Thanks Lindsay.
To follow up on this, I had to reflash the eDidio DMX controller with their native firmware, as the unit I had was flavored for Control4, which left TCP port 23 disabled, as well as other things.
Once back to non-TLS, and using port 23 with a TCP client, I was able to connect my MC3 to the eDidio S10 and send the commands in the following format:
?
\xCD\x00\x0e\xaa\x01\x0b\x0A\x09\x08\x0C\x10\xff\x01\x18\x02\x20\x01
?
No line feed or carriage return.? This is a string to start "Sequence 2", as created in the Spektra app for eDidio DMX controller.
