Excuse me if these are basic questions , but this is my first time working on someone else program , we have this complex machinery program that is seemingly working , but I need to test some I/O and change basic things from NC to NO . I have two hurdles .

1/ I can't seem to find where Profinet module I/Os are used in the program ( can't cross reference them ) and the only thing i could do is through the watch table .

2/ I need to find how the Hardware Digital and Analog I/Os are referenced in the program , from the CPU module i can't crossreference the %I and %O to where they are used in the program !

Hello bejb,

You must go to PLC tags and click on the tag you want to see the cross-references (for example %I200.0) once selected, from Tools -> Cross-references you will be able to se the cross-references for that I/O.

Let me know if that is what you are looking for.