Enter FB in a main scan program(Ladder Logic)

To enter FB in a Ladder Logic, click Project Window and add scan program.

Click the desired location on the Rung where you want to enter FB and press Shift+F9 or click      .

Function Block Diagram appears as below.

Open

Choose FB in User Library or System Library and click OK.

If you click the FB name, detailed variable appears on FB Review.

Open

To set device address for FB variable, double-click FB.

If Scan program is complete, click File and choose Save Program.

Click Tool and Choose Compile All+Link.

Check Message Window in case of error.