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
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Built-in boot ROM-DOS to run PC programs
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Free ROM/RAM memory for user's applications
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2-wire, multi-drop RS-485 networking
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Communication speed up to 115.2 Kbps
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RS-232/RS-485 modes (jumper selectable)
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Automatic data flow control in RS-485 mode
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Built-in real-time clock and watchdog timer
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Easy mounting on a DIN-rail or panel
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Program download cable and utility included
1.3 Specifications
System
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CPU:
80188-40
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Flash ROM: 256 KB (170 KB free memory for users)
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Operating system: Boot ROM-DOS
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SRAM: 256 KB ( 234 KB free memory for users)
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Timer BIOS: Yes
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Real-time clock: Yes
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Watchdog timer: Yes
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COM1:
RS-232/RS-485
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COM2:
RS-485
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Program download port (RS-232): Tx, Rx, GND
