Rockwell Automation 1753-PCS-PAR Using RSLogix Guard PLUS! with GuardPLC Controllers - Manual (Page 91)

Publication 1753-PM001A-EN-P - November 2005
Create User-Defined Function Blocks 8-5
You can either define the variable here or use the Derivation Type
buttons (recommended). The Derivation Type buttons activate dialogs
to help declare a variable of the chosen type. Use these buttons to
ensure accurate syntax.
This button Defines a variable type
Direct derived directly from another variable type
Array array of one or more dimensions
For example:
ARRAY:array[1..10] of INT
• one-dimensional array of INT values
• ARRAY[7] accesses the 7th element
ARRAY:array[1..10,1..10] of REAL
• two-dimensional array of REAL values
• ARRAY[3,5] accesses the 3rd element of the 5th row