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Advanced Diagnostics
Appendix
ID
254
255
256
257
258
259
260
261
263
264
265
266
Phenomenon
Configuration error: Cur-
rent limits
Configuration error: Signal
level limits
Configuration error: Unbal-
ance limits
Configuration error: Jitter
limits
Configuration error: Noise
limits
Configuration error: Dupli-
cate configured node
addresses
Configuration error: Node
signal level limits
Segment is disabled
Diagnostic gateway is in
FDS mode. ADMs are not
handled
Address collision on diag-
nostic bus channels
Too many devices active
on the fieldbus
A device coupler Out of
specification alarm is
detected for one device
Cause(s)
Segment current limits are
set to invalid values (e.g.
low limit higher than high
limit)
Segment signal level limits
are set to invalid values
(e.g. low limit higher than
high limit)
Segment unbalance limits
are set to invalid values
(e.g. low limit higher than
high limit)
Segment Jitter limits are
set to invalid values (e.g.
value out of range)
Segment noise limits are
set to invalid values (e.g.
value out of range)
Two devices with the same
address are configured for
this segment
The signal level limits of at
least one device is set to
invalid values (e.g. low limit
higher than high limit)
The diagnostic function for
this segment is disabled
The diagnostic gateway
can be used in FF or in
FDS mode. You are cur-
rently accessing the diag-
nostic gateway using FF
but it is configured for oper-
ation with an FDS.
ADMs with the same
address are used on both
diagnostic buses of the
ADM
More devices on bus than
diagnostic gateway can
handle
An ELS or a surge protec-
tor sends an alarm. Device
coupler LED should blink
three times
A diagnostic value exceeds
defined value. The device
coupler LED should blink
two times
Action(s)
Correct segment current
limits
Correct segment signal
level limits
Correct segment unbal-
ance limits
Correct segment Jitter lim-
its
Correct segment noise lim-
its
Remove the duplicated
entry from the configured
devices
Check and correct signal
level limits for the config-
ured devices
Check if this segment is
unused or whether the
diagnostic is supposed to
be enabled
Check the intended inte-
gration and set the diag-
nostic gateway mode
parameter inside the
resource block as required
Change the address to
only have unique
addresses
Reduce the number of
devices including the host
to 18 or below
Check device sending the
alarm and check any ELS
and surge protectors con-
nected to it
Check the device coupler
manual for details
185
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