NeoLoad Results API without Opening the NeoLoad application

I am using NeoLoad Results API, where I can generate report or read report into xml, or pdf... but here one problem is that I have to open NeoLoad tool/application always to access the 7400 default port. So if I close the NeoLoad tool, then the API doesn't work. the port is going offline. so how I can access this API when my NeoLoad tool is closed. what are the steps or config i need to set 7400 port and access Results API.

please explain.