As best I can remember, the original Dataflash is NOT capable of listening to
DMX, only the Lightwave Research "Dataflash Controller"--NOT the same as an AF1000 controller.
Attached is the user manual dated August, 1989. <File too big for control booth.> Here's a link to it on my site, it's 3.4Mb.
http://www.derekleffew.com/DataFlashdf.pdf
Hope this helps, but I'm afraid it's not the answer you wanted.