Johannus Vivaldi 270 User Manual page 49

Pushbutton values
When a piston is pressed, a sys ex code is transmitted with the value of the piston
that is pressed (for example PP = 00 P = 01) through the MIDI MOD. output.
These sys ex codes are only important when the Johannus sound module CSM 128
is connected to your instrument.
Other MIDI codes (transmitted)
Press the 0 piston to transmit the sys ex code, 'all stops off' and all volume
settings through the MIDI SEQ. output.
User Manual Vivaldi 270/370 49