Two Way MIDI is a module that enables Modul8 to send a midi signal back to your midi device. Two Way MIDI will keep your midi device updated with the values from Modul8 so that you avoid annoying ‘jumps’ when the current setting of your device doesn’t match the values of Modul8.
Whenever you touch a control in Modul8 or switch to another layer Two way MIDI will update your MIDI device with the current values.
This module is only relevant if you have a midi device that is designed to receive MIDI as well as send MIDI. Typically these devices will have motorized faders or 360 degree (endless) knobs with LED displays. Examples of such are Novation MIDI controllers and Behringer BCF2000.
Read more here:
http://www.udart.dk/2010/11/25/two-way- ... or-modul8/