Roland A-49 - MIDI Keyboard Controller (White) - Manual (Page 31)

Changing the A-49 Settings
31
Assigning Aftertouch
Operate either
Assigning a Control Change Number (CC#)
[S1] [S2] buttons
For details on this value, refer to p. 8.
Value 0–127
0–9
Press either
Latched
Momentary
Button [S1][S2] buttons
[+] button
The button will alternately transmit ON (127) and OFF (0) each time you press it (Latched
operation)
[–] button
The button will transmit ON (127) when you press it, and OFF (0) when you release it
(Momentary operation)