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Advanced Diagnostics
Appendix
ID
302
303
304
305
306
307
308
309
310
311
192
Phenomenon
Signal level of one or more
devices is too high
Segment / spur voltage is 0
V
Segment / spur voltage is
too low
Devices are missing com-
pared to commissioning
Devices are missing com-
pared to commissioning
Segment voltage is too
high for the given topology
Segment voltage is too
high
Segment voltage is higher
compared to commission-
ing
Segment voltage is "Out of
specification"
Segment voltage is too
high compared to commis-
sioning
Cause(s)
Not enough terminators
2 devices connected to a
spur
Fieldbus power supply
failed
Fieldbus power supply
removed
Bulk power supply failed
Device coupler failed
Cable breakage, short cir-
cuit or terminal connection
failure
Diagnostic device is
wrongly or not connected
to the segment
Fieldbus power supply
failed
Terminal failure: corrosion
Topology error - non-work-
ing topology
Device coupler failed
Devices detected during
commissioning are not
active
Devices detected during
commissioning are not
active
Wrong fieldbus power sup-
ply installed or wrong topol-
ogy configured
Fieldbus power supply
failed
Fieldbus power supply
failed
Fieldbus power supply
replaced with incompatible
model
Fieldbus power supply
failed
Fieldbus power supply
replaced with incompatible
model
Fieldbus power supply
failed
This is possibly a result of
other errors
Action(s)
Check if a terminator is
installed on both ends of
the trunk
Connect only one device to
a spur
Replace fieldbus power
supply module
Install fieldbus power sup-
ply
Check bulk power supply
Check device couplers and
device coupler terminals
Check cabling and termi-
nals
Check wiring connection to
the segment
Check and replace fieldbus
power supply
Check if the resistance of
any terminal is too high
Check if the topology is
valid according to the field-
bus specification
Check device couplers and
device coupler terminals
Solve other reported errors
first and check segment
again
Solve other reported errors
first and check segment
again
Replace fieldbus power
supply or correct topology
settings
Check and replace fieldbus
power supply
Check and replace fieldbus
power supply
Install correct fieldbus
power supply
Check and replace fieldbus
power supply
Install correct fieldbus
power supply
Check and replace fieldbus
power supply
Solve other reported errors
first and check segment
again
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