Nate,
Your response sparked an idea. Rather than using a parent PLC symbol, use the parametric build and match the single point I/O symbols to that. This does work, but lacks the automatic xref on the parametric build. An xref attribute can be added (XREF_), but there needs to be some method to associate the xref with the I/O address.
The capability for this would be very good for those of us who show the PLC modules on separate sheets in the same sequence as the physical locations on the PLC rack. We've been using wires and S/Ds for this, which works, but is rather labor intensive. Is this doable or just a pipe dream?
See the attached drawing. Thanks.
Martin