Advantech ADAM-4500 User manual

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
up
Power
Converter
COM#1
UART
COM#2
UART
RS-485
Tranceiver
RS232/485
Tranceiver
Programming
Port
Tranceiver
GND
+5V
+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
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