Panasonic GM1 User Manual page 162

6.6 Function and Function Block
The POU object is displayed as "function-name (FUN)" in the navigator pane.
4.
Enter function processing.
Open the POU object of the function and create a function.
In "VAR_INPUT", declare input variables for the function.
Substitute function output for the variable of the function name.
This completes the function creation procedure.
Next, the procedure for invoking the created function is explained below.
5.
Open the POU object from which the function is to be invoked, and invoke the function.
The function can be invoked by using its name. To invoke the function, there is no need to
declare variables.
Example: Invoking the function from LD program
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