3   Error Tables
3-42
NJ-series Troubleshooting Manual (W503)
The section provides tables of the errors (events) that can occur in the Motion Control Function Module.
They are divided into the following functional classifications.
• General motion control
• Motion control instructions
Motion control instruction errors occur when a motion control instruction is executed. Notification of
these errors is provided as events, but also the upper four digits of the event code is output to the
ErrorID output variable of the motion control instruction and to the *.Lvl.Code system-defined variable
for motion control.
3-1-3 Errors in the Motion Control Function Module
General Motion Control
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
14600000 hex Absolute 
Encoder 
Home Offset 
Read Error
The absolute 
encoder current 
position that is 
retained during 
power interruptions 
was lost.
• The life of the Battery in the 
CPU Unit has expired.
• Backup memory failure
S NJ-series 
CPU Unit 
Motion Con-
trol User’s 
Manual (Cat. 
No. W507)
14610000 hex Motion Con-
trol Parame-
ter Setting 
Error
The MC parameters 
that were saved in 
non-volatile mem-
ory are missing.
• The power supply to the Con-
troller was interrupted or com-
munications with the Sysmac 
Studio were disconnected while 
downloading the motion control 
parameter settings or clearing 
memory.
• Non-volatile memory failure
S Same as 
above.
14620000 hex Cam Data 
Read Error
The cam data that 
was saved in non-
volatile memory is 
missing.
• Power was interrupted during 
save processing for cam data
• Non-volatile memory failure
S Same as 
above.
34600000 hex Required 
Process Data 
Object Not 
Set
The object that is 
required for the axis 
type is not allocated 
to PDO.
• The required PDOs are not 
mapped when the axis type is 
set to a servo axis or encoder 
axis.
• Non-volatile memory failure
S Same as 
above.
34630000 hex Axis Slave 
Disabled
The slave to which 
the axis is assigned 
is disabled.
• The slave to which the axis is 
assigned is disabled.
S Same as 
above.
34640000 hex Network 
Configura-
tion Informa-
tion Missing 
for Axis Slave
The network config-
uration information 
is not registered for 
the slave to which 
the axis is 
assigned.
• The EtherCAT network configu-
ration information is not regis-
tered for the slave to which the 
axis is assigned.
S Same as 
above.
44200000 hex Motion Con-
trol Initializa-
tion Error
A fatal error 
occurred in the sys-
tem and prevented 
initialization of the 
Motion Control 
Function Module.
• Hardware has failed. S Same as 
above.
74200000 hex Motion Con-
trol Period 
Exceed
ed
Processing for the 
primary periodic 
task was not fin-
ished within two 
control periods.
• The processing load in the pri-
mary periodic task is too heavy.
S Same as 
above.
14630000 hex Cam Table 
Save Error
Saving a cam table 
to a file failed.
• Saving a cam table to a file 
failed.
S Same as 
above.