1. Introduction GEM80-400
Page 1-8 ALSPA GEM80-400 CONTROLLER TECHNICAL MANUAL Issue 3 04/99
Full details are given in the relevant GEM
80 Product Data Sheets and User Information
Sheets. The incorporation of a Fast I/O Driver within one of the slots in a 400S or
Enhanced Controller is described in Chapter 5 of this manual.
1.4.9. Video Processor Outputs
Plant video monitors can be connected to GEM
80-400 Enhanced Controllers if an
IMAGEM Module is fitted in to one of the five Central Highway slots of the controller
subrack. This enables alarms, plant mimics and interactive operator controls to be
displayed in colour. A video program port is provided on the front of the IMAGEM
Module thus enabling a suitable GEM
80 programming tool, such as Gemesys 3, to
program the Video. Further details are available in the relevant IMAGEM Technical
Publications, and Chapter 5 of this manual.
1.4.10. Additional Facilities
On-line program changes.
Remote programming from serial links.
Built-in text editor for generation of printer port messages.
Flexible data table sizes.
Battery-backed, integral, real time clock for time and date.
Comprehensive monitoring supported by diagnostic messages.
Transfer of user program and preset data to FLASH EPROM.
Floating-point mathematics including trigonometric, logarithmic and exponential
functions.
Large range of built-in, pre-written software routines, now extended to provide additional
facilities.
Plug-in RAM boards for memory extension.
System Log.
Multiple combinations of Central Highway Modules and RAM modules in Enhanced
system.
Firmware update using FLASH EPROM.
1.5. GEM
80-400 Controller System
1.5.1. Subrack Assembly
1.5.1.1. Mechanical Structure
The Subrack is manufactured from flame retardant, polycarbonate resin material with
flame resistance to UL94-V0; it is delivered fully assembled. Integral guides provide slots
for module insertion and a slot selection strip ensures that only the slots relevant to the
application are used. Reference should be made to individual instruction sheets supplied
with the equipment. Unused slots have single or double blanking panels fitted, as
appropriate. See Chapter 10 of this manual for ordering codes.
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