[?]: I have to change an old S5-150U against a S5-155U

[Actimell]

Hello !
Can anybody help me ?

I have to change an old S5-150U against a S5-155U.
Therefore I have to change some things in the program I know.
In one of the FBs there is the line "L BS 34".
I have to know which BS I have to load in the S5-155U to achieve the same thing.
I have no documentation about the S5-150U where I can find the meaning of the BS 34.

Thank you !