Appendix; Abbreviations - Siemens SINUMERIK 840D sl Commissioning Manual

Appendix

A.1

Abbreviations

CF Compact Flash: Memory card
DCK Direct Control Keys Direct control key
DHCP Dynamic Host Configuration Protocol: Dynamic assignment of an IP address and other configuration
parameters on a computer in a network
DNS Domain Name System: Conversion of domain names into IP addresses
EBS Emergency Boot System
EKS Electronic Key System: System to check the identity of a user (authentication system)
HMI Human Machine Interface: Operator interface
IRT Isochronous Realtime (Ethernet)
MAC Media Access Control: The MAC address is a 48-bit Ethernet ID.
MCP Machine Control Panel Machine control panel
MPI Multi-Point Interface Multiple interface
MUI Multilanguage User Interface
NCK Numerical Control Kernel: NC kernel with block preparation, travel range, etc.
NCU Numerical Control Unit: NCK hardware unit
NRT Non-Realtime (Ethernet)
NTFS New Technology File System
NTP Network Time Protocol: Standard for synchronizing clocks in the entire network
NTPD NTP Daemon:
Utility that runs in the background and does not have to be started by the user.
PCU PC Unit: Computer unit
PG Programming device
PLC Programmable Logic Control: PLC
PROFIBUS Process Field Bus: Standard for the fieldbus communication in automation systems
RAM Random Access Memory: Program memory which can be read and written into
RDY Ready Ready
TCU Thin Client Unit
TFTP Trivial File Transfer Protocol: Very simple data transmission protocol
UDP User Datagram Protocol: NTP is mostly processed via UDP.
USB Universal Serial Bus
UPS Uninterruptible power supply
UTC Universal Time, Coordinated Coordinated universal time
VNC Virtual Network Computing
NCU Operating System (IM7)
Commissioning Manual, 07/2007, 6FC5397-1DP10-2BA0
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