Parts of the DMX-512
protocol were based on (or lifted from) the
Colortran CMX system, including the use of 5-pin
XLR connectors and RS-485 signal levels. The data rates are different (250K bits per second for DMX-512, 156K for
CMX). I don't know all the details of
CMX, though, and hadn't planned on doing my own converter for it.
Artistic License, a British company, includes
CMX as one of the input choices on their
protocol converter (also as one of the output choices - they're very egalitarian). I found it with a quick Google on "
CMX converter." Also found that
CMX is the file extension for a graphics file format and had to go through a couple pages of file-format converters to find the Artistic License
unit. There may be others.
John