Siemens SINUMERIK 840D Operator's Manual page 320

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Appendix
A Abbreviations
PCMCIA
PE
PG
PLC
PMS
POS
RAM
REF
REPOS
RISC
ROV
RPA
RPY
RS-232
RTS
SBL
SCK
SD
SDB
SEA
SFB
A-320
Personal Computer Memory Card International Association: Memory
card standardization
Pulse enable for drive module
Programming Device
Programmable Logic Controller
Position Measuring System
Positioning
Random Access Memory (read-write memory)
Reference point approach function
Reposition function
Reduced Instruction Set Computer: Processor type with small
instruction set and high-speed instruction throughput
Rapid Override
R Parameter Active Memory area in NCK for R variable numbers
Roll Pitch Yaw: Type of rotation of a coordinate system
Serial Interface (US standard), defines transmission of serial data
between DTE and DCE devices
Request To Send (serial data interfaces)
Single Block
Software Configuration Kit
Setting Data
System Data Block
Setting Data Active: (file identifier for setting data)
System Function Block
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
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03.04
 Siemens AG, 2004. All rights reserved