P R O F I B U S P
O W E R
H
U B
S
E G M E N T
C
O U P L E R
Appendix 1 / Glossary
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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24.
3
.11
DTM
Device Type Manager. Software which
allows parametization and Diagnosis
of field devices via a GUI. Parameteri-
zation can be done online, i.e. with in-
stant effect of changes, or offline.
Earth leakage
Short circuit via earth. Causes signal
deviations (asymmetry) in case of red-
undant supply.
Galvanic isolation
Physical separation of circuits. Charge
carriers cannot flow from one circuit
into another
GSD converter
Software from Fuchs which
converts GSD files from
PROFIBUS DP to PROFIBUS PA
GSD file
Text file which describes communicati-
on behavior and supported functions
of a PROFIBUS device
Intrinsic Safety
Safety concept. Uses energy limitation
to ensure that no temperatures or
sparks are present which could lead to
ignition of an explosive atmosphere.
Current, Voltage and Power in an in-
trinsically safe circuit are so low that
ignition cannot take place in case of
short circuit, circuit breakage or earth
leakage. Intrinsically safe devices can
be removed from or added to circuits
during operation.
Jitter
Deviation from ideal timing of an
event. Here: Deviation from the ideal
zero passage of the signal as com-
pared to the last zero passage
Mobile Advanced
Diagnostic Module
Modul which offers the functionality of
the Advanced Diagnostic Module but
which is designed for mobile use in the
field since it is USB powered
Noise
Often caused by overlay of a number
of disturbances. Leads to signal dete-
rioration
Term
Explanation
