Glossary - Pepperl+Fuchs FD0-VC-Ex4.FF Manual

D

Glossary

Bus segment
→ Segment
Bus termination
→ Termination resistor
Channel
A channel of the valve coupler designates a valve with the two associated PFCs.
EMC
Electromagnetic compatibility is the ability of an electrical device to function properly in a spe-
cified environment without affecting the environment in an undue manner by emitting electro-
magnetical radiation.
FF-H1
Abbreviation for → F
Fieldbus Foundation
Founder organisation of the F
FISCO
Fieldbus lntrinsically Safe Concept.
F Fieldbus
OUNDATION
Fieldbus of the Fieldbus Foundation. "FF" is a bus system, which networks the FF compatible
automation systems and field devices in the cell and field level.
F
OUNDATION
PFC
Final Position feedback contact. This can be a mechanical switch or a NAMUR sensor.
Segment
A segment or bus segment is a closed part of a serial bus system. The bus line between two
termination resistors forms a segment. A segment contains 0 to 32 bus participants. Segments
can be coupled via fieldbus repeaters.
Power Repeater
A power repeater from Pepperl+Fuchs combines two separate FF segments. The two segments
are coupled with each other in terms of data engineering but separated from each other in rela-
tion to the physics of transmission. One of the two segments is powered by the power repeater.
TAG
Clear designation of the control engineering point of the field device within the process plant.
Termination resistor
A termination resistor is a resistor to terminate the data transfer line in order to avoid cable
reflections; termination resistors are required in any case at the cable or segment ends.
Subject to reasonable modifications due to technical advances.
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Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Fieldbus with a data rate of 31.25 kbit/s.
OUNDATION
OUNDATION
is a trademark (TM) of the Fieldbus Foundation.
Fieldbus Valve Coupler FD0-VC-Ex4.FF
Fieldbus.
Glossary
Copyright Pepperl+Fuchs, Printed in Germany