What I learned boiled down to trade-offs:
Do not try to make TIA Portal itself portable. Instead, make the operating system portable. sinumerik 840d sl step 7 toolbox v16 download portable
Without this toolbox, your TIA Portal V16 will see the 840D sl as an unknown device. With it, the NCU becomes a fully programmable component. What I learned boiled down to trade-offs: Do