Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 197)

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Glossary
This glossary refers to subjects relating to PROFIBUS-DP.
Acknowledge Acknowledgement returned by the receiving station after
having received a signal.
Active metal component Conductor or conductive component that is live when in
operation.
Address Number, for example, for identifying a memory location, a
system or a module within a network.
Addressing Assignment or setting of an address such as for a module in
a network.
Analog Value, such as voltage, that is infinitely variable and
proportional. Analog signals can acquire any value within
specific limits.
Automation device Control device with inputs and outputs that is connected to a
technical process. Programmable controllers (PLCs) are a
special group of automation devices.
Baud Unit for the data transfer rate. One baud corresponds to the
transmission of one bit per second (bit/s).
Baud rate Unit of measure of the data transmission speed in bit/s.
Bidirectional Operation in both directions.
Bus Bus cable system for data exchange between CPU, memory
and I/O level. A bus can consist of several parallel segments,
such as the data bus, address bus, control bus and power
supply bus.
Bus cycle time Time interval in which a master will serve all slaves or
stations in a bus system, i.e. writes their outputs and reads
their inputs.
Bus line Smallest unit connected to the bus. Consists of the PLC, a
module and a bus interface for the module.
Bus system The entirety of all units which communicate across a bus.