Call function block from st
I have just started to migrate to ST - these big diagrams gets messy in the long run ;)
Now I'm just trying to call a function block from st.
But i always get 'no value'.
My question is, how do I call ph_control_hourly and get the value of the variable 'out'?
Thanks a lot
Martin Kudláček last edited by
you didn't pass any input value to the ph_control_hourly(), so the block doesn't know anything about run_at_time and ph_hourly_feed.
The call should look this:
ph_control_hourly(run_at_time := local_run_at_time, ph_hourly_feed := local_ph_hourly_feed, out => local_out_value)
If you look in to the help (F1) of any built-in FB, you will see a usage and you learn how the ST works: