Pepperl+Fuchs HD2-DM-A Manual page 190

Advanced Diagnostics
Appendix
ID
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291
Phenomenon
"Out of specification" alarm
of a device coupler
detected for several
devices
An unclassified error
detected for the segment
An unclassified error
detected for the segment
Devices with default
addresses are active
One or more device tags or
Device IDs are different to
the given topology
One or more device tags or
Device IDs are different
compared to commission-
ing
Number of active devices
different to Segment
Checker design
More than 32 devices are
active
More than 32 devices are
active
Signal level of one or more
devices is too high
Cause(s)
An ELS or a surge protec-
tor sends an alarm. Device
coupler LED should blink
three times
ELS sends alarm. The
device coupler LED should
blink three times
An empty spur is short cir-
cuited or shows bad cur-
rent changes
A diagnostic value exceeds
defined value. The device
coupler LED should blink
two times
Unidentifiable error is
detected
Unidentifiable error is
detected
One or more devices with
default address(es) are
active
One or more device tags or
Device IDs documented in
PC software differ from cur-
rently active devices
One or more device tags or
Device IDs recorded during
commissioning differ from
currently active devices
Device count of the Seg-
ment Checker file differs
from currently active
devices
More than 32 devices are
connected to the segment
More than 32 devices are
connected to the segment
Trunk breakage between
device couplers
Not enough terminators
Action(s)
Check device sending the
alarm and check any ELS
and surge protectors con-
nected to it
Check ELS of the device
coupler with active alarms
Check empty spurs of the
corresponding device cou-
pler
Check the device coupler
manual for details
Check detailed measure-
ments
Check detailed measure-
ments
Assign a permanent
address to the device
Check and correct device
tags
Correct device tags or exe-
cute commissioning again
Check active devices and
segment design
Remove devices from the
segment
Remove devices from the
segment
Check trunk cable and
device coupler terminals
Check if a terminator is
installed on both ends of
the trunk
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