the V256 can receive control messages from a MIDI controller or other 
MIDI device so that every function in the V256 is MIDI controllable. 
The default setting for the V256 from the factory is OMNI OFF, set to
channel 16.

PATCH CHANGE
Program numbers 1 to 9 (1= VOX ROBO 1, 9 = REFLEX-TUNE) select V256 
modes with presets loaded.
Program numbers 11 to 19 (11 = VOX ROBO 1, 9 = REFLEX-TUNE) select 
V256 modes without presets loaded.

CONTROL CHANGE
1   Modulation Depth: 0-127
7   Internal Synth Volume: 0-127
14  Maximum Pitch Bend in Semitones: 0-12
15  Fine Tuning: units of 1.5625 cents. 0=-100 cents, 64=0 cents, 
    127=98.44 cents
20  BLEND Knob: 0=CCW 127=CW
21  BANDS Knob: 0=CCW 127=CW
22  TREBLE Knob: 0=CCW 127=CW
23  GENDER Knob: 0=CCW 127=CW
24  PITCH Knob: 0=CCW 127=CW
25  INST. Out Jack Blend: 0=100% INST.; 127=100% Effect.
26  LFO rate: 0=stopped to 127= Maximum Modulation Rate
27  Effect On/Bypass: On = 127; Bypass= 0
28  MIC BYPASS/Freeze FSW: 127 = pressed, 0 = released
29  PRESET FSW: 127 = pressed, 0 = released
30  ENCODER PRESS: 127 = pressed, 0 = released
64  Internal Synth Sustain: 0-127
124 Omni off (Only when received on default channel = 16) send “0”
125 Omni on (Only when received on default channel = 16) send “0”