S7 - is it possible to indirectly call an FC?

[uptown47]

Hi all,

I'm looking through some software that has LOTS of FCs that are 'orphaned' in the Program Structure (they have a cross through the box as though they aren't being called).

There's loads of them and I suspect that some/all of them *are* actually called?

Is there a way of hiding a call from the system so that it thinks the block isn't called but, actually, it is? Maybe some way of indirectly calling the block or something?

Any ideas welcome? Thanks

 

[Bratt]

Yes its possible!

Example of indirect call

L     999
T myFcNumber
UC    FC [myFcNumber] // Call FC 999

 

[Bratt]

Create a source file of the complete project and search for the text "UC FC" or "UC"

 

[uptown47]

Create a source file of the complete project and search for the text "UC FC" or "UC"

Great stuff Bratt. Thanks for the advice. I'll do that.

Do you know if there's another ways apart from a UC or CC to indirectly call a block? Is there any SFC's or SFB's etc that will execute calls that you know of ?

Thanks

 

[uptown47]

Create a source file of the complete project and search for the text "UC FC" or "UC"

Boom!! And there we have it....

L  #ProgNo
T  #FCblock
UC  FC[#FCblock]

Great stuff. Cheers

 

[Bratt]

Is there any SFC's or SFB's etc that will execute calls that you know of ?

No i am not aware of any SFC/SFB that can do this. Maybe someone else does? But it looks like you found your culprit so to that!