Controlling KNX lighting from a third-party touchscreen via HTTP, while preserving KN

[PedroPinto]

If they are on the same network then no problem. LM will talk to the routers over KNX multicast. You will need to add objects to filter table for LM to see them and then LM will convert them to bacnet. 
https://kb.logicmachine.net/integration/bacnet-server/

Thank you for the help, so every ip router from the network has to have the same multicast address that we set up on KNX connection mode IP Routing correct?