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OP27, OP37 Equipment Manual
Release 05/99
The abbreviations used in this equipment manual have the following meaning:
AM
Alarm Message
ANSI
American National Standards Institute
AS511
Protocol of the PU interface to SIMATIC S5
ASCII
American Standard Code for Information Interchange
AU
Automation Unit
CPI
Control Panel Interface
CPU
Central Processing Unit
DIL
Dual-In-Line (package)
DP
Decentral Periphery
DRAM
Dynamic Random Access Memory
DKM
Direct Key Module
EM
Event Message
ESD
Electrostatic Sensitive Device
JEIDA
Japan Electronic Industry Development Asociation
LCD
Liquid Crystal Display
LED
Light–Emitting Diode
MPI
Multipoint Interface (SIMATIC S7)
PC
Personal Computer
PCMCIA
PLC
Personal Computer Memory Card International Association
Programmable Logic Controller
PU
Programming Unit
PPI
Point to Point Interface (SIMATIC S7)
SRAM
Static Random Access Memory
STN
Super Twisted Nematic
TFT
Thin Film Transistor
TP
Touch Panel
TTL
Transistor-Transistor Logic
Abbreviations
Preface
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