Pepperl+Fuchs HD2-GTR-4PA Manual page 67

P R O F I B U S P
O W E R
Term
Physical Layer
Power Conditioner Module
Power Hub Module
Power loss
Power Supply Module
PROFIBUS DP
PROFIBUS MBP
PROFIBUS PA
Redundant Coupling
Redundant Supply
Retry limit
Subject to reasonable modifications due to technical advances.
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H S
U B E G M E N T
Explanation
Layer 1 of the OSI 7 layer model. This
is where physical data exchange takes
place
Not galvanically isolated Power Hub
Module for segment supply
Term under which Power Supply Mo-
dules and Power Conditioner Modules
as well as Diagnostic Modules are
subsumed
Energy produced during device opera-
tion which is let off in form of heat into
surroundings
Galvanically isolated Power Hub Mo-
dule which limits votage to a given va-
lue and supplies the segment with this
voltage
PROFIBUS Decentralized Periphery.
Most often used PROFIBUS protocol
using transmission rates between
9,6 kbit/s and 12 Mbit/s.
PROFIBUS Manchester-Coded Bus
Powered. New Term for
PROFIBUS PA
PROFIBUS Process Automation.
PROFIBUS protocol using a transmis-
sion rate of 31,25 kbit/s. Unlike
PROFIBUS DP, PROFIBUS PA can be
used in intrinsically safe circuits
Coupling which is implemented twice,
thereby offering increased reliability.
Coupling is performed by two Gateway
Modules on the Gateway Motherboard
Supply which is implemented twice,
thereby offering increased reliability.
Per segment, two Power Modules sup-
ply field devices
Number of retries which are underta-
ken before a field device is interpreted
as non-existent by the host
C
O U P L E R
Appendix 1 / Glossary
Copyright Pepperl+Fuchs, Printed in Germany
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