Arrays - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

4.4

Arrays

An array represents a consecutive aggregation of same data type labels as a single name.
Primitive data types and structures can be defined as arrays.
• One-dimensional array
Label name Index
[0] [1] ...
bLabel1
Defining arrays
■ Array elements
When an array is defined, the number of elements, or the length of array, must be determined. For the range of the number of
elements, refer to the following.
Page 44 Range of the number of array elements
■ Dimension number of multidimensional array
Up to three-dimensional array can be defined.
■ Definition format
The following table lists definition format.
The range from the array start value to the array end value is the number of elements.
Number of Format
array
dimensions
One dimension Array of primitive data type/structure name (array start value..array end value)
[Definition example] Bit (0..15)
Two dimensions Array of primitive data type/structure name (array start value..array end value, array start value..array end
value)
[Definition example] Bit (0..1, 0..15)
Three Array of primitive data type/structure name (array start value..array end value, array start value..array end
dimensions value, array start value..array end value)
[Definition example] Bit (0..2, 0..1, 0..15)
■ Initial value
One initial value can be set for a single array definition. (Different initial values cannot be set for each element.)
The same initial value is stored in all the array elements.
[n]
• Two-dimensional array
Label name Index
[0,0] [0,1]
bLabel2
[1,0] [1,1]
· · ·
[m,0]
[0,n]
·
·
[m,n]
Remarks
• For the primitive data
type:
Page 40 Primitive data
type
• For the structure name:
Page 46 Structures
4 LABELS
4.4 Arrays
4
43