We have a function block, which was originally written in ladder language, but somehow is only visible in STL language. It stays in STL when we do View Ladder. How can we make it back to Ladder ? See attached FB1_ . 

Ziemens

We have a function block, which was originally written in ladder language, but somehow is only visible in STL language. It stays in STL when we do View Ladder. How can we make it back to Ladder ? See attached FB1_ . 

The code segment may have started out as LAD code. But it was edited in STL. To get it to LAD is going to take effort. Just to mention one thing: the TAK instruction does not exist in LAD.

Coding in LAD to get the equivalent function may easily go with wrong coding which will cause you sorrow. The unpopular suggestion: In the long run it will be better for you to learn STL.