GEM80-400 1. Introduction
Issue 3 04/99 ALSPA GEM80-400 CONTROLLER TECHNICAL MANUAL Page 1-1
1. Introduction
1.1. Manual Overview
This manual describes the operation, installation and maintenance of the GEM
80-400 Series Controllers . It is intended to be used by qualified Technical
Personnel engaged in operating and maintaining plant that is controlled by GEM
80 equipment. The subjects covered by the chapters of this manual are detailed
below:
1.1.1. Chapter 1 - Introduction
This chapter gives a general description of the GEM
80-400 Standard and
Enhanced Controllers. A typical system layout is detailed and all the
components are described. Also included are controller specifications and
environmental, handling and storage requirements together with safety
information.
1.1.2. Chapter 2 - Controller Architecture and Program Operation
This chapter gives brief details of the internal architecture and operation of the
controller. The GEM
80 Instructions and Special Functions Set, and the use of
data tables are also given.
1.1.3. Chapter 3 - I/O Highway
This chapter describes the I/O highway used in the controller, and details the I/O
module addressing techniques and the installation of I/O modules.
1.1.4. Chapter 4 - Communications
Data communication from the GEM
80-400 Processor Module to other controllers
and to intelligent devices, such as printers, is covered in this chapter. The built-in
communication methods (using the ESP protocol) are described; Point-to-Point
and Multi-drop. Full details of configuring the communication ports are given;
communication with GEMSTART CCU (Contactor Control Unit) and Starnet is also
explained.
1.1.5. Chapter 5 - Central Highway Modules
The GEM80-400S and 400 Enhanced Controllers can accommodate many
combinations of Central highway Modules including IMAGEM, STARNET,
GEMLAN-D RAM and a Fast I/O Driver. Details of these modules and their
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