Siemens Sinumerik 802D sl Instruction Manual page 253

Abbreviations
CF Compact Flash
CNC Computerized numerical control
COM Communication module
CU Control Unit
DC Direct current
DI Digital input
DIN Deutsche Industrienorm (German industrial standard)
DI/DO Digital input/output, bidirectional
DO Digital output
DP Distributed I/O
ESD Electrostatically sensitive devices
EMC Electromagnetic compatibility
EN Europäische Norm (European Standard)
HMI Human Machine Interface
IEC International Electrotechnical Commission
ISO International Standardization Organization
LED Light Emitting Diode
GND Ground
MCP Machine control panel
NC Numerical control
NCK Numerical Control Kernel
PC/PG Personal computer, programming device
PCU Panel Control Unit
PELV Protective extra-low voltage
PLC Programmable Logic Control
PNO PROFIBUS Nutzer-Organisation (PROFIBUS user organization)
RJ45 Interface standard; describes an 8-pin plug connection for twisted-pair Ethernet
RS232 Serial interface
RS485 Interface standard; describes the physical properties of a digital serial interface
SDB System data block
Siemens Automation Parts
SINUMERIK 802D sl Instruction Manual (BA), 05/2005 Edition
6FC5 397-0CP10-1BA0
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