How do you plan to connect your computer to the controller? You can either go directly or go through a hub/switch.
If you go directly from computer to controller you will need to manually set the IP of your ethernet device on your computer and make sure it works with the controller.
If you go through a switch that’s connected to your broader network, let’s say the one that provides you internet access, then you’ll need to configure the controller’s IP to work within the subnet of the broader network.
Another option is to use LightBurn Bridge. This will allow your controller to work wirelessly on an existing wifi network.