9 Troubleshooting and Maintenance
9-26
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)
L9 Slave
function
Remote
I/O com-
munica-
tions error
A timeout occurred during
remote I/O communica-
tions using the slave func-
tion.
If slave has outputs, the
status of those outputs is
determined by the
hold/clear outputs setting
for communications errors.
0345
Red (lit) OFF OFF Unit Special
Unit error
- • Records the error in the
error log.
• Stops the Unit.
0601
- - - CPU Unit CPU Unit
major fault
- Output data is set to 0.
(With the master, these
are output bits. With the
slave, these are input bits
to the other master.)
-
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