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5 Understanding Programming

5-60

CJ2 CPU Unit Software User’s Manual

Using Array Variables as Members of Data Structures

Arrays can be used as members of a data structure when there is a specific overall structure to the

data with members that each contains multiple elements in library fashion. Members can be freely

specified from the arrays. This is used when data is built from libraries.

Example: Communications frames can be created by selecting elements from libraries.

For detailed information on data structure specifications and creation procedures, refer to the CX-

Programmer Operation Manual: Function Blocks and Structured Text (Cat. No. W447).

Structure variable S

Member

A(1) of S

Array variable that

is a member of

the data structure

B(1) of S

A(x)

B(x)

0001Hex

0101Hex

Structure variable for communications frames

Member

Address(x)

Command(x)

Data

For communications frame address(1)

Array variable that

is a member of the

data structure

Addresses

0000 hex

0001 hex

000A hex

For communications frame command(1)

Commands

0001 hex

0101 hex

1002 hex

Omron CJ2 CPU UNIT SOFTWARE User Manual

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