search for I/O used in Program
Its quite simple !!
You just have to make a Right Click on that paricular Item/IO , and then select Search.
It may ask you then to save then your currently opened program.
Ahead,it will take you in Search tool.
It will be showing you the locations, where it is located.
If not, then first make REBUILD option on right side in that search tool, and then Search it again.
It will work !!
also, if you are searching for any Global variable, which is associated on a particular IO card, then right click on that variable, and select GO TO SOURCE.