Kawai MP7SE Owner's Manual page 138

MIDI Implementation
1.2 Channel Mode Message
All Sound OFF
Status
BnH
n=MIDI channel number
Reset All Controller
Status
BnH
n=MIDI channel number
All Note Off
Status
BnH
n=MIDI channel number
1.3 System Realtime Message
Status
FEH
138
2nd Byte 3rd Byte
78H 00H
:0H-fH(ch.1 ~ ch.16)
2nd Byte 3rd Byte
79H 00H
:0H-fH(ch.1 ~ ch.16)
2nd Byte 3rd Byte
7bH 00H
:0H-fH(ch.1 ~ ch.16)
Active sensing