Appendices
A-30
NJ-series Instructions Reference Manual (W502)
Name Undefined CJ-series Memory Address Error code 16#0413
Meaning The required specification is missing for a variable for which CJ-series Unit memory must be specified.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The required AT specification is miss-
ing for a variable for which CJ-series
Unit memory must be specified.
Correct the program so that it uses
the AT specification to specify CJ-
series Unit memory when doing so is
required by the variable.
Write the program so that it uses an
AT designation to specify CJ-series
Unit memory when doing so is
required by the variable.
Precautions/
Remarks
None
Name Stack Underflow Error code 16#0414
Meaning There is no data in a stack.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
An attempt was made to read data
from a stack that contains no data.
Correct the program so that the data
is read only after it is stored in the
stack.
Correct the program so that the data
is read only after it is stored in the
stack.
Precautions/
Remarks
None
Name Illegal Number of Array Elements or Dimensions Error code 16#0416
Meaning The valid range was exceeded for the number of array elements or dimensions in an array I/O parameter for an instruc-
tion.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The valid range was exceeded for the
number of array elements or dimen-
sions in an array I/O parameter for an
instruction.
Correct the instruction so that the
valid range for the number of array
elements or dimensions in an array
I/O parameter is not exceeded.
Correct the instruction so that the
valid range for the number of array
elements or dimensions in an array
I/O parameter is not exceeded.
Precautions/
Remarks
None
Name Specified Task Does Not Exist Error code 16#0417
Meaning The task specified for the instruction does not exist.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The specified task does not exist. Correct the user program so that it
specifies an existing task.
Write the user program so that it
specifies only existing tasks.
Precautions/
Remarks
None
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