A
Appendix 03.04
A Abbreviations
OB
Organization block in the PLC
OEM
Original Equipment Manufacturer
OP
Operator panel
OPI
Operation Panel Interface: Interface for connection to the operator
panel
OPT
Options
OSI
Open Systems Interconnection: Standard for computer
communications
P bus
Peripheral bus
PC
Personal Computer
PCIN
Name of the SW for data exchange with the control
PCMCIA
Personal Computer Memory Card International Association: Standard
for plug-in memory cards
PLC
Programmable Logic Control: Interface controller
PLC
Programmable Logic Controller
POS
Positioning
Programming device
Programming device
RAM
Random Access Memory: program memory that can be read and
written to
REF
Reference point approach function
REPOS
Reposition function
RISC
Reduced Instruction Set Computer: type of processor with small
instruction set and ability to process instructions at high speed
ROV
Rapid override: Input correction
RPA
R-Parameter Active: Memory area in
NCK for R-NCK for R parameter numbers
Siemens AG, 2004. All rights reserved.
A-140 SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition
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