Abbreviations
08/2005 Appendix
A-997
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
NC Numerical Control
NCK Numerical Control Kernel: NC kernel with block preparation, travel range, etc.
NCU Numerical Control Unit
NURBS Non-Uniform Rational B Spline
O Output
OEM Original Equipment Manufacturer
OP Operator Panel
OPI Operator Panel Interface: Interface for connection to the operator panel
PC Personal Computer
PCMCIA Personal Computer Memory Card International Association: Interface standard
PG Programming device
PLC Programmable Logic Control
PRT Program test
RAM Random Access Memory (can be read and written)
RISC Reduced Instruction Set Computer: Type of processor with small instruction set and
ability to process instructions at high speed
ROV Rapid Override
RPA R Parameter Active: Memory area on the NCK for R parameter numbers
RTS Request To Send: Activate transmitter, control signal from serial data interfaces
SBL Single Block
SD Setting Data
SEA Setting Data Active: Memory area for setting data on the NCK
SKP SKiP: Skip block
SM Signal Module
SPF SubProgram File: Subroutine
SSI Serial Synchronous Interface
SW Software
T Tool
TEA Testing Data Active: Refers to machine data
TNRC Tool Nose Radius Compensation
TO Tool Offset Tool Offset
TOA Tool Offset Active: Memory area for tool offsets
TRANSMIT TRANSform Milling Into Turning: Coordinate conversion on turning machines for milling
operations
UI User interface
ZO Zero Offset
ZOA Zero Offset Active: Memory area
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