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MMC (MIDI Machine Control) 
Some recording hardware and DAWs can be controlled remotely via MMC (MIDI Machine 
Control) messages. MMC is a transport control protocol. 
The buttons must be in MIDI Mode to do this (see Modes > MIDI Mode). 
 
To assign a MMC message to a button: 
1.  Press Edit to enter Edit Mode. The Edit button will light up. 
2.  Press the desired button. The button’s number will appear in the display. 
3.  Press the Ctrl Assign key. The display will show ASGN for 1 second and then show the 
button’s number (B__) and a number for the type of message it sends. 
4.  Use the numeric keys (0–9) to enter 149 (if the display does not already show it). This sets 
the button to send MMC messages. 
5.  Press the Chan Assign key. The display will show DEV ID for 1 second and then show 
the button’s number (B__) and the current MIDI channel it uses. 
6.  Use the numeric keys (0–9) or Preset Down/Up () buttons to enter 127. 
7.  Press the Data 2 key. The display will show DATA2 for 1 second and then show the 
button’s number (B__) and the number for its MMC message (if any): 
001 
Stop  
008
Record Pause 
002 
Play  
009
Pause 
003 
Deferred Play   
010
Eject 
004 
Fast-Forward  
011
Chase 
005 
Rewind  
012
MMC Reset 
006 
Record Strobe (Punch In)      
007 
Record Exit (Punch Out)       
8.  Use the numeric keys (0–9) or Preset Down/Up () buttons to enter the number of the 
desired MMC message. 
9.  Press the Enter key. The button is now set to send the assigned MMC message, and you 
will exit Edit Mode. 
To cancel your changes instead, press Edit. You will exit Edit Mode without saving anything. 
Remember to store the preset if you want to save your changes in that preset.