Siemens SIMATIC IPC647D Operating Instructions Manual page 202

Abbreviations
Abbreviation Term
WAN Wide Area Network
WAV Wave Length Encoding
WD Watchdog
WLAN Wireless LAN
WoL Wake on Local Area Network
WWW World Wide Web
XD Execute Disable Capability
XGA Extended Graphics Array
ZMM Zero Maintenance Cache Protection Module
202
Meaning
Loss-free file format for audio data.
Program monitoring with error detection and alarming.
LWireless local area network
Hardware implementation
Graphic standard, maximum resolution 1024x768 pixels.
Maintenance-free cache unit for saving cache contents
Operating Instructions, 01/2014, A5E32996306-AA
SIMATIC IPC647D