Product Description XI/ON - Eaton Automation
Product Description XI/ON - Eaton Automation
Product Description XI/ON - Eaton Automation
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<strong>XI</strong>/<strong>ON</strong>: Gateways for Modbus TCP 10 Glossary<br />
R<br />
PLC<br />
Programmable Logic Controller.<br />
Potential compensation<br />
The alignment of electrical levels of electrical components and<br />
external conductive components by means of an electrical connection.<br />
Potential free<br />
Galvanic isolation of the reference potentials in I/O-modules of the<br />
control and load circuits.<br />
Potential linked<br />
Electrical connection of the reference potentials in I/O-modules of<br />
the control and load circuits.<br />
Protective earth<br />
Electrical conductor for protection against dangerous shock<br />
currents. Generally represented by PE (protective earth).<br />
Radiation coupling<br />
A radiation coupling appears when an electromagnetic wave hits a<br />
conductive structure. Voltages and currents are induced by the collision.<br />
Typical sources of interference are for example, sparking gaps<br />
(spark plugs, commutators from electric motors) and transmitters (e.<br />
g. radio), that are operated near to conducting structures.<br />
Reaction time<br />
The time required in a bus system between a reading operation<br />
being sent and the receipt of an answer. It is the time required by an<br />
input module to change a signal at its input until the signal is sent to<br />
the bus system.<br />
Reference potential<br />
Potential from which all voltages of connected circuits are viewed<br />
and/or measured.<br />
Repeater<br />
Amplifier for signals transmitted via a bus.<br />
M001973-01, 07/2007 219
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