SeaLevel COMM+232.PCIe Manuale utente

COMM+232.PCIe

User Manual | 7202e and 7202eS

Contents

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

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

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

HARDWARE DESCRIPTION ................................................................................................................................. 6

TECHNICAL DESCRIPTION ................................................................................................................................. 7

SOFTWARE INSTALLATION ..............................................................................................................................11

HARDWARE INSTALLATION .............................................................................................................................13

HARDWARE REMOVAL......................................................................................................................................20

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

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

APPENDIX B – HANDLING INSTRUCTIONS.....................................................................................................27

APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................28

APPENDIX D – ASYNCHRONOUS COMMUNICATIONS ..................................................................................29

APPENDIX E – MECHANICAL DRAWING .........................................................................................................30

WARRANTY ........................................................................................................................................................31

................................................................................................................................................................................

Introduction

The Sealevel COMM+232.PCIe (Item# 7202e) provides a PCI Express 1.0a compliant interface adapter with

two asynchronous RS-232 serial ports for industrial automation and control applications and support data

rates to 921.6K bps.

All modem control signals are implemented for maximum compatibility with a wide range of serial

peripherals. The Sealevel SeaCOM software driver and utilities make installation and operation easy on the

XP, Vista, Windows 7, and Windows 8 operating systems.

The 7202e ships with a low profile PC bracket for use in systems with a low profile PCI Express slot. If you

need a standard size PC bracket, order the 7202eS.

Features

•PCI Express two-port serial interface adapter

•High performance 16C950 UART with 128-byte FIFOs

•Each port supports data rates to 921.6K bps

•Oscillator and clock prescalar support wide range of baud rates

•Supports 9-bit protocol framing

•PCI Express 1.0a compliant via X1 connector

•Compatible with all low profile and standard size PCI Express slots

•All modem control signals implemented in RS-232 mode

•Includes 36” cable that terminates to two DB9M connectors

Before You Get Started

What’s Included

Depending on the PC bracket ordered, the 7202e is shipped with the following items. If any of these items

are missing or damaged, please contact Sealevel for replacement.

•COMM+232.PCIe– Two-Port RS-232 Serial Interface

7202e – PCI Express Board with Low Profile PC Bracket

7202eS – PCI Express Board with Standard Height PC Bracket

•CA203 – DB25F to (2) DB9M Cable, 36” in Length

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

7202e. All items can be purchased from our website (www.sealevel.com) by calling our Sales team at +1

864-843-4343.

DB9F to DB25M (RS-232) Extension Cable (Item# CA177)

The CA177 is a standard AT-style RS-232 modem

cable with a DB9F connector on one end and a

DB25M connector on the other. This cable is 72

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 that has

DB9 connectors.

DB9F to RJ45 Modular Adapter (Item# RJ9S8)

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

configured without tools and is an excellent choice for

using available infrastructure wiring.

Hardware Description

PCI Express Board

The 7202e is a low profile PCI Express 1.0a compliant board via single lane x1 slot. It can be used in any

single- or multi-lane PCI Express slot. It is available in standard height PCI Express as item# 7202eS.

DB25M Board Connector

The board integrates a DB25 male connector for interfacing the two serial ports via the included cable.

DB25M Serial Connectors

The 7202e ships with a two-port cable (Item# CA203) that includes four DB9 male serial connectors. The

pin out for these connectors is detailed in the following Technical Description section.

Technical Description

Each serial port utilizes a 16C950 UART featuring programmable baud rates, data format, interrupt control

and industry-leading 128-byte transmit and receive FIFOs. This high-performance UART includes 9-bit

framing support and is fully software compatible with legacy 16550 applications. In addition, the 14.7456

oscillator and UART’s flexible clock prescaler supports the widest range of standard and non-standard baud

rates to 921.6K bps. Refer to Appendix C for cable length limitations.

Connector Pin Assignments

Board Connector (DB25 Male)

The 7202e board includes a DB25 male connector for attaching the included cable (Item# CA203). The pin

out for the DB25M connector is shown in the table below.

Port 1 Pin# Port 2 Pin# RS-232

1 11 RD

2 12 CTS

3 13 DCD

4 14 TD

5 15 RTS

6 16 DSR

7 17 DTR

8 18 RI

9 10 GND

Cable Pin Assignments

The 7202e includes a cable (Item# CA203) with a DB25 female connector terminating to a pair of DB9 male

connectors. The DB25F connector on the cable plugs into the DB25M connector on interface board. The

DB9M connectors are compatible with a variety of serial peripherals. The pin assignments for the supported

electrical interfaces are shown in the tables below.

RS-232 (DB9 Male)

These RS-232 pin assignments meet EIA/TIA/ANSI-574 DTE specifications for DB9 type connectors.

Pin # Signal Name Mode

1 DCD Data Carrier Detect Input

2 RD Receive Data Input

3 TD Transmit Data Output

4 DTR Data Terminal Ready Output

5 GND Ground

6 DSR Data Set Ready Input

7 RTS Request To Send Output

8 CTS Clear To Send Input

9 RI Ring Indicator Input

Please terminate any control signals that are not going to be used. The most common way to do

this is to connect RTS to CTS and RI. Also, connect DCD to DTR and DSR. Terminating these pins,

if not used, will help insure you get the best performance from your adapter.

Baud Rates and Oscillator Value

The 7202e utilizes a 14.7456MHz oscillator, which is automatically entered by the SeaCOM driver under

Windows 2000/XP/Vista/7 operating systems. The oscillator value can be found in the COM port properties

of Device Manager under the ‘Advanced Tab’.

The high-speed oscillator and the UART’s flexible clock prescaler support a wide range of standard and

non-standard baud rates. You simply need to select the appropriate baud rate in your communications

software and the driver will calculate the closest matching baud rate.

When you use the board in other operating systems, the baud rate you select is multiplied by eight resulting

in the actual, faster baud rate. This allows the board to achieve data rates to 921.6K bps.

The following table shows common baud rates, and the baud rates you need to select in your application

running on operating systems other than Windows.

For this Data Rate Choose this Data Rate

1200 bps 150 bps

2400 bps 300 bps

4800 bps 600 bps

9600 bps 1200 bps

19.2K bps 2400 bps

38.4K bps 4800 bps

57.6K bps 7200 bps

115.2 K bps 14.4K bps

230.4K bps 28.8K bps

460.8K bps 57.6 K bps

921.6K bps 115.2 K bps

If your communications package allows the use of baud rate divisors, choose the appropriate

divisor from the following table:

For this Data Rate Choose this Divisor

1200 bps 768

2400 bps 384

4800 bps 192

9600 bps 96

19.2K bps 48

38.4K bps 24

57.6K bps 16

115.2K bps 8

230.4K bps 4

460.8K bps 2

921.6K bps 1

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