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7-5
7 Troubleshooting and Maintenance
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
7-1
T
roub
lesho
o
ting
wit
h
t
h
e PROFIN
ET IO Con
trol
ler Unit Ind
icato
rs
7
7-1
-2
T
roubleshooting Er
rors
Oc
cu
rring in the PROF
INET IO
Contr
oller
Unit
Ethernet Failure
Bus Hardware Error
Special Unit Error
Memory Access Error
PROFINET Network Errors
Error log
(Hex)
Likely cause
Unit response
Device Variable Flag
Correction
020C
The PROFINET IO Controller
could not establish a Ethernet
link to the connected switch or
IO Device.
The Unit is not capable to
communicate on the
PROFINET network and
therefore control to the
IO Devices will be lost.
The Unit will stop pro-
cessing. Records the
error in the error log.
(IO Controller status 2)
*_HwErr will
be TRUE.
Check the Ethernet cable
and switch or IO Device
Restart the IO Controller.
Error log
(Hex)
Likely cause
Unit response
Device Variable Flag
Correction
0219
Disturbance on the Ethernet
network causes the Ethernet
interface to fail.
The Unit is not capable to
communicate on the
PROFINET network and
therefore control to the
IO Devices will be lost.
he Unit will stop process-
ing. Records the error in
the error log.
(IO Controller status 2)
*_HwErr
will be TRUE.
Check the ethernet net-
work for possible causes
of disturbance. This can
be EMC influences, bro-
ken or shorted Ethernet
cable, faulty connectors,
defective Ethernet
switches or IO Devices
and grounding problems
to name a few. This will
result in interrupted data
streams or broken mes-
sages.
Memory Access Errors
Error log
(Hex)
Likely cause
Unit response
Device Variable Flag
Correction
0501
The PROFINET IO Controller
encountered an internal error
and cannot continue.
The Unit will stop pro-
cessing Records the
error in the error log
None of the bits are set.
Restart the IO Controller.
Replace the IO Controller
if the error recurs.
Error log
(Hex)
Likely cause
Unit response
Device Variable Flag
Correction
0502
During startup the IO Control-
ler encountered a problem
reading the PROFINET IO
Configuration file. This could
be because the Unit started for
the first time and does not con-
tain a configuration file yet.
The Unit is started and is
capable to receive a
PROFINET Configura-
tion. It will not initiate
PROFINET IO Communi-
cation. Records the error
in the error log.
(IO Controller status
1)
*_ValidCfgSta
will be
FALSE.
Use the CX-Configura-
torFDT to download a
valid PROFINET IO Con-
figuration in the IO Con-
troller. Replace the IO
controller if the error
recurs.