Pepperl+Fuchs HD2-DM-A Manual page 185

Advanced Diagnostics
Appendix
ID
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184
Phenomenon
Minimum signal level of the
segment is MR/OOS
Maximum signal level of
the segment is MR/OOS
Current motherboard type
different from expected
one
Fieldbus power supply A
different from fieldbus
power supply B or one slot
empty
One or more devices were
detected but not con-
stantly active during
recording
One or more devices were
detected but were not con-
stantly active during
recording
One or more devices were
detected but were not con-
stantly active during
recording
One or more devices were
detected but not con-
stantly active during
recording
No ADM connected
ADM Firmware too old
ADM Firmware is being
updated
Configuration error: Volt-
age limits
Cause(s)
Too many terminators
Device malfunction: Signal
level is too low
Terminal failure: corrosion
Not enough terminators
Trunk breakage between
device couplers
Motherboard Type
changed compared to
commissioning
Power supply mismatch
Defective device, device
removed or added, com-
munication failure
Defective device, device
removed or added, com-
munication failure
Defective device, device
removed or added, com-
munication failure
Defective device, device
removed or added, com-
munication failure
No ADM with the address
used for this Transducer
Block is connected to the
diagnostic bus
The firmware of the ADM is
outdated for use with the
diagnostic gateway
Firmware update for ADM
is executed
Segment voltage limits are
set to invalid values (e.g.
low limit higher than high
limit)
Action(s)
Check that one terminator
is installed on each end of
the trunk cable, but no
more than these two in total
Replace device
Check if the resistance of
any terminal is too high
Check if a terminator is
installed on both ends of
the trunk
Check trunk cable and
device coupler terminals
Check if the installed moth-
erboard is the desired one
and execute the commis-
sioning wizard or replace
the motherboard
Two different types of field-
bus power supplies are
installed for the same seg-
ment. This is not allowed.
Use only one type of field-
bus power supply for this
segment.
Check report for affected
devices
Check report for affected
devices
Check report for affected
devices
Check report for affected
devices
Check if all required ADMs
are connected and the
addresses are set correctly
Update firmware to version
1.4 or newer
Wait for the firmware
update to be completed
Correct segment voltage
limits