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Glossary
LAD
LAdder Diagram -> Graphic representation of controller functions based on a circuit diagram
from protection technology. The current paths, however, are not arranged horizontally in
relation to one another and the symbols deviate.
LAN
Local Area Network, for example, Ethernet network within a building.
LCD
Liquid Crystal Display
LEDs
Light Emitting Diode.
LF
Low Frequency
MAC
Media Access Control
MAC address
The MAC address is the hardware address for each network device (network card, switch ,
etc.) and is used for unique identification of the device in the network. The MAC address is
burned into a chip and cannot normally be modified.
Machine-Readable Product Code
German Maschinenlesbare Fabrikatebezeichnung ->The MLFB is the order number of a
product and at the same time the type/system identifier.
Main ROI or ROI
Region of Interest The main ROI is the area with characteristics of the specimens relevant
for image processing.
Master
The device configured as master in a communications system passes on data to the device
configured as slave. The master is always the active partner.
PC
Personal Computer.
Glossary-6
Vision Sensor SIMATIC VS120
Operating Instructions, Edition 02/2006, A5E00757507-01
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