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Using the LED Indicators and Display for Troubleshooting Section 14-2
Flashing
red
--- HA CPU Unit
memory error
A parity error
occurred during
an operation
such as reading
the routing
tables.
Records the error in
the error log. If the
routing tables were
being read, the rout-
ing tables are treated
as missing.
0012 Register the rout-
ing tables in the
CPU Unit again
and restart the
CPU Unit.
Replace the CPU
Unit if the error
recurs.
A memory error
has occurred for
the tag data-
base in the CPU
Unit (CJ2H/
CJ2M CPU Unit
only).
• If a symbol (tag
name) is specified in
the tag data link or
Unit Status Area,
refreshing the user-
specified status area
is stopped and tag
data links will oper-
ate as follows:
• Tag data link com-
munications will be
stopped for origina-
tor connections.
• Communications will
continue for target
connection. If PLC
status is included in
the communications
data, the target node
PLC error flag for
the relevant target
node will be turned
ON.
Note Recovery is
possible from
this error. If
recovery is
achieved, the
tag data links
will be
restarted to
return to nor-
mal status.
0017 Download the tag
data to the CPU
Unit again.
Replace the CPU
Unit if the error
recurs.
Flashing
red
Not lit Hb CPU Unit
event servic-
ing timeout
A timeout
occurred during
an operation
such as reading
the routing
tables to the
CPU Unit.
Operation stops. 0011 Replace the Ether-
Net/IP Unit or (for a
built-in EtherNet/IP
port) the CPU Unit.
if the error recurs
when the Unit is
restarted.
Flashing
red
--- HC Routing table
error
There is a logic
error in the rout-
ing table set-
tings.
The Unit continues
operating without the
routing tables.
021A Create the routing
tables again.
Flashing
red
--- Hd I/O refresh
error
The EM Area
bank in which
the device
parameters
were set was
converted to file
memory while
the tag data link
was operating.
Tag data is not
refreshed if it is
assigned to a non-
existent area.
Note:
Recovery is possible
for this error.
0347 Stop using the EM
Area bank (in
which the device
parameters were
set) as file mem-
ory, or correct the
device parameters.
Indicator Error Cause Unit operation (Flag
status)
Error
log
(hex)
Countermeasure
MS NS 7-segment