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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