Pepperl+Fuchs FieldConnex Segment Coupler 3 Manual page 56

PROFIBUS Power Hub Segment Coupler 3 (SK3)
Glossary
Term
power conditioner module
Power Hub module
power dissipation
power supply module
PROFIBUS DP
PROFIBUS MBP
PROFIBUS PA
redundant coupling
redundant supply
retry limit
RS-485
Segment Protector
Segment Checker
spur
static revision counter
transparent coupling
trunk
watchdog time
Zone 0
Zone 1
Zone 2
Explanation
Not galvanically isolated Power Hub module for segment
supply.
Term under which power supply modules and power
conditioner modules as well as diagnostic modules are
subsumed.
Energy produced during device operation which is let off in
form of heat into surroundings.
Galvanically isolated Power Hub module which limits voltage
to a given value and supplies the segment with this voltage.
Brief for "PROFIBUS decentralized periphery". Most often
used PROFIBUS protocol using transmission rates between
9.6 kbit/s and 12 Mbit/s.
Brief for "PROFIBUS Manchester-coded bus powered".
Alternative term for PROFIBUS PA.
Brief for "PROFIBUS process automation". PROFIBUS
protocol using a transmission 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 2 gateway
modules on the gateway motherboard.
Supply which is implemented twice, thereby offering
increased reliability. Per segment, 2 power modules supply
field devices.
Number of retries that are undertaken before a field device is
interpreted as non-existent by the host.
Communication protocol on the PROFIBUS DP segment.
Junction box by Pepperl+Fuchs with implemented short-circuit
protection.
Software for designing, calculating and checking for
plausibility of entire fieldbus installations, using a GUI.
A usually short cable which connects the field device to the
trunk.
Counter which is increased by one every time a substantial
change of state occurs. Can be used for status monitoring.
Coupling in which all PA slaves appear on the DP bus as if
they were DP slaves.
Main line of a segment. Leads from the supply to the junction
box, where the spurs go off.
Time after which a device is taken out of the cyclic data
exchange.
Zone in which a hazardous, potentially explosive atmosphere
comprised of air and inflammable gases, fumes or fog is
present permanently, over longer periods of time or frequently.
Zone in which during normal operation a hazardous,
potentially explosive atmosphere comprised of air and
inflammable gases, fumes or fog is occasionally present.
Zone in which a hazardous, potentially explosive atmosphere
comprised of air and inflammable gases, fumes or fog is
normally not or only present for short periods of time.
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