Controller Link Units Operation Manual
319
Error Log Section 9-3
Note 1. Applicable PLCs: CV = CVM1 and CV-series PLCs, CS/CJ = CS-series
and CJ-series PLCs, All = All models of PLC.
2. Errors indicated by error codes 0101 to 0116 are recorded only when the
frame was discarded because transmission was impossible.
3. Error code 0230 hex is only recorded for Controller Link Units with unit ver-
sion 1.2 or later.
0216 
Hex
Backup power supply error (Opti-
cal Units only)
00 Hex Backup 
power sup-
ply error dis-
tinction:
01 Hex: 
OFF to ON
02 Hex: ON 
to OFF
Check the status of 
the backup power 
supply and power 
supply cables.
No CS/CJ
021A 
Hex
Set table logic error 00 Hex 01 Hex: Net-
work param-
eters
02 Hex: 
Data link 
tables
03 Hex: 
Routing 
tables
Remake and set the 
appropriate data.
Check the unit ver-
sion.
Ye s A l l
021B 
Hex
Hardware error 00 Hex Error status 
(See note.)
Replace the Control-
ler Link Unit.
No All
021C 
Hex
Data link error inactive Not set Restart the Control-
ler Link Unit.
Ye s A l l
0220 
Hex
Reduced number of participating 
nodes (separated nodes)
Separated nodes 1 to 16 
correspond to bits 0 to 15 
(1st byte: bits 8 to 15, 2nd 
byte: bits 0 to 7)
Check the node 
parameters, the sep-
arated nodes, 
cables, and terminat-
ing resistance set-
tings.
No CS/CJ
0221 
Hex
Separated nodes 17 to 32 
correspond to bits 0 to 15 
(1st byte: bits 8 to 15, 2nd 
byte: bits 0 to 7)
0222 
Hex
Separated nodes 33 to 48 
correspond to bits 0 to 15 
(1st byte: bits 8 to 15, 2nd 
byte: bits 0 to 7)
0223 
Hex
Separated nodes 49 to 62 
correspond to bits 0 to 13 
(1st byte: bits 8 to 15, 2nd 
byte: bits 0 to 7)
0230 
Hex
Data link stop requested Start node 
address
Stop node 
address
Check the applica-
tion and Support 
Software operation if 
the data link was not 
intentionally stopped.
Ye s C S / C J
0300 
Hex
Packet discarded Not set Conduct an echo-
back test and find the 
cause of the error.
No All
0601 
Hex
Unit error Not set Check the operating 
environment.
Ye s A l l
Error 
code
Contents Detail code Correction Written to 
EEPROM
Applicable 
PLC
1st byte 2nd byte










