I had similar problem 4 years ago… (http://forum.inductiveautomation.com/t/tcp-driver-connect-to-barcode-scanner/6965 and http://forum.inductiveautomation.com/t/tcp-driver-active-passive-connections/6987)
After four years nothing has changed… 
Go here and vote…
http://ideas.inductiveautomation.com/forums/255378-ignition-features-and-ideas/suggestions/31838332-tcp-driver-active-or-passive-connection