Abbreviations
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
19-5
Abbreviation Term Meaning
V.24 ITU-T standardized recommendation for data
transfer via serial ports
VDE Verein deutscher Elektrotechniker (Union
of German Electrical Engineers)
VGA Video Graphics Array Video adapter which meets industrial standard
VRM Voltage Regulator Module
W2k Windows 2000
WAV Wave Length Encoding Loss-free file format for audio data
WD Watchdog Program monitoring with error detection and
alarming.
WLAN Wireless LAN LWireless local area network
WWW World Wide Web
XGA Extended Graphics Array Graphic standard, maximum resolution
1.024 x 768 pixels
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