Eaton EASY222-DN, User Manual

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Glossary
This glossary refers to topics related to DeviceNet.
Terminal resistor Terminating resistor at the start and end of a bus cable.
Prevents interference due to signal reflection and is used for
the adaptation of bus cables. Bus terminating resistors must
always be the last unit at the end of a bus segment.
Acknowledge Acknowledgement returned by the receiving station after
having received a signal.
Address Number that identifies a memory area, systems or module
within a network, for example.
Addressing Assignment or setting of an address for a module in the
network, for example.
Active metallic component Conductor or conductive component that is live when in
operation.
Analogue Value, such as voltage, that is infinitely variable and propor-
tional. Analogue signals can acquire any value within
specific limits.
Automation product I/O controlling device that is interconnected to a system
process. PLCs represent a special group of automation prod-
ucts.
Baud Unit for the data transfer rate. One baud is equivalent to the
transmission of one bit per second (bps).
Baud rate Unit of measure of the data transmission speed in bit/s.
Electrical equipment Comprises all equipment used for the generation, conver-
sion, transfer, distribution and application of electrical
energy, e.g. power lines, cables, machines, controlgear.
Reference ground Earth potential in the area of grounding devices. May have
a potential other than the zero of "earth" potential.
Reference potential Represents a reference point for measuring and/or visual-
ising the voltage of any connected electrical circuits.
Bidirectional Operation in both directions.