Smart Touch was the predecessor of QuickPanel, if I am not mistaken. You use QuickPanel Software, TCP or whatever you can get your hands on. When I last uploaded and developed with a smart Touch, it was in 2000. I used TC QuickDesigner v3.4. Since then, TC sold to GE-Fanuc. Alot of changes since then, but the panel is pretty much the same, as is the cable.
The cable number varies according to the time.
The cable that you can buy through GE is P/N GPW-CB02