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3.2.8 Creating an FBD program
3 CREATING PROGRAM IN STRUCTURED LADDER/FBD LANGUAGE
GX Works2
3.2.8 Creating an FBD program
Create an FBD program using the same procedure for Structured Ladder programs without using left
power rail on the left for Structured Ladder.
Display or hide left power rail by selecting [Edit] on the menu bar, selecting [Ladder Symbol], and
clicking [Left Power Rail].
Or hide Left Power Rail by clicking on the Structured Ladder/FBD tool bar.
Refer to 3.1.2 for an FBD program.
Displaying or hiding left power rail
● Even while left power rail are displayed, you can create an FBD program by ignoring left power rail.
● If you try to delete a left power rail to which a function, etc. is already connected, the left power rail is not
deleted.
Delete a connection to the left power rail first, and then delete the left power rail.
● It is not possible to create programs in the symbolic expression using FBD.
When using FBD, create programs in the functional expression using functions and operators.
Creating two or more ladders in one ladder block
When creating an FBD program, you can create two or more ladders in one ladder block. In this case, a
warning is displayed during compiling.
It is possible to hide this warning by adding an optional setting.
Select [Tool] [Options] to display the Options screen.
On the Options screen, select "Compile" "Output Result" "Disable Warning Codes", enter "C2034",
and click the
button button.