Programs

The program is a global program element reflecting multiple input parameter values for many output parameter values. The program is similar to function block. The program is the largest program component of all. The upper project layer is defined with the help of programs. Programs are global components.

Reference to variables and program call are much alike function block incident operation. A right project from the point of view of the standard should include one or several programs associated with tasks. Generally, function and function block count is much larger.

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