3 Error Tables
3-48
NJ-series Troubleshooting Manual (W503)
64560000 hex Illegal Follow-
ing Error
The difference
between the com-
mand position and
the actual current
position exceeds
the range of 30-bit
data when con-
verted to pulses.
• The command current position
was restricted so that the axis
velocity of the slave axis would
not exceed the axis maximum
velocity for the specified travel
distance.
• Performance of slave axis posi-
tioning operation is poor and
the actual motion is slower than
the command.
S NJ-series
CPU Unit
Motion Con-
trol User’s
Manual (Cat.
No. W507)
64570000 hex Servo OFF
Error
The Servo was
turned OFF for an
axis due to an axes
group error.
• The Servo was turned OFF for
an axis due to an axes group
error.
S Same as
above.
64580000 hex Absolute
Encoder Cur-
rent Position
Calculation
Failed
It was not possible
to correctly restore
the current position
from the absolute
encoder information
that was saved
when power was
interrupted.
• The ring counter setting in the
Controller or the ring counter
setting in the Servo Drive set-
tings was changed.
• The position to restore when
converted to pulses exceeded
the range of signed 40-bit data.
S Same as
above.
64590000 hex Home Unde-
fined during
Coordinated
Motion
Home of the logical
axis became unde-
fined during axes
group motion or
while decelerating
to a stop.
• The command position or
actual position overflowed or
underflowed for a logical axis in
an axes group motion or a logi-
cal axis that was decelerating to
a stop and the home definition
was lost.
• A slave communications error
occurred for a logical axis and
home became undefined during
axes group motion or while
decelerating to a stop.
• A slave for a logical axis left the
network or was disabled and
home became undefined during
axes group motion or while
decelerating to a stop.
S Same as
above.
74210000 hex Servo Main
Circuit Power
OFF
The main circuit
power of the Servo
Drive turned OFF
while the Servo was
ON.
• The main circuit power of the
Servo Drive was interrupted
while the Servo was ON.
S Same as
above.
74230000 hex Interrupt
Feeding
Interrupt Sig-
nal Missing
An interrupt input
was not received
during execution of
an MC_MoveFeed
(Interrupt Feeding)
instruction.
• T
he latch enabled range speci-
fication is inv
alid.
• There is a problem with the wir-
ing of the interrupt signal.
• The sensor that outputs the
interrupt signal has failed.
S Same as
above.
74240000 hex Homing
Opposite
Direction
Limit Input
Detected
The limit signal in
the direction oppo-
site to the homing
direction was
detected during a
homing operation.
• The Operation Selection at
Negative Limit Input or Opera-
tion Selection at Positive Limit
Input parameter is set to No
reverse turn.
• The location of the homing
input signal sensors, homing
settings, and homing start posi-
tion cause a limit input to be
reached.
• The input signal sensor wiring
is incorrect or the sensor is
faulty.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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