If you want to connect CODESYS with Visual Components the easiest way is to use a OPC UA connection. This way you can easily connect PLC variables to properties and signals in VC.
There is a video tutorial on how to accomplish this in our Academy: https://academy.visualcomponents.com/lessons/connect-a-remote-opc-ua-server/
Note that many components in VC rely heavily on scripting, and if you start overriding some properties from PLC side you might sometimes get unexpected results. What I mean by this is that sometimes you need to add some custom signals or properties to the components to accomplish the functionality that you are looking for.