9 Troubleshooting and Maintenance
9-22
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
*1 The 7-segment indicator will alternate between the Unit's node address and the code given in the tables in this section.
Indicators Error
category
Error Likely cause DeviceNet Unit
response
Error
log
(Hex)
MS NS 7-seg-
ment
*1
Red
(flashing)
-HACPU Unit
exchange
CPU Unit
memory
faulty
A parity error occurred
while reading the routing
table.
• Records the error in the
error log and continues
processing
• The routing table is
treated as missing.
0012
Red
(flashing)
- Hb CPU Unit
faulty (Hb)
A timeout occurred while
reading the routing table.
• Continues processing
but data exchange with
the CPU Unit is stopped.
• The routing table is
treated as missing.
• Records the error in the
error log.
0011
Red
(flashing)
- HC Routing
table logic
error
There is an error in the
contents of the routing
table.
• Records the error in the
error log.
• The routing table is
treated as missing and
processing continues.
021A
Red
(flashing)
-
Hd I/O refresh
error
• The I/O areas set in the
master scan list or slave
scan list do not exist in
the CPU Unit.
• This error can occur
when the Unit is
mounted to a different
CPU Unit with a different
number of EM banks or
EM that has been con-
verted to file memory.
Note This error may occur
during remote I/O
communications, too.
Stops remote I/O commu-
nications for the function
(master or slave) using the
non-existent area.
Note There is a possibility
that this error will
occur again. If it
does occur again,
restart remote I/O
communications to
return the system to
normal operation.
0347
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