Eaton EASY222-DN, Руководство пользователя

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Glossary
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Parameter Definition Definition of parameters for individual bus stations or their
modules in the configuration software of the DeviceNet
master.
Polled I/O connection A polled I/O connection establishes a conventional master/
slave relationship between a controller and a DeviceNet
device. A polled I/O connection is a point-to-point connec-
tion between two stations on the fieldbus. The master
(client) sends a poll request to the slave (server) and this
replies with a poll response.
• 3 bytes of output data
S1 to S8
easy/MFD output range, RUN/STOP
(inputs at the DeviceNet master)
• 3 bytes of input data
R1 to R16
easy/MFD input range, RUN/STOP (outputs of the Devi-
ceNet master)
Potential equalization Adaptation of the electrical level of the body of electrical
equipment and auxiliary conductive bodies by means of an
electrical connection.
Potential-free Galvanic isolation between the reference potentials of the
control and load circuit of I/O modules.
Common potential Electrical interconnection of the reference potentials of the
control and load circuit of I/O modules.
Response time In a bus system this represents the time interval between
the transmission of a read request and receiving the
answer. Within an input module, it represents the time
interval between the signal change at an input and its
output to the bus system.
Repeater Amplifier for signals transferred across a bus.
Shield Term that describes the conductive covering of cables, cubi-
cles and cabinets.
Screen earth kit Refers to all measures and equipment used to connect
system parts to the screen.