I cant see MIDI output on the helix remote back, just a RJ45 socket. http://www.thomann.de/de/line6_helix_control.htm
I suspect they will not use MIDI protocol on there. It would need some kind of converter to use it as a MIDI remote. With their previous remotes, like shortboard etc. they did not provide a converter. (other than the rack unit , which is 1,5k in this case
Line 6 has implemented midi over USB in the MkII pedals; since the Helix pedal has USB, I'd expect it to have it as well. There are a few class compliant midi over USB to 5 pin midi converters out there, so using it with straight midi might not be a problem.