Omron SYSMAC CX-Programmer 8.1, Operation Manual

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Miscellaneous Section 3-5
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3-5 Miscellaneous
3-5-1 Array Variables
Array variables can be used with CX-Programmer.
Array variables can handle a wide selection of data elements of the same data type.
Individual values in an array variable are specified using an indexed variable name.
Example: Variable Name [Index]
The index of an array variable indicates the position of the data element within the
array.
Example: bflag[5] (Numeric Value)
Example: bflag[a] (Variable)
Example: bflag[a+b] (Variable and Arithmetic Operators)
For SFC programs, ladder programs, action programs within SFC programs, and
ladder programs within transition programs, the index must be a numeric value.
Variables cannot be used as the index.
For ST programs, the index can be defined by both numeric value and variables.
For CJ2-series CPU Units, the index can be defined by both numeric value and
variables for ladder programs.
Note: For details on array variables, refer to the CX-Programmer Operation Manual (Cat. No.
W446) and the CX-Programmer Operation Manual – Function Blocks and Structured Text
(Cat. No. W447).
Inserting an Array Variable
1 In the project workspace, select and right-click Symbols folder, and select Insert
Symbol from the pop-up menu.
2 Specify the variable in the displayed New Symbol dialog, and click Advanced
Settings .