Structure

A structure is a complex data type defined as a set of members.

Members of a structure can have various data types.
- A member of a structure can have dimensions or can be an instance of another structure.
When a structure is defined, it can be used like other data types to declare variables.
Members of a structure can have an initial value.
- Corresponding members of all declared variables having this structure type are initialized with the initial value of the member.
To specify a member of a structured variable in PLC languages, use this notation:

    VariableName.MemberName

Limitation

If a member of a structure is an instance of another structure, the nested structure must be declared BEFORE in the list.