List of abbreviations
B.1 Abbreviations
SIMATIC IPC677D
180 Operating Instructions, 09/2014, A5E32995420-AC
NAMUR Normenarbeitsgemeinschaft for Mess- und
Regelungstechnik in der chemischen Industrie
(standardization body for instrumentation and
control technology in the chemicals industry)
NC Not Connected Not connected
NCQ Native Command Queuing Automatic re-sorting of the file and disk access, for
NEMA National Electrical Manufacturers Association Syndicate of manufacturers of electrical components
Interrupt the processor can not reject
NTFS New Techniques File System Secure file system for Windows versions (2000, XP,
Standardized interface for industrial processes
Screen keyboard emulated by operating system
Peripheral Component Interconnect
PCIe Peripheral Component Interconnect express High-speed serial, differential full-duplex PtP inter-
face with high data rate.
PCMCIA Personal Computer Memory Card Interna-
Programmable Interrupt Controller
Programmable interrupt controller
PIC-E Peripheral Component Interconnect Express
PXE Preboot Execution Environment Software for running new PCs without hard disk data
Redundant Array of Independent Disks
Redundant hard disk array
RAL Restricted Access Location
Installation of device in operating facilities with re-
stricted access - for example, a locked switchgear
RS 485 Reconciliation Sublayer 485 Bi-directional bus system designed for up to 32
Reliable Transfer Service
Serial Advanced Technology Attachment
SCSI Small Computer System Interface
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