Looking for any Dmx512 Universe Input devices?

Dmx512 Universe Input devices?
I'm currently going to Arc-Net . I have One Universe Dmx512 Input? Can I use I/O Port #3 as a Input?

What input Device can be used?
I looked for Hours & have found nothing (I must be using the Wrong Key Words?)
Looking for Trigger input device ? Mini Controllers ?
Please list anything? Idea? that can be used thought the Art-Net input,,,, Wiring Diagram anything , I need to get as many Options As possible
I guessing I can only hook up one device? MIDI Keyboards?

Other Ideas

1) Can I get a Converter - To use a Usb Mini Controller & run it throw the DMX512 Input?

Thanks

Steve

Thanks JPK

Yes it does

If it have a DMX-In, you can use every Device, that can generate a DMX signal (DMX controller, another interface device,...)
Can you list some device that can do this? I can't find any!!!

Art-Net-Node
http://www.ebay.com/itm/3219016871…K%3AMEBIDX%3AIT
Manual English
http://www.electronpoint.com/artnet6_00/an6_00.pdf

Other
If I find a Device that works. looks like I would hook it up to Universe #2
does the Inputs use the same address has the Output? so you either have 512 inputs & 512 Outputs or 512 total Inputs/outputs?
or if dmxcontrol allows me to hook it up to port #3 than 512 Inputs?

Thanks

Again