Variable

A variable is a container to store data used in a task. A variable can reference or overwrite a value by statement processing and direct entry.

Types of variables are as follows:

Global variable

Variable which is already defined by the system setting. It can be referred from all the tasks. Values are retained even when the controller is shut off.

Local variable

Variable which is named and created (declared) in PacScript program (task) by user. It is declared (created) and created in the procedure or declarative part of the program. Valid range (scope) and save area are selective depending on the attribute.