Thursday, March 19, 2009

Letter L


Ladder Logic

A method of programming a programmable logic controller that
uses symbols that evolved from the diagrams used with control
relays.

Limit Switch

A type of switch that opens or closes its contacts when its
actuator is moved by an object.


Load Center


An industry term used to identify a lighting and appliance
panelboard designed for use in residential and light commercial
applications.

Local Area Network (LAN)

A communication system that interconnects devices within a
limited area, but may also connect to other networks for largerscale
communication.

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