I agree viking. Thats why I was asking.
What I got out of it is that you can connect a ethernet cable to the standard LAN plug on the PC then run it to a RJ45-DB25 that connects to the CNC. Thats kind of why I was trying to understand why someone would use the RJ45-DB9 or the USB on the PC if they can just plug in the ethernet cable. Pinman said that you just have to make sure that you assign the COM1 to your LAN plug .
I have always used the 9pin at my PC but if I don't have to that would be great.
Stevo