You can use the data entry slider to send a number of different MIDI messages. Use the following procedure to assign the data entry slider on the A-33:
1. Press PATCH so it is not lit.
2. Press the KEYBOARD MODE UPPER of LOWER button to choose the appropriate zone.
3. Press the DATA ENT ASS button, so it is lit.
4. Enter the desired MIDI Controller or parameter value using the numbers on the bottom left numbered 1 thru 0. (i.e. 1 then 5 for 15.)
5. Press ENTER.
Here are some popular controller numbers:
1 - Modulation
2 - Breath Controller
5 - Portamento Time
7 - Volume
10 - Pan
11 - Expression
91 - Reverb Level
93 - Chorus Depth
Note: You will need to make sure that the MIDI module you are controlling will recognize the controller you are sending from the A-33.