It wouldn't really be E1.31, though. I think... It would be the Renard protocol communicated over one of the 3 DMX1/2/3 Ethernet/serial connections.
So what I ended up TRYING "Create New DMX" in Layout. See attachment DMXInXLights.png. Then I went to the F48 controller visualise tab. See attachment F48SerialPort.png. I am not sure if I am doing this right.
Then the next challange is how I am actually using this in Sequencer. I see my DmxDeer1 but then what affect do I add? There is a DMX effect but I don't quite understand how to use it and I didn't find anything helpful in the documentation (maybe I am looking at the wrong section).