Advantech ADAM-4500 Manuale utente

ADAM-4500

PC-based Communication

Controller

User's ManualCopyright

Notice

This document is copyrighted, 1997, 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 may be reproduced, copied, translated or transmitted in any form or by any means

without the prior written permission of Advantech Co., Ltd. Information provided in this manual is

intended to be accurate and reliable. However, Advantech Co., Ltd. assumes no responsibility for its use,

nor for any infringements upon the rights of third parties which may result from its use.

Acknowledgments

ADAM is a trademark of Advantech Co., Ltd.

IBM and PC are trademarks of International Business Machines Corporation.

Part No. 2050500110 1st Edition

Printed in Taiwan July 1997

Table of Contents

Chapter 1 General Information 1

1.1 Introduction 1

1.2 Features 1

1.3 Specifications 2

1.4 System Diagram 3

Chapter 2 Installation Guidelines 5

2.1 System Requirements to Setup ADAM-4500 5

2.2 Steps to Successfully Setup the System 5

Step 1: Review the requirements 5

Step 2: Wiring the power cables and download cable 5

Step 3: Run utility software in host computer 6

Step 4: Power on ADAM-4500 8

2.3 Jumper Setting 8

COM1 Port Setting 9

Watchdog Timer Setting 9

Reset Function Setting 9

2.4 Communication Wiring 9

RS-232 Connection 9

RS-485 Connection 10

Chapter 3 Programming and Downloading 11

3.1 Programming 11

Mini BIOS functions 11

Converting Program Codes 11

Other limitations 12

Programming the Watchdog timer 12

Interrupt types 13

Memory Mapping 13

3.2 Downloading and transferring 14

Install Utility Software on Host PC 14

Preparing the ALLFILE directory 14

Downloading into flash ROM 14

Transferring files to SRAM 16

3.3 Steps to Building a Successful Application 16

Step 1:Write and simulate control logic on a PC 16

Step 2:Connect the cables 16

Step 3:Convert and download codes to flash ROM 17

Step 4:Power on ADAM-4500 to complete the application 17

Chapter 4 Function Library 18

Appendix A Register Structure 30

Appendix B Safety Instructions 32

Chapter 1 General Information

1.1 Introduction

The ADAM-4500 is a fully functional standalone controller, designed for industrial automation and control,

enclosed in a small package. It provides an ideal means of producing an IBM PC compatible hardware

platform.

Emulating Open PC environments

The module is much like a compact computer, and includes an 80188 CPU, 256 KB Flash ROM, 256 KB

SRAM, COM1, COM2, and a program download port. Its built-in ROM-DOS is an MS-DOS equivalent

operating system, which provides all of the basic functions of MS-DOS except for BIOS. A user can run

standard PC software and application programs, written in high level languages such as C or C++, within

the ROM-DOS environment. Moreover, the module also provides free ROM memory for application

downloading and free RAM memory for application operation.

Built-in RS-232/RS-485 Communication Ports

The ADAM-4500 has two communication ports to let the controller easily communicate with the other

devices in your application. The COM1 port can be configured as an RS-232 or an RS-485

communication interface via the jumper setting. The COM2 port is dedicated as an RS-485 port. This

unique design makes the controller suitable for use in a variety of applications.

Built-in Real-time Clock and Watchdog Timer

The controller also includes a real-time clock and a watchdog timer function. The real-time clock ensures

time recording while events occur. The watchdog timer is designed to automatically reset the

microprocessor when the system fails. This feature greatly reduces the level of maintenance required and

makes the ADAM-4500 ideal for use in applications that require a high level of system stability.

1.2 Features

•Built-in boot ROM-DOS to run PC programs

•Free ROM/RAM memory for user's applications

•2-wire, multi-drop RS-485 networking

•Communication speed up to 115.2 Kbps

•RS-232/RS-485 modes (jumper selectable)

•Automatic data flow control in RS-485 mode

•Built-in real-time clock and watchdog timer

•Easy mounting on a DIN-rail or panel

•Program download cable and utility included

1.3 Specifications

System

•CPU: 80188-40

•Flash ROM: 256 KB (170 KB free memory for users)

•Operating system: Boot ROM-DOS

•SRAM: 256 KB ( 234 KB free memory for users)

•Timer BIOS: Yes

•Real-time clock: Yes

•Watchdog timer: Yes

•COM1: RS-232/RS-485

•COM2: RS-485

•Program download port (RS-232): Tx, Rx, GND

RS-232 Interface

•Signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND

•Mode: Asynchronous full duplex, point to point

•Connector: DB-9 pin

•Transmission speed: up to 115.2 Kbps

•Max transmission distance: 50 feet (15.2 m)

RS-485 Interface

•Signals: DATA+, DATA-

•Mode: Half-duplex, multi-drop

•Connector: Plug-in terminal block

•Transmission speed: up to 115.2 Kbps

•Max transmission distance: 1220 m (4000 feet)

Power

•Unregulated +10 to +30 VDC

•Protected against power reversal

•Power consumption: 2.0 W

Mechanical

•Case: ABS with captive mounting hardware

•Plug-in screw terminal block:

Accepts 0.5 mm2to 2.5 mm2, 1 - #12 or 2 - #14 to #22 AWG

Environment

•Operating temperature: -10 to 70°C (14 to 158°F)

•Storage temperature: -25 to 70°C (-13 to 158°F)

•Humidity: 5 to 95 %, non-condensing

1.4 System Diagram

ADAM-4500

Figure 1-1: ADAM-4500 Diagram

Function Block Diagram

SRAM

FLASH ROM

RTC

WDT&Reset

16 Bit

Power

Converter

COM#1

UART

COM#2

UART

RS-485

Tranceiver

RS232/485

Tranceiver

Programming

Port

Tranceiver

GND

+5V

GND

+10V to 30Vdc

Figure 1-2: ADAM-4500 Function Block Diagram

Chapter 2 Installation Guidelines

This chapter provides guidelines to set up and install the ADAM-4500 communication controller. A

simplified hookup scheme is provided that lets you configure a successful system off-line before

implementing it in your application.

2.1 System Requirements to Setup ADAM-4500

The following list gives an overview of what is needed to setup, install and configure an ADAM-4500

system.

•ADAM-4500 module

•An IBM PC/AT compatible computer that can download programs with an RS-232 port.

•Power supply for the ADAM-4500 (+10 to + 30 VDC)

•ADAM-4500 download utility software

•Download cable (RS-232 interface)

Host computer

Any computer that is IBM PC/AT compatible which can run and write programs in an MS-DOS

environment, and provides an RS-232 communication port to allow users to download programs into the

ADAM-4500, can function as the host computer.

Power supply

For ease of use in industrial environments, the ADAM-4500 will accept industry standard +24 VDC

unregulated power. The ADAM-4500 was designed to operate using any power supply voltage between

+10 and +30 VDC. Power ripples must be limited to 5 V peak to peak while the voltage in all cases must

be maintained between +10 and +30 VDC.

Utility software

A disk containing menu-driven utility software is provided with ADAM-4500 to help users to download

programs to the ADAM-4500. The ADAM-4500 utility software is executed in an MS-DOS or compatible

environment.

Download cable

A customized download cable is included. A user can connect it between the COM port of a host

computer and the download port of the ADAM-4500 for downloading programs.

2.2 Steps to Successfully Setup the System

Step 1: Review the requirements

Before you power on the ADAM-4500, make sure you have a host computer, a power supply, and the

utility software and download cable.

Step 2: Wiring the power cables and download cable

Connect the power cable between the power supply and the ADAM-4500. Make sure the power source is

between +10 and +30 VDC.

Figure 2-1: Power Supply Connections

We advise use of the following standard colors (as indicated on the ADAM-4500) for the power cables:

+Vs (R) Red

GND (B) Black

Connect the download cable between the host computer and the ADAM-4500. A customized download

cable is provided with the ADAM-4500, which includes a DB-9 pin connector for the connection to the

host computer, and three color-coded wires for connection to the ADAM-4500 terminal block. The

following figure shows how to connect the ADAM-4500 to the host computer.

RS-232

Red

White

Black

Female

DB-9

Host PC

(RS-232 PC)

RS-232

Male DB-9

HOST PC DOWNLOAD CABLE and ADAM-4500

Figure 2-2: Download Cable Connections

Step 3: Run utility software in host computer

Together with the ADAM-4500 you will find a utility disk containing an ADAM4500.EXE file. This file is a

menu-driven software utility provided for downloading user's programs. It uses a screen simulating

operation of the ADAM-4500 communication controller. When the file is executed, the main screen

appears, as shown in figure 2.3.

Figure 2-3: Main Screen

Setup COM port

First, highlight the "COMport" option on the top bar and press <enter>. The status field (shown below)

will appear. Second, highlight the COM port you used to connect the ADAM-4500 to the PC, then press

<enter>. The Baudrate is set to a default value of 57600 bps and cannot be changed. The screen is as

shown in figure 2.4.

Figure 2-4: Select Communication Port

Step 4: Power on ADAM-4500

Highlight the "Terminal" option, then press <enter>. Power on the ADAM-4500. After 5 seconds, the

screen shown in figure 2.5 will appear. The ADAM-4500 system is successfully started up.

Figure 2-5: Emulating Screen of ADAM-4500

2.3 Jumper Setting

We designed the ADAM-4500 with ease-of-use in mind. It has three jumper settings. The following

sections explain how to configure the module. You may want to refer to the figure below for help in

identifying card components.

The following diagram shows the locations of the jumpers:

Figure 2-6:Jumper Layout

COM1 Port Setting (JP1)

Jumper JP1 lets you configure the COM1(3F8) port as an RS-232 or as an RS-485 interface for different

applications. Jumper settings are shown below:

Watchdog Timer Setting (JP2)

Jumper JP2 lets you configure the watchdog timer in disable mode, reset mode or NMI (Non-maskable

interrupt) mode.

NMI RESET

JP2

Reset Mode Non-maskable

Interrupt (NMI)

NMI RESET

JP2

Disable Watchdog Timer

NMI RESET

(Default)

Reset Function Setting (JP3)

Jumper JP3 enables or disables the function of the reset pin, as shown below:

2.4 Communication Wiring

The ADAM-4500 offers two serial ports: COM1(3F8) in RS-232 or RS-485, and COM2 (2F8) in RS-485.

COM1 can be configured as an RS-232 or as an RS-485 interface via the jumper setting. This provides

flexibility for communications between the controller and other devices in your application.

RS-232 Connection

The ADAM-4500 has a DB-9 pin connector as its RS-232 port connector. Since the connection for an RS-

232 interface is not standardized, different devices implement the RS-232 connection in different ways. If

you are having problems with a serial device, be sure to check the pin assignments for the connector.

The following table shows the pin assignments for the ADAM-4500's RS-232 port.

Pin No. Description

1 DCD

2 RxD

3 TxD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 RI

Table 2-1: Pin Assignments of RS-232 Port

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