Yep, the various standards bodies would be most unhappy if you were to republish their standards freely. This doesnt just apply the the (now current) DMX512-A standard, but any standard, for example, ANSI, ETSI or BS.
I iknow that some of the standards bodies have "special arrangments" for acedemic use, but such usage would not be permitted on the open internet, it used to be done on CD-ROM in the library, but I'm sure there's an intranet-possible approach.
Talk to the standards bodies, no matter how painful