Siemens SIMATIC INDUSTRIAL PC PCIL43 User Manual
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Abbreviations
C.1 Abbreviations
SIMATIC Rack PC IL 43
C-6
Operating Instructions, Edition 09/2005, A5E00432875-01
Abbreviation
Term
Definition
RxD
Receive Data
Data transfer signal
SATA
Serial ATA
An interface for hard disk drives and optical
drives with serial data transfer of up to 1.5 Mbps
SCSI
Small Computer System Interface
Interface for connecting SCSI devices (e.g. hard
disk or CD–ROM drives)
SDRAM
Synchronous DRAM
A design form of dynamic semiconductor chip
(DRAM) that can be operated at a higher clock-
pulse rate as conventional DRAM circuits.
This is enabled by means of block access, where
the DRAM specifies the relevant next memory
address.
SELV
Safety Extra Low Voltage
Safety extra-low voltage
SMART
Self Monitoring Analysis and Reporting
Technology
Hard disk error diagnostics program
SMS
Short Message Service
Short message via telecommunication network
SNMP
Simple Network Management Protocol
Network protocol
SO-DIMM
Small Outline Dual Inline Memory Module
SOM
SafeCard on Motherboard (SOM)
SafeCard On Motherboard consists of monitoring
blocks on the motherboard, a driver and the SOM
program. It provides functions for monitoring
various temperatures and program execution
(Watchdog).
SPP
Standard Parallel Port
Synonym for parallel port
SVGA
Super Video Graphics Array
Enhanced VGA standard with at least 256 colors
SVP
Serial number of the device
SW
Software
TCO
Total Cost of Ownership
TFT
Thin-Film-Transistor
Type of LCD flat-screen
TTY
Tele Type
Asynchronous data transfer
TxD
Transmit Data
Data transfer signal
TWD
Watchdog Time
Watchdog monitoring time
UL
Underwriters Laboratories Inc.
UMA
Unified Memory Architecture
URL
Uniform Resource Locator
Designation of the full address of an Internet
page
USB
Universal Serial Bus
A serial bus with a data transfer rate of max. 12
megabits per second (Mbps) for USB 1.1 or 480
Mbps for USB 2.0 for connecting peripherals to a
computer. USB can connect up to 127
peripherals, such as external CD-ROM drives,
printers, modems, mice, and keyboards, to the
system through a single, general-purpose port.
UXGA
Ultra Extended Graphics Array
Graphic standard, maximum resolution 1600 x
1200 pixels
V.24
ITU-T standardized recommendation for data
transfer via serial ports
VDE
Verein deutscher Elektrotechniker