Alright guys, I think I finally get it with the wiring specs of RS-232 vs RS-485 being different. So I will use the RS-232 port of the SLC configured as DH-485, just like Mickey sugested and I will use the RJ-45 for programming wich is fine since I have a PCMK card with the RJ-45 adapter here at work. Not having that would have meant buying the NET-AIC. Thanks again guys for the wealth of information! You all rock!