3-45
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-2 Errors in the PLC Function Module
54016443 hex Positive Limit Input An instruction was exe-
cuted for a motion in the
positive direction when the
positive limit input was ON.
• An instruction for a
motion in the positive
direction was exe-
cuted when the posi-
tive limit input was
ON, or an instruction
for a motion with no
direction specification
was executed when
the positive limit input
was ON. An axes
group motion control
instruction was exe-
cuted when the posi-
tive limit input was
ON.
S NJ-series
Instruc-
tions Ref-
erence
Manual
(Cat. No.
W502)
54016444 hex Negative Limit
Input
An instruction for a motion
in the negative direction
was executed when the
negative limit input was
ON.
• An instruction for a
motion in the negative
direction was exe-
cuted when the nega-
tive limit input was
ON, or an instruction
for a motion with no
direction specification
was executed when
the negative limit input
was ON. An axes
group motion control
instruction was exe-
cuted when the nega-
tive limit input was
ON.
S Same as
above.
54017422 hex Servo Main Cir-
cuits OFF
An attempt was made to
turn ON the Servo when
the main circuit power sup-
ply to the Servo Drive was
OFF.
• An attempt was made
to turn ON the Servo
when the main circuit
power supply to the
Servo Drive was OFF.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Refer-
ence
Maj Prt Min Obs Info
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