Advantech PCL-846 Series Manuale utente

PCL-846/847

4-Port RS-422/485

Interface Card

This documentation and the software included with this product are

copyrighted 1998 by Advantech Co., Ltd. All rights are reserved.

Advantech Co., Ltd. reserves the right to make improvements to the

products described in this manual at any time without notice.

No part of this manual or software may be reproduced, copied,

translated or transmitted, in any form or by any means without the

prior written permission of Advantech Co., Ltd. Information provid-

ed in this manual is intended to be accurate and reliable. However,

Advantech Co., Ltd. assumes no responsibility for its use, nor for any

infringements of rights of third parties which may result from its use.

Acknowledgments

PC-LabCard is a trademark of Advantech Co., Ltd. IBM, PC and

PC/XT/AT are trademarks of International Business Machines

Corporation. MS-DOS, MASM, QuickBASIC, Microsoft C and MS-

PASCAL are trademarks of Microsoft Corporation. Intel is a trade-

mark of Intel Corporation. Turbo C and Turbo PASCAL are trade-

marks of Borland International. MOXA is a trademark of Moxa

Technologies Inc.

Part No. 2000000300 1st Edition

Printed in Taiwan December 1998

Contents

Chapter 1: Introduction ................................................... 1

Description.................................................................................................2

Features......................................................................................................2

Specifications ............................................................................................. 3

Card Jumper Layout ................................................................................4

Chapter 2: Hardware Installation .................................... 7

Initial Inspection .......................................................................................8

Card Installation ....................................................................................... 9

Card Configuration ................................................................................10

Default Settings .......................................................................................10

RS-422/485 Selection (JP3, JP5, JP7, JP9) ..........................................10

I/O Address and Interrupt Setup .......................................................... 11

Speed Mode Selection .............................................................................17

Enable Mode Selection (JP4, JP6, JP8, JP10) .....................................18

Chapter 3: Software Installation ................................... 19

Operating Environment Selection.........................................................20

Driver Installation for DOS Users ........................................................20

Driver Installation for Windows 3.1 Users...........................................25

ICOM Utility Setup for Windows 95/98/NT Environments ...............26

Chapter 4: Wiring ........................................................... 29

Pin assignments .......................................................................................30

RS-422 signal wiring...............................................................................30

RS-485 signal wiring...............................................................................31

Appendix A: PC I/O Address Reference ......................... 33

PC I/O Address Usage ............................................................................34

Appendix B: Quick Reference ........................................ 35

Introduction

CHAPTER

2PCL-846/847 User's Manual

Description

PCL-846/847 series cards provide four independent RS-422/485 serial

ports on a card. Each port has a 16C550 UART with an on-chip 16-

byte FIFO buffer for reliable, high-speed serial I/O. The UART

buffers data into 16-byte packets before putting it on the bus. This

drastically reduces the CPU load and avoids data loss when the system

is busy and cannot process the interrupt quickly. The UART is

especially useful for high speed serial I/O under Windows.

PCL-846 cards differ from PCL-847 cards in that they utilize on-

board optical isolators to protect your PC and equipment against

damage from ground loops, increasing system reliability in harsh

environments. To further increase reliability, PCL-846B/847B cards

include surge protection technology, protecting your system from

abrupt high voltage surges (up to 2000 V). The PCL-846/847 series

has passed the CE test for environmental specifications.

An RS-485 Network with Automatic Data Flow Control Using RS-232

Software

The RS-485 mode automatically senses the direction of incoming data

and switches its transmission direction accordingly. This feature

means your network looks and acts just like an RS-232 network.

Application software written for half duplex RS-232 can be used

without modification. Moreover, you can simply and quickly build an

RS-485 network with just two wires.

Features

• Four independent RS-422/RS-485 serial ports

• Transmission speeds up to 921.6 Kbps

• Shared/Independent IRQ settings between each of the 4 serial ports

• Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15

• Supports standard DOS COM1, COM2, COM3, and COM4

• Supports DOS/Windows 3.1 (PC-ComLIB), Windows 95, Windows NT

(ICOM Utility)

• Provides 1000 VDC isolation (PCL-846A/846B only)

Chapter 1 Introduction 3

• Provides 2000 VDC surge protection (PCL-846B/847B)

• Space reserved for termination resistors

• Supports 2 wire or 4 wire operation

• Supports Tx, Rx, RTS, and CTS signals

• Automatic RS-485 data flow control or RTS control

• RS-422 on Auto/RTS/On mode

Specifications

•Ports: 4

•UART: 4 x 16C550 with 16-byte FIFO

•Speed: 50 ~ 921.6 Kbps

•Parity: none, even, odd

•Signal support:

TxD+, TxD-, RxD+, RxD-, CTS+, CTS-, RTS+, RTS- and GND

•I/O address: From 200H to 3F8H

•IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15

•Isolation voltage: 1000 VDC (PCL-846A/846B only)

•Surge protection: 2000 VDC (PCL-846B/847B)

•Power consumption: PCL-847; +5 V @ 460 mA typical, 570 mA max.

PCL-846; +5 V @ 970 mA typical, 1200 mA max.

•Cables: 30-cm male DB-37 to four male DB-9 (DTE)

•Operating temperature: 0 ~ 60°C (32 ~ 140°F) (refer to IEC-68-1.2.3)

•Storage temperature: -25 ~ 80°C (-13 ~ 176°F)

•Dimensions: 185 mm x 100 mm (7.3" x 3.9")

•MTBF: PCL-847A 126630 hrs at 25°C Ground, Fixed environment

PCL-847B 120992 hrs at 25°C Ground, Fixed environment

PCL-846A 105014 hrs at 25°C Ground, Fixed environment

PCL-846B 101107 hrs at 25°C Ground, Fixed environment

• For technical support and service please visit our support website at

http://support.advantech.com

and visit the "Industrial Automation Support" and "FAQ" sections.

4PCL-846/847 User's Manual

Figure 1-1: PCL-847 switch and jumper layout

Card Jumper Layout

Chapter 1 Introduction 5

Figure 1-2: PCL-846 switch and jumper layout

6PCL-846/847 User's Manual

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