turck FGEN-AIM Series, User Manual

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D301271 1013 - FGEN - multi protocol
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PROFIBUS-DP
PROFIBUS bus system with DP protocol. DP stands for decentralized periphery. PROFIBUS-DP is based on DIN
19245 Parts 1 + 3 and has been integrated into the European fieldbus standard EN 50170.
It ensures a fast cyclic data exchange between the central DP master and the decentralized periphery devices
(slaves). Its universal use is realized by the multi master concept.
PROFIBUS-DP address
Each PROFIBUS-DP module is assigned an explicit PROFIBUS-DP address, with which it can be queried by the
master.
PROFIBUS-DP master
The PROFIBUS-DP master is the central station on the bus and controls access of all stations to PROFIBUS.
PROFIBUS-DP slave
PROFIBUS-DP slaves are queried by the PROFIBUS-DP master and exchange data with the master on request.
Protective earth
Electrical conductor for protection against dangerous shock currents. Generally represented by PE (protective
earth).
Radiation coupling
A radiation coupling appears when an electromagnetic wave hits a conductive structure. Voltages and currents
are induced by the collision. Typical sources of interference are for example, sparking gaps (spark plugs,
commutators from electric motors) and transmitters (e. g. radio), that are operated near to conducting structures.
Reaction time
The time required in a bus system between a reading operation being sent and the receipt of an answer. It is the
time required by an input module to change a signal at its input until the signal is sent to the bus system.
Reference potential
Potential from which all voltages of connected circuits are viewed and/or measured.
Repeater
The phase and the amplitude of the electric data signals are regenerated during the transmission process by the
repeater.
Further, it is possible to change the topology of the PROFIBUS network. It can be extended considerably by means
of the repeater.
Root-connecting
Creating a new potential group using a power distribution module. This allows sensors and loads to be supplied
individually.
RS 485
Serial interface in accordance with EIA standards, for fast data transmission via multiple transmitters.
Serial
Type of information transmission, by which data is transmitted bit by bit via a cable.
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