Contents

 

 

 

 

Chapter 1

Introduction

. 1-1

 

 

Components of a GMR System

1-2

 

 

Series 90-70 PLCs

1-3

 

 

Busses and Bus Controllers

1-4

 

 

Operation Overview

1-5

 

 

GeniusI/OBlocks

1-8

 

 

Configuration and Programming

1-10

 

Chapter 2

InputSubsystem

. 2-1

 

 

Overview

2-2

 

 

GMR Input Groups

2-3

 

 

Non-Voted I/O in the Input Subsystem

2-4

 

 

Discrete Inputs

2-5

 

 

Analog Inputs

2-9

 

Chapter 3

OutputSubsystem

. 3-1

 

 

Overview

3-2

 

 

GMR Output Handling

3-3

 

 

Output Fault Reporting

3-5

 

 

4-Block Output Groups

3-6

 

 

Manual Output Controls and Diagnostics

3-8

 

 

Redundancy Modes for Output Blocks

3-9

 

Chapter 4

PLC Subsystem

. 4-1

 

 

System Startup

4-2

 

 

CPU Sweep in a GMR System

4-5

 

 

Estimating CPU Sweep Time

4-6

 

 

Input Processing

4-7

 

 

Output Processing

4-17

 

 

I/O Shutdown

4-18

 

 

Communications Between PLCs

4-22

 

Chapter 5

Diagnostics

. 5-1

 

 

Programming for Diagnostics

5-1

 

GFK-0787B

GeniustModular Redundancy Flexible Triple Modular Redundant (TMR) System

v

 

User's Manual ± March 1995

 

 

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GE GFK-0787B user manual Contents