A-113
Appendices
NJ-series CPU Unit Software User’s Manual (W501)
A-10 Size Restrictions for the User Program
App
A-10-1 User Program Object Restrictions
*1 The NULL character at the end must be counted. Therefore, there are 1,985 single-byte characters in a
string that has a size of 1,986 bytes.
Data type definitions are subject to the following restrictions.
*1 Refer to Number of Data Type Definitions on page A-115 for information on counting data types.
The constants (literals) are subject to the following restrictions.
Restriction
CPU Unit model
NJ501- NJ301-
Maximum number of elements per array 65,535 65,535
Maximum number of dimensions in an array 3 3
Maximum value of a subscript (element number) for an
array
65,535 65,535
Maximum size in bytes
*1
of a string variable
1,986 1,986
Restrictions to Data Type Definitions
Restriction
CPU Unit model
NJ501- NJ301-
Maximum number
*1
of data type definitions
2,000 1,000
Maximum number of levels in a structure defi-
nition
88
Maximum number of members in a structure
definition
2,048 2,048
Maximum number of members in a union defi-
nition
44
Maximum number of enumerators in an enu-
meration definition
2,048 2,048
Restrictions to Constants (Literals)
Restriction
CPU Unit model
NJ501- NJ301-
Maximum size in bytes of a constant (literal) 1,985 1,985
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