Siemens SINUMERIK 840DE User Manual page 96

A Abbreviations
MSD
Main Spindle Drive
NC
Numerical Control
NCK
Numerical Control Kernel: NC kernel with block preparation, traversing range,
etc.
NCU
Numerical Control Unit – Hardware Unit of the NCK
NE
Mains Supply
NMI
Non Maskable Interrupt
OI
Unstabilized power supply
OP
Operator Panel: Operator panel front
OPI
Operator Panel Interface
PCMCIA
Personal Computer Memory Card International Association
PCU Personal Computer Unit: NC controller component which allows the operator to
communicate with the machine and vice versa.
PG
Programming device
PLC
Programmable Logic Control
PROFIBUS
Process Field Bus: Serial data bus
PS
Power Supply: SIMATIC S7-300 power supply
RAM
Random Access Memory: Program memory that can be read and written to
SRAM
Static RAM: Static memory (battery-backed)
UI
End User Interface
VGA
Video Graphics Adapter
A-94
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
03.06
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