RussB, you sound like you've got a lot of GE experience, I was hoping you could comment on this:
I created some low level UDFBs (call them a,b,c,and d) for conveyor and stop control, and created another UDFB (call it X) with multiple instances of a,b,c,d as members. I debugged an instance of X just fine, then created another instance called Y, changed the I/O references, and then experienced crazy behavior. It was like X & Y both shared a common instance of a,b,c,d. The I/O state for each instance had to match for anything to work (ie, part present on both X & Y conveyors had to be true before a stop would actuate and then both stops on X & Y would actuate). Is this something beyond the Proficy (v6.5 on RX3i) capability or did I do something wrong? Thanks in advance, Jeff