Eaton Electrical PROFIBUS-DP EZ204-DP ユーザーズマニュアル

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MN05013001E

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.