Rockwell Automation 1760-DNET Pico DeviceNet Communications Module User Manual - Manual (Page 161)

Publication 1760-UM003A-EN-P - September 2005
Glossary 9
Shielding
Refers to all measures and equipment used to connect system parts to
the screen.
Protective conductor
Conductor required for human body protection against hazardous
currents. Abbreviation: PE (“Protective Earth“).
Serial
Describes an information transfer technique. Data are transferred in a
bit-stream across the cables.
Slave
Station or node in a bus system that is subordinate to the master.
Station
Function unit or module, consisting of several elements.
Noise emission (EMC)
Testing procedure to EN 61000-6-4
Noise immunity (EMC)
Testing procedure to EN 61000-6-2
Radiation coupling
Radiated coupling occurs when an electromagnetic wave makes
contact with a conductor structure. The impact of the wave induces
currents and voltages. Typical interference sources are, for example
ignition circuits (spark plugs, commutators of electrical motors) and
transmitters (e.g. radio-operated devices), which are operated near the
corresponding conductor structure.
Topology
Geometrical network structure, or circuit arrangement.
UART
Abbreviation for “Universal Asynchronous Receiver/Transmitter“. A
"UART" represents a logical circuit used to convert an asynchronous
serial data stream into a parallel bit stream and vice versa.