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Abbreviations – Rockwell Automation T8094 8000 Series TMR System Safety Manual User Manual

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SAFETY MANUAL

D oc N umber T8094
I ssue 27 – June 2013

Page i x

ABBREVIATIONS

1-oo-2

One-out-of-two

1-oo-2D

One-out-of-two with diagnostics

2-oo-2

Two-out-of-two

2-oo-3

Two-out-of-three

API

Application Program Interface

DIN

Deutsche Industrie-Norm (German Industrial Standard)

DIU

Diagnostic Interface Utility

EMC

Electromagnetic Compatibility

EMI

Electromagnetic Interference

EUC

Equipment Under Control

FB

Function Block

FCR

Fault Containment Region

HIFT

Hardware Implemented Fault Tolerance

IL

Instruction List

I/O

Input/Output

IMB

Inter-module Bus

LD

Ladder Diagram

MMU

Memory Management Unit

MTR

Mean Time to Repair

PC

Personal Computer

PST

Process Safety Times

PSU

Power Supply Unit

SFC

Sequential Function Chart

SFOC

Second Fault Occurrence Time

SIL

Safety Integrity Levels

ST

Structured Text

TMR

Triple Modular Redundant

TÜV

Technischer Überwachungs-Verein

UPS

Uninterruptable Power Supply