9 Troubleshooting and Maintenance
9-16
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)
- E8 Memory
access
Master
scan list
logic error
There is an error in the
contents of the master
scan list stored in non-vol-
atile memory.
• Records the error in the
error log.
• The master remote I/O
communications will be
stopped.
• Data exchange, slave
operation, and message
communications with the
CPU Unit will continue.
Normal operation will
resume when the master
scan list is written nor-
mally. (Start the master
remote I/O communica-
tions.)
021A
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