without opening the PC/104 stack, each port is software configurable for full-

duplex (4-Wire) RS-422 or RS-485. Half duplex (2-Wire) RS-485 mode is also supported. The ‘auto-enable’

circuit automatically handles the RS-485 driver, which eliminates the risk of bus contention and data

corruption. With the driver controlled in hardware, the RS-485 ports are treated as standard serial COM

ports by the operating system.

Features

•1,500VDC port-to-port isolation

•Each port is software configurable for 4-wire RS-422/485 or 2-wire RS-485

•16954 buffered UART with 128-byte FIFOs

•Automatic hardware RS-485 enable/disable

•UART support for 9-bit protocol

•Data rates to 921.6K bps

•Jumpers on each port for suppressing ECHO

•Four 10-pin vertical header connectors

•Extended temperature range available (-40°C - +85°C)

Before You Get Started

What’s Included

The 3547 is shipped with the following items. If any of these items are missing or damaged, please contact

Sealevel for replacement.

•C4-104.485+1 (Item# 3547) –PC/104 RS-422, RS-485 (Software Selectable) Isolated Serial

Interface

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 with the

3547. All items can be purchased from our website (www.sealevel.com) or by calling our sales team at

864-843-4343.

Cables

10-Pin IDC Ribbon Cable to DB9M (Item# CA152)

The CA152 allows connects to the 10-pin header on

PC/104 boards and provides a DB9M connector that can

be panel mounted in an enclosure. This cable is eight

inches in length.

DB9F to DB9M Extension Cable (Item# CA127)

The CA127 allows users to extend a DB9 cable up to six

feet. The connectors are pinned one-to-one, so the cable

is compatible with any device or cable with DB9

connectors.

DB9F (RS-422) to DB25M (RS-530) Cable (Item# CA176)

The CA176 allows users to convert any Sealevel RS-422

DB9 Male asynchronous adapter to an RS-530 DB25

Male pinout. This cable is ten inches in length.

DB9F to DB9F –207M SMPTE Cable (Item# CA190)

The CA190 connects any Sealevel DB9 RS-422 device to

a Sony (or compatible) 207M (SMPTE) 9-pin connector.

This cable is 72” in length.

Terminal Blocks

Terminal Block Kit (Item# KT105)

The KT105 terminal block kit breaks out a DB9 connector to

9 screw terminals to simplify field wiring of serial

connections including RS-422 and RS-485 networks. The kit

includes one DB9 terminal block (Item# TB05) and one

DB9M to DB9F 72” extension cable (Item# CA127).

Terminal Block –DB9F to 9 Screw Terminals (Item# TB05)

The TB05 terminal block breaks out a DB9 connector to

9 screw terminals to simplify field wiring of serial

connections including RS-422 and RS-485 networks. The

TB05 is designed to connect directly to Sealevel DB9

serial cards or any cable with a DB9M connector.

Adapters and Converters

DB9F to RJ45 Modular Adapter (Item# RJ9S8)

The RJ9S8 is a DB9 female to RJ45 adapter. It can be

configured without tools, and it is an excellent choice for

using available infrastructure wiring.

DB9F (RS-422) to DB9F Converter (Item# DB103)

The DB103 is designed to convert a Sealevel DB9 male

RS-422 connector to a DB9 female pinout compatible

with AC24AT and AC422AT Opto 22 ISA bus cards.

PC/104 Adapter Kits

PC/104 to CompactFlash Adapter (Item# CF104)

The CF104 allows users to easily add a CompactFlash

memory card with an IDE interface to a PC/104 stack.

The CF104 includes an adapter board built into the

PC/104 form factor. The arrangement of mounting holes

at the corners allows the board to be rotated and

mounted 180 degrees on the long axis.

PC/104 to 2.5” Hard Drive Adapter (Item# HD104)

The HD104 allows users to easily add an optional 2.5”

hard drive with an IDE interface to a PC/104 stack. The

HD104 includes an adapter board built into the PC/104

form factor and offers two different mounting options.

Card Setup

The 3547 contains a single 4 position DIP-Switch (labeled SW1) that provides the address selection for the

adapter and a jumper strip (labeled E5) providing the IRQ selection for the adapter.

Address Selection

Each port on the 3547 occupies sixteen consecutive I/O locations. The DIP switch is used to set the base

address for the serial ports and the following table shows the addressing options available. If different

address options are required, please contact Sealevel Systems Technical Support about a custom PAL

option.

SW1-1

SW1-2

SW1-3

Port 1

Port 2

Port 3

Port 4

OFF

300

310

320

330

OFF

400

410

420

430

OFF

500

510

520

530

OFF

600

610

620

630

OFF

1500

1510

1520

1530

OFF

3220

3230

3240

3250

4220

4230

4240

4250

The fourth switch, ‘S’ on the DIP switch is used to allow a shared interrupt between multiple PC/104

adapters. Reference the Interrupt Modes section on the following page for additional information.

An image and a drawing of the DIP switch (SW1) are shown below.

Port Enable/Disable

All four ports on the 3547 can be disabled by setting the switches 1, 2, and 3 on SW1 to the ‘Off’ position.

The ports are enabled when a valid I/O selection is made. If the adapter is disabled, be sure to disable the

interrupt request by removing the IRQ jumper from E5.

IRQ Selection

The 3547 has an interrupt selection jumper (labeled E5) for all four of the ports. Be sure to set the interrupt

required by your application prior to installation. Consult the manual included with your software application

to determine the proper setting.

The jumpers located at E5 are used to select the appropriate interrupt for the adapter. The jumper for the

1K pull-down resistor (labeled ‘PD’) on E5 connects the resistor to the interrupt line to keep the line from

floating. This jumper must be connected when either a single board or multiple boards on different

interrupts are in use. In situations where multiple cards are sharing interrupts, only one board in the group

should have the PD resistor connected.

An image and a drawing of E5 are included below.

Interrupt Modes

Shared interrupt mode is used to allow more than one PC/104 board to share a single IRQ. The switch

position ‘S’ on DIP switch SW1, when moved to the ‘on’ position, selects the shared interrupt mode for the

adapter. When configuring two or more PC/104 adapters, the following criteria must be met:

•The ‘S’ switch on DIP switch SW1 should be set to ‘on’ for each adapter that will share an interrupt.

•The IRQ jumpers (E5) on each adapter need to be set to the same IRQ.

•Each board must be set to a different address. For example, if two boards are used, the addresses

might be set as follows:

DIP switch:

Board 1:

Off

Board 2:

Off

Refer to the Address Selection section for additional information.

•Only one card in the group should have the pull-down (PD) on E5 activated.

The image below shows what the DIP switch and jumper settings would look like for two PC/104 boards

installed in the same computer.

In situations where PC/104 boards do not need to share interrupts, make sure that the switch position ‘S’

on DIP switch SW1 is moved to the ‘off’ position. In addition, the IRQ jumpers on E5 should be set to different

interrupts for each board.

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