User guide

Maintenance
840 USE 115 00 Version 1.0
55
6.1.4 Link LED
If the
Link
LED fails to li
g
ht, the module is not communicatin
g
with the Ethernet
hub.
Troubleshooting 1.
Make sure that the cable has been installed correctl
y
and the module is
functionin
g
properl
y
.
2.
Verif
y
that the hub is workin
g
properl
y
.
6.1.5 Kernel LED
If the
Ready
LED is on and the
Kernel
LED is flashin
g
, the module has detected an
invalid software ima
g
e. If the
Ready
LED is on and the
Kernel
LED is shinin
g
steadil
y
, an attempt to download a software ima
g
e has failed and the module is in
kernel mode.
In either case, download a new software ima
g
e, usin
g
the procedure on pa
g
e 61.
6.1.6 Fault LED
The
Fault
LED will flash briefl
y
followin
g
an error as the module attempts to
recover. The
Fault
indicator will remain on onl
y
when the error lo
g
is full
(
the error
lo
g
has space for 1023 entries
)
. In that case, the module will be unable to recover.
Use the ERRLOG utilit
y
to clear the error lo
g
, as described on pa
g
e 57.
Figure 26 LED Display When the Error Log is Full
Fault
Link
ETHERNET TCP/IP
Appl
Active
140
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