Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 201)

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NAMUR Abbreviation for “Normen-Arbeitsgemeinschaft für Mess- und
Regeltechnik” (Standards Work Group for Instruments and
Controls). NAMUR proximity switches represent a special
category of 2-wire proximity switches. They are highly
resistant to interference and reliable due to their special
construction, e.g. low internal resistance, few components
and short design.
Overhead System management time required in the system in each
transmission cycle.
Parameter assignment Assignment of parameters in the configuration software of
the DP master for the individual stations on the bus and their
modules.
PLC Abbreviation for Programmable Logic Controller.
Potential-free Galvanic isolation between the reference potentials of the
control and load circuit of I/O modules.
PROFIBUS-DP PROFIBUS bus system with the DP protocol. DP stands for
“decentralized periphery”.
PROFIBUS-DP is based on DIN 19245 Part 1+4, and was
integrated in the European fieldbus standard EN 50170. It is
used for high-speed data exchange between the central DP
master and the decentralized peripheral devices, the DP
slaves. The comprehensive use is implemented by means of
a multi-master concept.
PROFIBUS-DP address Each PROFIBUS-DP station is assigned an unambiguous
PROFIBUS-DP address by means of which it can be
addressed by the master.
PROFIBUS-DP master The PROFIBUS-DP master is the central station and controls
the PROFIBUS access of all PROFIBUS-DP slaves.
PROFIBUS-DP slave PROFIBUS-DP slaves are addressed by the PROFIBUS-DP
master and exchange data with it at its request.
Protected against short-circuit Property of electrical equipment. Short-circuit-proof
equipment has the ability to withstand the thermal and
dynamic loads that may occur at the location of installation on
account of a short-circuit.