3-143
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-9 Errors in CJ-series Units
74620000 hex Scan List
Regis-
ter/Clear
Failed
An operating error
occurred when reg-
istering or clearing
the scan list by per-
forming one of the
following opera-
tions.
• CPU Unit is not in PROGRAM
mode.
• Request processing is not pos-
sible in this status or the
request was made when the
operation was already in prog-
ress. The following are the main
causes of Unit status errors.
• A software switch operation
for the master function was
executed when the master
function was disabled.
• A switch that can be used
only when the scan list is dis-
abled was used when the
scan list was enabled.
• A switch that can be used
only when the scan list is
enables was used when the
scan list was disabled.
• A software switch operation
for the slave function was
executed when the slave
function was disabled.
• A configuration error has
occurred.
• There is an error in the parame-
ters specified in the user set-
tings, and the requested setting
could not be made.
• More than one software switch
changed to TRUE at the same
time. Or, another software
switch changed to TRUE before
processing was completed for a
previous software switch.
S CJ-series
DeviceNet
Units Opera-
tion Manual for
NJ-series
CPU Unit (Cat.
No. W497)
74630000 hex Slave Func-
tion
Enable/Dis-
able Failed
An error occurred in
one of the following
operations in the
slave function.
• An attempt was made to enable
the slave function when it was
already enabled.
• An attempt was made to dis-
able the slave function when it
was already disabled.
• CPU Unit is not in PROGRAM
mode.
• More than one software switch
changed to TRUE at the same
time. Or, another software
switch changed to TRUE before
processing was completed for a
previous software switch.
S Same as
above.
74640000 hex Slave Fixed
Allocation
Area Setting
Failed
An error occurred in
one of the following
operations for fixed
allocation of the
slave.
• The slave function is not dis-
abled.
• CPU Unit is not in PROGRAM
mode.
• More than one software switch
changed to TRUE at the same
time. Or, another software
switch changed to TRUE before
processing was completed for a
previous software switch.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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