Osc: how to register a method?


I’m using a node-red dashboard to control casparCG and it works well. Now I want to receive the status messages by osc-protocol. Therefor I use an osc-node to listen at port 5253 for osc-messages. It works, but I receive every osc-message not the only needed ones. What I want now is to register some paths to only receive these. I could also send osc-messages by another osc-node. But I don’t know the structure of the osc-path for registering a method and the port where to send at.

Can somebody help me? Perhaps I have some wrong understanding of how osc communication works.